Split sample app

- spring-shell-sample-commands and spring-shell-sample-e2e
- Needed changes in e2e tests and workflow
- Fixes #754

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/SpringShellSample.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2017-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples;
+
+import org.jline.utils.AttributedString;
+import org.jline.utils.AttributedStyle;
+
+import org.springframework.boot.Banner.Mode;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.annotation.CommandScan;
+import org.springframework.shell.jline.PromptProvider;
+
+/**
+ * Main entry point for the application.
+ *
+ * <p>Creates the application context and start the REPL.</p>
+ *
+ * @author Eric Bottard
+ * @author Janne Valkealahti
+ */
+@SpringBootApplication
+@CommandScan
+public class SpringShellSample {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication application = new SpringApplication(SpringShellSample.class);
+		application.setBannerMode(Mode.OFF);
+		application.run(args);
+		// TODO: follow up with boot why spring.main.banner-mode=off doesn't work
+		// SpringApplication.run(SpringShellSample.class, args);
+	}
+
+	@Bean
+	public PromptProvider myPromptProvider() {
+		return () -> new AttributedString("my-shell:>", AttributedStyle.DEFAULT.foreground(AttributedStyle.YELLOW));
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/AliasCommands.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.stereotype.Component;
+
+public class AliasCommands {
+
+	@Command(command = BaseE2ECommands.ANNO, alias = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class AliasCommandsAnnotation extends BaseE2ECommands {
+
+		@Command(command = "alias-1", alias = "aliasfor-1")
+		public String testAlias1Annotation() {
+			return "Hello from alias command";
+		}
+	}
+
+	@Component
+	public static class AliasCommandsRegistration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testAlias1Registration(CommandRegistration.BuilderSupplier builder) {
+			return builder.get()
+				.command(REG, "alias-1")
+				.group(GROUP)
+				.withAlias()
+					.command(REG, "aliasfor-1")
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						return "Hello from alias command";
+					})
+					.and()
+				.build();
+		}
+	}
+
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/ArityCommands.java

@@ -0,0 +1,174 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import java.util.Arrays;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.CommandRegistration.OptionArity;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class ArityCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "arity-boolean-default-true", group = GROUP)
+		public String testArityBooleanDefaultTrueLegacyAnnotation(
+			@ShellOption(value = "--overwrite", arity = 1, defaultValue = "true") Boolean overwrite
+		) {
+			return "Hello " + overwrite;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "arity-string-array", group = GROUP)
+		public String testArityStringArrayLegacyAnnotation(
+			@ShellOption(value = "--arg1", arity = 3) String[] arg1
+		) {
+			return "Hello " + Arrays.asList(arg1);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "arity-float-array", group = GROUP)
+		public String testArityFloatArrayLegacyAnnotation(
+			@ShellOption(value = "--arg1", arity = 3) float[] arg1
+		) {
+			return "Hello " + stringOfFloats(arg1);
+		}
+
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "arity-boolean-default-true")
+		public String testArityBooleanDefaultTrueAnnotation(
+				@Option(longNames = "overwrite", defaultValue = "true", arity = OptionArity.ZERO_OR_ONE)
+				Boolean overwrite
+		) {
+				return "Hello " + overwrite;
+		}
+
+		@Command(command = "arity-string-array")
+		public String testArityStringArrayAnnotation(
+				@Option(longNames = "arg1", defaultValue = "true", arityMax = 3)
+				String[] arg1
+		) {
+				return "Hello " + Arrays.asList(arg1);
+		}
+
+		@Command(command = "arity-float-array")
+		public String testArityFloatArrayAnnotation(
+				@Option(longNames = "arg1", defaultValue = "true", arity = OptionArity.ZERO_OR_MORE)
+				float[] arg1
+		) {
+				return "Hello " + stringOfFloats(arg1);
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testArityBooleanDefaultTrueRegistration() {
+			return getBuilder()
+				.command(REG, "arity-boolean-default-true")
+				.group(GROUP)
+				.withOption()
+					.longNames("overwrite")
+					.type(Boolean.class)
+					.defaultValue("true")
+					.arity(OptionArity.ZERO_OR_ONE)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						Boolean overwrite = ctx.getOptionValue("overwrite");
+						return "Hello " + overwrite;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testArityStringArrayRegistration() {
+			return getBuilder()
+				.command(REG, "arity-string-array")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.required()
+					.type(String[].class)
+					.arity(0, 3)
+					.position(0)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String[] arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + Arrays.asList(arg1);
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testArityFloatArrayRegistration() {
+			return getBuilder()
+				.command(REG, "arity-float-array")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(float[].class)
+					.arity(0, 3)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						float[] arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + stringOfFloats(arg1);
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testArityErrorsRegistration() {
+			return getBuilder()
+				.command(REG, "arity-errors")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(String[].class)
+					.required()
+					.arity(1, 2)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String[] arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + Arrays.asList(arg1);
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/AvailabilityCommands.java

@@ -0,0 +1,123 @@
+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.Availability;
+import org.springframework.shell.AvailabilityProvider;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.CommandAvailability;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellMethodAvailability;
+import org.springframework.stereotype.Component;
+
+public class AvailabilityCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		// find from <methodName>Availability
+		@ShellMethod(key = LEGACY_ANNO + "availability-1", group = GROUP)
+		public String testAvailability1LegacyAnnotation(
+		) {
+			return "Hello";
+		}
+
+		public Availability testAvailability1LegacyAnnotationAvailability() {
+			return Availability.unavailable("not available 1");
+		}
+
+		// find from method name in @ShellMethodAvailability
+		@ShellMethod(key = LEGACY_ANNO + "availability-2", group = GROUP)
+		@ShellMethodAvailability("testAvailability2LegacyAnnotationAvailability2")
+		public String testAvailability2LegacyAnnotation(
+		) {
+			return "Hello";
+		}
+
+		public Availability testAvailability2LegacyAnnotationAvailability2() {
+			return Availability.unavailable("not available 2");
+		}
+
+		// find backwards from @ShellMethodAvailability command name
+		@ShellMethod(key = LEGACY_ANNO + "availability-3", group = GROUP)
+		public String testAvailability3LegacyAnnotation(
+		) {
+			return "Hello";
+		}
+
+		@ShellMethodAvailability("e2e anno availability-3")
+		public Availability testAvailability3LegacyAnnotationAvailability3() {
+			return Availability.unavailable("not available 3");
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "availability-1")
+		@CommandAvailability(provider = "testAvailability1AnnotationAvailability")
+		public String testAvailability1Annotation(
+		) {
+			return "Hello";
+		}
+
+		@Bean
+		public AvailabilityProvider testAvailability1AnnotationAvailability() {
+			return () -> Availability.unavailable("not available");
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testAvailability1Registration() {
+			return getBuilder()
+				.command(REG, "availability-1")
+				.group(GROUP)
+				.availability(() -> {
+					return Availability.unavailable("not available");
+				})
+				.withTarget()
+					.function(ctx -> {
+						return "Hello";
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testAvailability2Registration() {
+			return getBuilder()
+				.command(REG, "availability-2")
+				.group(GROUP)
+				.availability(testAvailability2AnnotationAvailability())
+				.withTarget()
+					.function(ctx -> {
+						return "Hello";
+					})
+					.and()
+				.build();
+		}
+
+		AvailabilityProvider testAvailability2AnnotationAvailability() {
+			return () -> Availability.unavailable("not available");
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/BaseE2ECommands.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.util.StringUtils;
+
+/**
+ * Base class for all e2e commands.
+ *
+ * @author Janne Valkealahti
+ */
+abstract class BaseE2ECommands {
+
+	static final String GROUP = "E2E Commands";
+	static final String REG = "e2e reg";
+	static final String LEGACY_ANNO = "e2e anno ";
+	// TODO: anno should become anno-legacy and annox to anno
+	static final String ANNO = "e2e annox ";
+
+	@Autowired
+	private CommandRegistration.BuilderSupplier builder;
+
+	CommandRegistration.Builder getBuilder() {
+		return builder.get();
+	}
+
+	static String stringOfStrings(String[] values) {
+		return String.format("[%s]", StringUtils.arrayToCommaDelimitedString(values));
+	}
+
+	static String stringOfInts(int[] values) {
+		String joined = IntStream.range(0, values.length)
+			.mapToLong(i -> values[i])
+			.boxed()
+			.map(d -> d.toString())
+			.collect(Collectors.joining(","));
+		return String.format("[%s]", joined);
+	}
+
+	static String stringOfFloats(float[] values) {
+		String joined = IntStream.range(0, values.length)
+			.mapToDouble(i -> values[i])
+			.boxed()
+			.map(d -> d.toString())
+			.collect(Collectors.joining(","));
+		return String.format("[%s]", joined);
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/DefaultValueCommands.java

@@ -0,0 +1,182 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+@ShellComponent
+public class DefaultValueCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "default-value", group = GROUP)
+		public String testDefaultValue(
+			@ShellOption(defaultValue = "hi") String arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "default-value-boolean1", group = GROUP)
+		public String testDefaultValueBoolean1(
+			@ShellOption(defaultValue = "false") boolean arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "default-value-boolean2", group = GROUP)
+		public String testDefaultValueBoolean2(
+			@ShellOption(defaultValue = "true") boolean arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "default-value-boolean3", group = GROUP)
+		public String testDefaultValueBoolean3(
+			@ShellOption boolean arg1
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "default-value")
+		public String testDefaultValueAnnotation(
+				@Option(longNames = "arg1", defaultValue = "hi")
+				String arg1
+		) {
+				return "Hello " + arg1;
+		}
+
+		@Command(command = "default-value-boolean1")
+		public String testDefaultValueBoolean1Annotation(
+				@Option(longNames = "arg1", defaultValue = "false")
+				boolean arg1
+		) {
+				return "Hello " + arg1;
+		}
+
+		@Command(command = "default-value-boolean2")
+		public String testDefaultValueBoolean2Annotation(
+				@Option(longNames = "arg1", defaultValue = "true")
+				boolean arg1
+		) {
+				return "Hello " + arg1;
+		}
+
+		@Command(command = "default-value-boolean3")
+		public String testDefaultValueBoolean3Annotation(
+				@Option(longNames = "arg1")
+				boolean arg1
+		) {
+				return "Hello " + arg1;
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testDefaultValueRegistration() {
+			return getBuilder()
+				.command(REG, "default-value")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.defaultValue("hi")
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testDefaultValueBoolean1Registration() {
+			return getBuilder()
+				.command(REG, "default-value-boolean1")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.defaultValue("false")
+					.type(boolean.class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						boolean arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testDefaultValueBoolean2Registration() {
+			return getBuilder()
+				.command(REG, "default-value-boolean2")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.defaultValue("true")
+					.type(boolean.class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						boolean arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testDefaultValueBoolean3Registration() {
+			return getBuilder()
+				.command(REG, "default-value-boolean3")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.required(false)
+					.type(boolean.class)
+					.defaultValue("false")
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						boolean arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/ErrorHandlingCommands.java

@@ -0,0 +1,179 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+import org.jline.terminal.Terminal;
+
+import org.springframework.boot.ExitCodeGenerator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandExceptionResolver;
+import org.springframework.shell.command.CommandHandlingResult;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.ExceptionResolver;
+import org.springframework.shell.command.annotation.ExitCode;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class ErrorHandlingCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "error-handling", group = GROUP)
+		String testErrorHandling(String arg1) throws IOException {
+			if ("throw1".equals(arg1)) {
+				throw new CustomException1();
+			}
+			if ("throw2".equals(arg1)) {
+				throw new CustomException2(11);
+			}
+			if ("throw3".equals(arg1)) {
+				throw new RuntimeException();
+			}
+			if ("throw4".equals(arg1)) {
+				throw new IllegalArgumentException();
+			}
+			if ("throw5".equals(arg1)) {
+				throw new CustomException3();
+			}
+			if ("throw6".equals(arg1)) {
+				throw new CustomException4();
+			}
+			return "Hello " + arg1;
+		}
+
+		@ExceptionResolver({ CustomException1.class })
+		CommandHandlingResult errorHandler1(CustomException1 e) {
+			return CommandHandlingResult.of("Hi, handled custom exception\n", 42);
+		}
+
+		@ExceptionResolver
+		CommandHandlingResult errorHandler2(IllegalArgumentException e) {
+			return CommandHandlingResult.of("Hi, handled illegal exception\n", 42);
+		}
+
+		@ExceptionResolver({ CustomException3.class })
+		@ExitCode(3)
+		String errorHandler3(CustomException3 e) {
+			return "Hi, handled custom exception 3\n";
+		}
+
+		@ExceptionResolver({ CustomException4.class })
+		@ExitCode(code = 4)
+		void errorHandler3(CustomException4 e, Terminal terminal) {
+			PrintWriter writer = terminal.writer();
+			writer.println(String.format("Hi, handled custom exception %s", e));
+			writer.flush();
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		CommandRegistration testErrorHandlingRegistration() {
+			return getBuilder()
+				.command(REG, "error-handling")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.required()
+					.and()
+				.withErrorHandling()
+					.resolver(new CustomExceptionResolver())
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						if ("throw1".equals(arg1)) {
+							throw new CustomException1();
+						}
+						if ("throw2".equals(arg1)) {
+							throw new CustomException2(11);
+						}
+						if ("throw3".equals(arg1)) {
+							throw new RuntimeException();
+						}
+						if ("throw4".equals(arg1)) {
+							throw new IllegalArgumentException();
+						}
+						if ("throw5".equals(arg1)) {
+							throw new CustomException3();
+						}
+						if ("throw6".equals(arg1)) {
+							throw new CustomException4();
+						}
+
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+
+	private static class CustomException1 extends RuntimeException {
+	}
+
+	private static class CustomException2 extends RuntimeException implements ExitCodeGenerator {
+
+		private int code;
+
+		CustomException2(int code) {
+			this.code = code;
+		}
+
+		@Override
+		public int getExitCode() {
+			return code;
+		}
+	}
+
+	private static class CustomException3 extends RuntimeException {
+	}
+
+	private static class CustomException4 extends RuntimeException {
+	}
+
+	private static class CustomExceptionResolver implements CommandExceptionResolver {
+
+		@Override
+		public CommandHandlingResult resolve(Exception e) {
+			if (e instanceof CustomException1) {
+				return CommandHandlingResult.of("Hi, handled custom exception\n", 42);
+			}
+			if (e instanceof CustomException3) {
+				return CommandHandlingResult.of("Hi, handled custom exception 3\n", 3);
+			}
+			if (e instanceof CustomException4) {
+				String msg = String.format("Hi, handled custom exception %s\n", e);
+				return CommandHandlingResult.of(msg, 42);
+			}
+			if (e instanceof IllegalArgumentException) {
+				return CommandHandlingResult.of("Hi, handled illegal exception\n", 42);
+			}
+			return null;
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/ExitCodeCommands.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class ExitCodeCommands {
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+		@Bean
+		public CommandRegistration testExitCodeRegistration() {
+			return getBuilder()
+				.command(REG, "exit-code")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.required()
+					.and()
+				.withTarget()
+					.consumer(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						throw new MyException(arg1);
+					})
+					.and()
+				.withExitCode()
+					.map(MyException.class, 3)
+					.map(t -> {
+						String msg = t.getMessage();
+						if (msg != null && msg.contains("ok")) {
+							return 0;
+						}
+						else if (msg != null && msg.contains("fun")) {
+							return 4;
+						}
+						return 0;
+					})
+					.and()
+				.build();
+		}
+	}
+
+	static class MyException extends RuntimeException {
+
+		MyException(String msg) {
+			super(msg);
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/HelpOptionCommands.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+@ShellComponent
+public class HelpOptionCommands extends BaseE2ECommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "help-option-default", group = GROUP)
+		public String testHelpOptionDefault(
+			@ShellOption(defaultValue = "hi") String arg1
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testHelpOptionDefaultRegistration() {
+			return getBuilder()
+				.command(REG, "help-option-default")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.defaultValue("hi")
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testHelpOptionExistsRegistration() {
+			return getBuilder()
+				.command(REG, "help-option-exists")
+				.group(GROUP)
+				.withOption()
+					.longNames("help")
+					.defaultValue("hi")
+					.and()
+				.withHelpOptions()
+					.longNames("myhelp")
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("help");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/HiddenCommands.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.stereotype.Component;
+
+public class HiddenCommands {
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "hidden-1", hidden = true)
+		public String testHidden1Annotation(
+		) {
+				return "Hello from hidden command";
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testHidden1Registration() {
+			return getBuilder()
+				.command(REG, "hidden-1")
+				.group(GROUP)
+				.hidden()
+				.withTarget()
+					.function(ctx -> {
+						return "Hello from hidden command";
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/InteractiveCompletionCommands.java

@@ -0,0 +1,146 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.CompletionContext;
+import org.springframework.shell.CompletionProposal;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.command.annotation.OptionValues;
+import org.springframework.shell.completion.CompletionProvider;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.shell.standard.ValueProvider;
+import org.springframework.stereotype.Component;
+
+public class InteractiveCompletionCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "interactive-completion-1", group = GROUP)
+		public String testInteractiveCompletion1(
+			@ShellOption(valueProvider = Test1ValuesProvider.class) String arg1,
+			@ShellOption(valueProvider = Test2ValuesProvider.class) String arg2
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Bean
+		Test1ValuesProvider test1ValuesProvider() {
+			return new Test1ValuesProvider();
+		}
+
+		@Bean
+		Test2ValuesProvider test2ValuesProvider() {
+			return new Test2ValuesProvider();
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "interactive-completion-1")
+		public String testRequiredValueAnnotation(
+				@Option(longNames = "arg1", required = true) @OptionValues(provider = "test1CompletionProvider") String arg1,
+				@Option(longNames = "arg2", required = true) @OptionValues(provider = "test2CompletionProvider") String arg2
+		) {
+				return "Hello " + arg1;
+		}
+
+		@Bean
+		CompletionProvider test1CompletionProvider() {
+			return ctx -> {
+				Test1ValuesProvider test1ValuesProvider = new Test1ValuesProvider();
+				return test1ValuesProvider.complete(ctx);
+			};
+		}
+
+		@Bean
+		CompletionProvider test2CompletionProvider() {
+			return ctx -> {
+				Test2ValuesProvider test2ValuesProvider = new Test2ValuesProvider();
+				return test2ValuesProvider.complete(ctx);
+			};
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		CommandRegistration testInteractiveCompletion1Registration() {
+			Test1ValuesProvider test1ValuesProvider = new Test1ValuesProvider();
+			Test2ValuesProvider test2ValuesProvider = new Test2ValuesProvider();
+			return getBuilder()
+				.command(REG, "interactive-completion-1")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.completion(ctx -> test1ValuesProvider.complete(ctx))
+					.and()
+				.withOption()
+					.longNames("arg2")
+					.completion(ctx -> test2ValuesProvider.complete(ctx))
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+
+	static class Test1ValuesProvider implements ValueProvider {
+
+		private final static String[] VALUES = new String[] {
+			"values1Complete1",
+			"values1Complete2"
+		};
+
+		@Override
+		public List<CompletionProposal> complete(CompletionContext completionContext) {
+			return Arrays.stream(VALUES)
+				.map(CompletionProposal::new)
+				.collect(Collectors.toList());
+		}
+	}
+
+	static class Test2ValuesProvider implements ValueProvider {
+
+		private final static String[] VALUES = new String[] {
+			"values2Complete1",
+			"values2Complete2"
+		};
+
+		@Override
+		public List<CompletionProposal> complete(CompletionContext completionContext) {
+			return Arrays.stream(VALUES)
+				.map(CompletionProposal::new)
+				.collect(Collectors.toList());
+		}
+	}
+
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/OptionConversionCommands.java

@@ -0,0 +1,225 @@
+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.ResolvableType;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+public class OptionConversionCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "option-conversion-integer", group = GROUP)
+		public String optionConversionIntegerAnnotation(
+			@ShellOption Integer arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-conversion-custom", group = GROUP)
+		public String optionConversionCustomAnnotation(
+			@ShellOption MyPojo arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-conversion-customset", group = GROUP)
+		public String optionConversionCustomSetAnnotation(
+			@ShellOption Set<MyPojo> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-conversion-customlist", group = GROUP)
+		public String optionConversionCustomListAnnotation(
+			@ShellOption List<MyPojo> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-conversion-customarray", group = GROUP)
+		public String optionConversionCustomArrayAnnotation(
+			@ShellOption MyPojo[] arg1
+		) {
+			return "Hello " + Arrays.asList(arg1);
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "option-conversion-integer")
+		public String optionConversionIntegerAnnotation(
+			@Option(longNames = "arg1")
+			Integer arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-conversion-custom")
+		public String optionConversionCustomAnnotation(
+			@Option(longNames = "arg1")
+			MyPojo arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-conversion-customset")
+		public String optionConversionCustomSetAnnotation(
+			@Option(longNames = "arg1")
+			Set<MyPojo> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-conversion-customarray")
+		public String optionConversionCustomArrayAnnotation(
+			@Option(longNames = "arg1")
+			MyPojo[] arg1
+		) {
+			return "Hello " + Arrays.asList(arg1);
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration optionConversionIntegerRegistration() {
+			return getBuilder()
+				.command(REG, "option-conversion-integer")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(Integer.class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						Integer arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionConversionCustomRegistration() {
+			return getBuilder()
+				.command(REG, "option-conversion-custom")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(MyPojo.class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						MyPojo arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionConversionCustomSetRegistration() {
+			ResolvableType rtype = ResolvableType.forClassWithGenerics(Set.class, MyPojo.class);
+			return CommandRegistration.builder()
+				.command(REG, "option-conversion-customset")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(rtype)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						Set<MyPojo> arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionConversionCustomArrayRegistration() {
+			return getBuilder()
+				.command(REG, "option-conversion-customarray")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(MyPojo[].class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						MyPojo[] arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + Arrays.asList(arg1);
+					})
+					.and()
+				.build();
+		}
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	public static class CommonConfiguration {
+
+		@Bean
+		public Converter<String, MyPojo> stringToMyPojoConverter() {
+			return new StringToMyPojoConverter();
+		}
+	}
+
+	public static class MyPojo {
+		private String arg;
+
+		public MyPojo(String arg) {
+			this.arg = arg;
+		}
+
+		public String getArg() {
+			return arg;
+		}
+
+		public void setArg(String arg) {
+			this.arg = arg;
+		}
+
+		@Override
+		public String toString() {
+			return "MyPojo [arg=" + arg + "]";
+		}
+	}
+
+	static class StringToMyPojoConverter implements Converter<String, MyPojo> {
+
+		@Override
+		public MyPojo convert(String from) {
+			return new MyPojo(from);
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/OptionNamingCommands.java

@@ -0,0 +1,100 @@
+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+public class OptionNamingCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "option-naming-1", group = GROUP)
+		public String testOptionNaming1Annotation(
+			@ShellOption("from_snake") String snake,
+			@ShellOption("fromCamel") String camel,
+			@ShellOption("from-kebab") String kebab,
+			@ShellOption("FromPascal") String pascal
+		) {
+			return String.format("snake='%s' camel='%s' kebab='%s' pascal='%s' ", snake, camel, kebab, pascal);
+		}
+
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "option-naming-1")
+		public String testOptionNaming1Annotation(
+			@Option(longNames = "from_snake") String snake,
+			@Option(longNames = "fromCamel") String camel,
+			@Option(longNames = "from-kebab") String kebab,
+			@Option(longNames = "FromPascal") String pascal
+		) {
+			return String.format("snake='%s' camel='%s' kebab='%s' pascal='%s' ", snake, camel, kebab, pascal);
+		}
+
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testOptionNaming1Registration() {
+			return getBuilder()
+				.command(REG, "option-naming-1")
+				.group(GROUP)
+				.withOption()
+					.longNames("from_snake")
+					.required()
+					.and()
+				.withOption()
+					.longNames("fromCamel")
+					.required()
+					.and()
+				.withOption()
+					.longNames("from-kebab")
+					.required()
+					.and()
+				.withOption()
+					.longNames("FromPascal")
+					.required()
+					.and()
+				.withOption()
+					.longNames("arg1")
+					.nameModifier(name -> "x" + name)
+					// .required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String snake = ctx.getOptionValue("from_snake");
+						String camel = ctx.getOptionValue("fromCamel");
+						String kebab = ctx.getOptionValue("from-kebab");
+						String pascal = ctx.getOptionValue("FromPascal");
+						return String.format("snake='%s' camel='%s' kebab='%s' pascal='%s' ", snake, camel, kebab, pascal);
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/OptionTypeCommands.java

@@ -0,0 +1,434 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class OptionTypeCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-string", group = GROUP)
+		public String optionTypeStringAnnotation(
+			@ShellOption(help = "Desc arg1") String arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-boolean", group = GROUP)
+		public String optionTypeBooleanAnnotation(
+			@ShellOption() boolean arg1,
+			@ShellOption(defaultValue = "true") boolean arg2,
+			@ShellOption(defaultValue = "false") boolean arg3,
+			@ShellOption() Boolean arg4,
+			@ShellOption(defaultValue = "true") Boolean arg5,
+			@ShellOption(defaultValue = "false") Boolean arg6,
+			boolean arg7
+		) {
+			return String.format("Hello arg1=%s arg2=%s arg3=%s arg4=%s arg5=%s arg6=%s arg7=%s", arg1, arg2, arg3,
+					arg4, arg5, arg6, arg7);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-integer", group = GROUP)
+		public String optionTypeIntegerAnnotation(
+			@ShellOption int arg1,
+			@ShellOption Integer arg2
+		) {
+			return String.format("Hello '%s' '%s'", arg1, arg2);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-enum", group = GROUP)
+		public String optionTypeEnumAnnotation(
+			@ShellOption(help = "Desc arg1") OptionTypeEnum arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-string-array", group = GROUP)
+		public String optionTypeStringArrayAnnotation(
+			@ShellOption(help = "Desc arg1") String[] arg1
+		) {
+			return "Hello " + stringOfStrings(arg1);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-int-array", group = GROUP)
+		public String optionTypeIntArrayAnnotation(
+			@ShellOption(help = "Desc arg1") int[] arg1
+		) {
+			return "Hello " + stringOfInts(arg1);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-string-list", group = GROUP)
+		public String optionTypeStringListAnnotation(
+			@ShellOption(help = "Desc arg1") List<String> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-string-set", group = GROUP)
+		public String optionTypeStringSetAnnotation(
+			@ShellOption(help = "Desc arg1") Set<String> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "option-type-string-collection", group = GROUP)
+		public String optionTypeStringCollectionAnnotation(
+			@ShellOption(help = "Desc arg1") Collection<String> arg1
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "option-type-string")
+		public String optionTypeStringAnnotation(
+			@Option(longNames = "arg1")
+			String arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-type-boolean")
+		public String optionTypeBooleanAnnotation(
+			@Option(longNames = "arg1") boolean arg1,
+			@Option(longNames = "arg2", defaultValue = "true") boolean arg2,
+			@Option(longNames = "arg3", defaultValue = "false") boolean arg3,
+			@Option(longNames = "arg4") Boolean arg4,
+			@Option(longNames = "arg5", defaultValue = "true") Boolean arg5,
+			@Option(longNames = "arg6", defaultValue = "false") Boolean arg6,
+			boolean arg7
+		) {
+			return String.format("Hello arg1=%s arg2=%s arg3=%s arg4=%s arg5=%s arg6=%s arg7=%s", arg1, arg2, arg3,
+					arg4, arg5, arg6, arg7);
+		}
+
+		@Command(command = "option-type-integer")
+		public String optionTypeIntegerAnnotation(
+			@Option(longNames = "arg1")
+			int arg1,
+			@Option(longNames = "arg2")
+			Integer arg2
+		) {
+			return String.format("Hello '%s' '%s'", arg1, arg2);
+		}
+
+		@Command(command = "option-type-enum")
+		public String optionTypeEnumAnnotation(
+			@Option(longNames = "arg1")
+			OptionTypeEnum arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-type-string-array")
+		public String optionTypeStringArrayAnnotation(
+			@Option(longNames = "arg1")
+			String[] arg1
+		) {
+			return "Hello " + stringOfStrings(arg1);
+		}
+
+		@Command(command = "option-type-int-array")
+		public String optionTypeIntArrayAnnotation(
+			@Option(longNames = "arg1")
+			int[] arg1
+		) {
+			return "Hello " + stringOfInts(arg1);
+		}
+
+		@Command(command = "option-type-string-list")
+		public String optionTypeStringListAnnotation(
+			@Option(longNames = "arg1")
+			List<String> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-type-string-set")
+		public String optionTypeStringSetAnnotation(
+			@Option(longNames = "arg1")
+			Set<String> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+		@Command(command = "option-type-string-collection")
+		public String optionTypeStringCollectionAnnotation(
+			@Option(longNames = "arg1")
+			Collection<String> arg1
+		) {
+			return "Hello " + arg1;
+		}
+
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration optionTypeStringRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-string")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(String.class)
+					.position(0)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeBooleanRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-boolean")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(boolean.class)
+					.and()
+				.withOption()
+					.longNames("arg2")
+					.type(boolean.class)
+					.defaultValue("true")
+					.and()
+				.withOption()
+					.longNames("arg3")
+					.type(boolean.class)
+					.defaultValue("false")
+					.and()
+				.withOption()
+					.longNames("arg4")
+					.type(Boolean.class)
+					.and()
+				.withOption()
+					.longNames("arg5")
+					.type(Boolean.class)
+					.defaultValue("true")
+					.and()
+				.withOption()
+					.longNames("arg6")
+					.type(Boolean.class)
+					.defaultValue("false")
+					.and()
+				.withOption()
+					.longNames("arg7")
+					.type(boolean.class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						boolean arg1 = ctx.hasMappedOption("arg1") ? ctx.getOptionValue("arg1") : false;
+						boolean arg2 = ctx.getOptionValue("arg2");
+						boolean arg3 = ctx.getOptionValue("arg3");
+						Boolean arg4 = ctx.getOptionValue("arg4");
+						Boolean arg5 = ctx.getOptionValue("arg5");
+						Boolean arg6 = ctx.getOptionValue("arg6");
+						boolean arg7 = ctx.hasMappedOption("arg7") ? ctx.getOptionValue("arg7") : false;
+						return String.format("Hello arg1=%s arg2=%s arg3=%s arg4=%s arg5=%s arg6=%s arg7=%s", arg1,
+								arg2, arg3, arg4, arg5, arg6, arg7);
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeIntegerRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-integer")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(int.class)
+					.required()
+					.and()
+				.withOption()
+					.longNames("arg2")
+					.type(Integer.class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						int arg1 = ctx.getOptionValue("arg1");
+						Integer arg2 = ctx.getOptionValue("arg2");
+						return String.format("Hello '%s' '%s'", arg1, arg2);
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeEnumRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-enum")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(OptionTypeEnum.class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						OptionTypeEnum arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeStringArrayRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-string-array")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(String[].class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String[] arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + stringOfStrings(arg1);
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeIntArrayRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-int-array")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(int[].class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						int[] arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + stringOfInts(arg1);
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeStringListRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-string-list")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(List.class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						List<String> arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeStringSetRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-string-set")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(Set.class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						Set<String> arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeStringCollectionRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-string-collection")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(Collection.class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						Collection<String> arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration optionTypeVoidRegistration() {
+			return getBuilder()
+				.command(REG, "option-type-void")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(void.class)
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						return "Hello ";
+					})
+					.and()
+				.build();
+		}
+	}
+
+	public static enum OptionTypeEnum {
+		ONE,TWO,THREE
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/OptionalValueCommands.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class OptionalValueCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "optional-value", group = GROUP)
+		public String testOptionalValue(
+			@ShellOption(defaultValue = ShellOption.NULL) String arg1
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "optional-value")
+		public String testOptionalValueAnnotation(
+				@Option(longNames = "arg1")
+				String arg1
+		) {
+				return "Hello " + arg1;
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testOptionalValueRegistration() {
+			return getBuilder()
+				.command(REG, "optional-value")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/RequiredValueCommands.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class RequiredValueCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "required-value", group = GROUP)
+		public String testRequiredValueAnnotation(
+			@ShellOption(help = "Desc arg1") String arg1
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "required-value")
+		public String testRequiredValueAnnotation(
+				@Option(longNames = "arg1", required = true, description = "Desc arg1")
+				String arg1
+		) {
+				return "Hello " + arg1;
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testRequiredValueRegistration() {
+			return getBuilder()
+				.command(REG, "required-value")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.description("Desc arg1")
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/ShortOptionTypeCommands.java

@@ -0,0 +1,151 @@
+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.command.annotation.Command;
+import org.springframework.shell.command.annotation.Option;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+public class ShortOptionTypeCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "short-option-type-string", group = GROUP)
+		public String shortOptionTypeStringLegacyAnnotation(
+				@ShellOption(value = { "--arg", "-a" }) String arg)		{
+			return String.format("Hi '%s'", arg);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "short-option-type-single-boolean", group = GROUP)
+		public String shortOptionTypeSingleBooleanLegacyAnnotation(
+				@ShellOption(value = "-a") boolean a)
+		{
+			return String.format("Hi '%s'", a);
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "short-option-type-multi-boolean", group = GROUP)
+		public String shortOptionTypeMultiBooleanLegacyAnnotation(
+				@ShellOption(value = "-a") boolean a,
+				@ShellOption(value = "-b") boolean b,
+				@ShellOption(value = "-c") boolean c)
+		{
+			return String.format("Hi a='%s' b='%s' c='%s'", a, b, c);
+		}
+	}
+
+	@Command(command = BaseE2ECommands.ANNO, group = BaseE2ECommands.GROUP)
+	public static class Annotation extends BaseE2ECommands {
+
+		@Command(command = "short-option-type-string")
+		public String shortOptionTypeStringAnnotation(
+				@Option(longNames = "arg", shortNames = 'a', required = true) String arg) {
+			return String.format("Hi '%s'", arg);
+		}
+
+		@Command(command = "short-option-type-single-boolean")
+		public String shortOptionTypeSingleBooleanAnnotation(
+				@Option(shortNames = 'a') boolean a) {
+			return String.format("Hi '%s'", a);
+		}
+
+		@Command(command = "short-option-type-multi-boolean")
+		public String shortOptionTypeMultiBooleanAnnotation(
+				@Option(shortNames = 'a') boolean a,
+				@Option(shortNames = 'b') boolean b,
+				@Option(shortNames = 'c') boolean c) {
+			return String.format("Hi a='%s' b='%s' c='%s'", a, b, c);
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration shortOptionTypeStringRegistration() {
+			return getBuilder()
+				.command(REG, "short-option-type-string")
+				.group(GROUP)
+				.withTarget()
+					.function(ctx -> {
+						String arg = ctx.hasMappedOption("arg") ? ctx.getOptionValue("arg") : null;
+						return String.format("Hi arg='%s'", arg);
+					})
+					.and()
+				.withOption()
+					.longNames("arg")
+					.shortNames('a')
+					.required()
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration shortOptionTypeSingleBooleanRegistration() {
+			return getBuilder()
+				.command(REG, "short-option-type-single-boolean")
+				.group(GROUP)
+				.withTarget()
+					.function(ctx -> {
+						Boolean a = ctx.hasMappedOption("a") ? ctx.getOptionValue("a") : null;
+						return String.format("Hi a='%s'", a);
+					})
+					.and()
+				.withOption()
+					.shortNames('a')
+					.type(boolean.class)
+					.defaultValue("false")
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration shortOptionTypeMultiBooleanRegistration() {
+			return getBuilder()
+				.command(REG, "short-option-type-multi-boolean")
+				.group(GROUP)
+				.withTarget()
+					.function(ctx -> {
+						Boolean a = ctx.hasMappedOption("a") ? ctx.getOptionValue("a") : null;
+						Boolean b = ctx.hasMappedOption("b") ? ctx.getOptionValue("b") : null;
+						Boolean c = ctx.hasMappedOption("c") ? ctx.getOptionValue("c") : null;
+						return String.format("Hi a='%s' b='%s' c='%s'", a, b, c);
+					})
+					.and()
+				.withOption()
+					.shortNames('a')
+					.type(boolean.class)
+					.defaultValue("false")
+					.and()
+				.withOption()
+					.shortNames('b')
+					.type(boolean.class)
+					.defaultValue("false")
+					.and()
+				.withOption()
+					.shortNames('c')
+					.type(boolean.class)
+					.defaultValue("false")
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/UnrecognisedOptionCommands.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+public class UnrecognisedOptionCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "unrecognised-option-noother", group = GROUP)
+		public String testUnrecognisedOptionNoOtherAnnotation(
+		) {
+			return "Hi";
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "unrecognised-option-withrequired", group = GROUP)
+		public String testUnrecognisedOptionWithRequiredAnnotation(
+			@ShellOption(help = "Desc arg1") String arg1
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testUnrecognisedOptionNoOtherRegistration() {
+			return getBuilder()
+				.command(REG, "unrecognised-option-noother")
+				.group(GROUP)
+				.withTarget()
+					.function(ctx -> {
+						return "Hi";
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration testUnrecognisedOptionWithRequiredRegistration() {
+			return getBuilder()
+				.command(REG, "unrecognised-option-withrequired")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.description("Desc arg1")
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						String arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/ValidatedValueCommands.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import jakarta.validation.constraints.Min;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.shell.standard.ShellOption;
+import org.springframework.stereotype.Component;
+
+/**
+ * Commands used for e2e test.
+ *
+ * @author Janne Valkealahti
+ */
+public class ValidatedValueCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@ShellMethod(key = LEGACY_ANNO + "validated-value", group = GROUP)
+		public String testValidatedValueAnnotation(
+			@ShellOption @Min(value = 1) Integer arg1,
+			@ShellOption @Min(value = 1) Integer arg2
+		) {
+			return "Hello " + arg1;
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration testValidatedValueRegistration() {
+			return getBuilder()
+				.command(REG, "validated-value")
+				.group(GROUP)
+				.withOption()
+					.longNames("arg1")
+					.type(Integer.class)
+					.required()
+					.and()
+				.withOption()
+					.longNames("arg2")
+					.type(Integer.class)
+					.required()
+					.and()
+				.withTarget()
+					.function(ctx -> {
+						Integer arg1 = ctx.getOptionValue("arg1");
+						return "Hello " + arg1;
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/java/org/springframework/shell/samples/e2e/WriteCommands.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2022-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.shell.samples.e2e;
+
+import org.jline.terminal.Terminal;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.shell.command.CommandRegistration;
+import org.springframework.shell.standard.ShellComponent;
+import org.springframework.shell.standard.ShellMethod;
+import org.springframework.stereotype.Component;
+
+public class WriteCommands {
+
+	@ShellComponent
+	public static class LegacyAnnotation extends BaseE2ECommands {
+
+		@Autowired
+		Terminal terminal;
+
+		@ShellMethod(key = LEGACY_ANNO + "write-terminalwriter", group = GROUP)
+		public void writeTerminalWriterAnnotation() {
+			terminal.writer().println("hi");
+			terminal.writer().flush();
+		}
+
+		@ShellMethod(key = LEGACY_ANNO + "write-systemout", group = GROUP)
+		public void writeSystemOutAnnotation() {
+			System.out.println("hi");
+		}
+	}
+
+	@Component
+	public static class Registration extends BaseE2ECommands {
+
+		@Bean
+		public CommandRegistration writeTerminalWriterRegistration() {
+			return getBuilder()
+				.command(REG, "write-terminalwriter")
+				.group(GROUP)
+				.withTarget()
+					.consumer(ctx -> {
+						ctx.getTerminal().writer().println("hi");
+						ctx.getTerminal().writer().flush();
+					})
+					.and()
+				.build();
+		}
+
+		@Bean
+		public CommandRegistration writeSystemOutRegistration() {
+			return getBuilder()
+				.command(REG, "write-terminalwriter")
+				.group(GROUP)
+				.withTarget()
+					.consumer(ctx -> {
+						System.out.println("hi");
+					})
+					.and()
+				.build();
+		}
+	}
+}

spring-shell-samples/spring-shell-sample-e2e/src/main/resources/application.yml

@@ -0,0 +1,34 @@
+spring:
+  main:
+    banner-mode: off
+  shell:
+    ## pick global default option naming
+    # option:
+    #   naming:
+    #     case-type: noop
+    #     case-type: camel
+    #     case-type: snake
+    #     case-type: kebab
+    #     case-type: pascal
+    config:
+      env: SPRING_SHELL_SAMPLES_USER_HOME
+      location: "{userconfig}/spring-shell-samples"
+    history:
+      name: spring-shell-samples-history.log
+    command:
+      help:
+        grouping-mode: group
+      completion:
+        root-command: spring-shell-samples
+## disable console logging
+logging:
+  pattern:
+    console:
+## log debug from a cli
+#  file:
+#    name: shell.log
+#  level:
+#    root: debug
+#    org:
+#      springframework:
+#        shell: debug