Move the unit tests from commandlinerunner to separate project

See gh-142

boot/command-line-runner/src/main/java/com/example/commandlinerunner/CommandlinerunnerApplication.java

@@ -7,9 +7,7 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
 public class CommandlinerunnerApplication {
 
 	public static void main(String[] args) {
-		SpringApplication application = new SpringApplication(CommandlinerunnerApplication.class);
-		System.setProperty("main.ran", "true");
-		application.run(args);
+		SpringApplication.run(CommandlinerunnerApplication.class, args);
 	}
 
 }

boot/tcf/README.adoc

@@ -0,0 +1 @@
+Tests if Spring Boot's TestContext Framework is working

boot/tcf/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+	id 'java'
+	id 'org.springframework.boot'
+	id 'org.springframework.aot.smoke-test'
+	id 'org.graalvm.buildtools.native'
+}
+
+dependencies {
+	implementation(platform(org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES))
+	implementation("org.springframework.boot:spring-boot-starter")
+
+	testImplementation("org.springframework.boot:spring-boot-starter-test")
+
+	appTestImplementation(project(":aot-smoke-test-support"))
+	appTestImplementation("org.awaitility:awaitility:4.2.0")
+}

boot/tcf/src/main/java/com/example/boot/tcf/BootTcfApplication.java

@@ -0,0 +1,15 @@
+package com.example.boot.tcf;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BootTcfApplication {
+
+	public static void main(String[] args) {
+		SpringApplication application = new SpringApplication(BootTcfApplication.class);
+		System.setProperty("main.ran", "true");
+		application.run(args);
+	}
+
+}

boot/tcf/src/test/java/com/example/boot/tcf/ArgsTest.java

@@ -1,4 +1,4 @@
-package com.example.commandlinerunner;
+package com.example.boot.tcf;
 
 import java.util.List;
 
@@ -7,19 +7,12 @@ import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.ApplicationArguments;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.test.context.SpringBootTest.UseMainMethod;
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-@SpringBootTest(webEnvironment = WebEnvironment.NONE, useMainMethod = UseMainMethod.ALWAYS, args = "--test.args=1")
-class CommandlinerunnerApplicationTests {
-
-	@Test
-	void mainShouldRun() {
-		String property = System.getProperty("main.ran", "false");
-		assertThat(property).isEqualTo("true");
-	}
+@SpringBootTest(webEnvironment = WebEnvironment.NONE, args = "--test.args=1")
+class ArgsTest {
 
 	@Test
 	void shouldPassArgs(@Autowired ApplicationArguments applicationArguments) {

boot/tcf/src/test/java/com/example/boot/tcf/MainMethodTests.java

@@ -0,0 +1,20 @@
+package com.example.boot.tcf;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.UseMainMethod;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringBootTest(webEnvironment = WebEnvironment.NONE, useMainMethod = UseMainMethod.ALWAYS)
+class MainMethodTests {
+
+	@Test
+	void mainShouldRun() {
+		String property = System.getProperty("main.ran", "false");
+		assertThat(property).isEqualTo("true");
+	}
+
+}

boot/tcf/src/test/java/com/example/boot/tcf/OutputCaptureTests.java

@@ -1,4 +1,4 @@
-package com.example.commandlinerunner;
+package com.example.boot.tcf;
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;

boot/tcf/src/test/java/com/example/boot/tcf/PropertiesTests.java

@@ -1,4 +1,4 @@
-package com.example.commandlinerunner;
+package com.example.boot.tcf;
 
 import org.junit.jupiter.api.Test;