Test terminal can set dimensions

- ShellTest now has fields which can be used to
  change terminal default widht/height.
- Backed by properties so can be used with
  `spring.shell.test.terminal-width` and
  `spring.shell.test.terminal-height`.
- Fixes #656

spring-shell-test-autoconfigure/src/test/java/org/springframework/shell/test/autoconfigure/ShellTestPropertiesIntegrationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 the original author or authors.
+ * 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.
@@ -20,6 +20,7 @@ import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.core.env.Environment;
 import org.springframework.shell.test.autoconfigure.app.ExampleShellApplication;
+import org.springframework.shell.test.jediterm.terminal.ui.TerminalSession;
 import org.springframework.test.context.ContextConfiguration;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -30,15 +31,25 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Janne Valkealahti
  */
-@ShellTest(properties = "spring.profiles.active=test")
+@ShellTest(properties = { "spring.profiles.active=test", "spring.shell.test.terminal-width=81",
+		"spring.shell.test.terminal-height=25" })
 @ContextConfiguration(classes = ExampleShellApplication.class)
 public class ShellTestPropertiesIntegrationTests {
 
 	@Autowired
 	private Environment environment;
 
+	@Autowired
+	private TerminalSession session;
+
 	@Test
 	void environmentWithNewProfile() {
 		assertThat(this.environment.getActiveProfiles()).containsExactly("test");
 	}
+
+	@Test
+	void dimensionsSet() {
+		assertThat(session.getTerminal().getTerminalWidth()).isEqualTo(81);
+		assertThat(session.getTerminal().getTerminalHeight()).isEqualTo(25);
+	}
 }

spring-shell-test-autoconfigure/src/test/java/org/springframework/shell/test/autoconfigure/ShellTestTerminalDimensionsIntegrationTests.java

@@ -0,0 +1,39 @@
+/*
+ * 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.test.autoconfigure;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.shell.test.autoconfigure.app.ExampleShellApplication;
+import org.springframework.shell.test.jediterm.terminal.ui.TerminalSession;
+import org.springframework.test.context.ContextConfiguration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ShellTest(terminalWidth = 81, terminalHeight = 25)
+@ContextConfiguration(classes = ExampleShellApplication.class)
+class ShellTestTerminalDimensionsIntegrationTests {
+
+	@Autowired
+	private TerminalSession session;
+
+	@Test
+	void dimensionsSet() {
+		assertThat(session.getTerminal().getTerminalWidth()).isEqualTo(81);
+		assertThat(session.getTerminal().getTerminalHeight()).isEqualTo(25);
+	}
+}

spring-shell-test-autoconfigure/src/test/java/org/springframework/shell/test/autoconfigure/SpringShellTestPropertiesTests.java

@@ -0,0 +1,56 @@
+/*
+ * 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.test.autoconfigure;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class SpringShellTestPropertiesTests {
+
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner();
+
+	@Test
+	public void defaultNoPropertiesSet() {
+		this.contextRunner
+				.withUserConfiguration(Config1.class)
+				.run((context) -> {
+					SpringShellTestProperties properties = context.getBean(SpringShellTestProperties.class);
+					assertThat(properties.getTerminalWidth()).isEqualTo(80);
+					assertThat(properties.getTerminalHeight()).isEqualTo(24);
+				});
+	}
+
+	@Test
+	public void setProperties() {
+		this.contextRunner
+				.withPropertyValues("spring.shell.test.terminal-width=81")
+				.withPropertyValues("spring.shell.test.terminal-height=25")
+				.withUserConfiguration(Config1.class)
+				.run((context) -> {
+					SpringShellTestProperties properties = context.getBean(SpringShellTestProperties.class);
+					assertThat(properties.getTerminalWidth()).isEqualTo(81);
+					assertThat(properties.getTerminalHeight()).isEqualTo(25);
+				});
+	}
+
+	@EnableConfigurationProperties({ SpringShellTestProperties.class })
+	private static class Config1 {
+	}
+}