Add tests for new main method launch protocol

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/commandmode/InstanceMainCommandModeTestCase.java

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+package io.quarkus.commandmode;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.runtime.annotations.QuarkusMain;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class InstanceMainCommandModeTestCase {
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(HelloWorldMain.class))
+            .setApplicationName("run-exit")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setExpectExit(true)
+            .setRun(true);
+
+    @Test
+    public void testRun() {
+        Assertions.assertThat(config.getStartupConsoleOutput()).contains("Hello World");
+        Assertions.assertThat(config.getExitCode()).isEqualTo(0);
+    }
+
+    @QuarkusMain
+    public static class HelloWorldMain {
+
+        void main(String[] args) {
+            System.out.println("Hello World");
+        }
+    }
+
+}

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/commandmode/InstanceMainNoArgsCommandModeTestCase.java

@@ -0,0 +1,34 @@
+package io.quarkus.commandmode;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.runtime.annotations.QuarkusMain;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class InstanceMainNoArgsCommandModeTestCase {
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(HelloWorldMain.class))
+            .setApplicationName("run-exit")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setExpectExit(true)
+            .setRun(true);
+
+    @Test
+    public void testRun() {
+        Assertions.assertThat(config.getStartupConsoleOutput()).contains("Hello World");
+        Assertions.assertThat(config.getExitCode()).isEqualTo(0);
+    }
+
+    @QuarkusMain
+    public static class HelloWorldMain {
+
+        void main() {
+            System.out.println("Hello World");
+        }
+    }
+
+}

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/commandmode/NonPublicStaticMainCommandModeTestCase.java

@@ -0,0 +1,34 @@
+package io.quarkus.commandmode;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.runtime.annotations.QuarkusMain;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class NonPublicStaticMainCommandModeTestCase {
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(HelloWorldMain.class))
+            .setApplicationName("run-exit")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setExpectExit(true)
+            .setRun(true);
+
+    @Test
+    public void testRun() {
+        Assertions.assertThat(config.getStartupConsoleOutput()).contains("Hello World");
+        Assertions.assertThat(config.getExitCode()).isEqualTo(0);
+    }
+
+    @QuarkusMain
+    public static class HelloWorldMain {
+
+        public static void main(String[] args) {
+            System.out.println("Hello World");
+        }
+    }
+
+}

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/commandmode/PrivateStaticMainCommandModeTestCase.java

@@ -0,0 +1,33 @@
+package io.quarkus.commandmode;
+
+import static org.junit.jupiter.api.Assertions.fail;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.runtime.annotations.QuarkusMain;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class PrivateStaticMainCommandModeTestCase {
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(HelloWorldMain.class))
+            .setApplicationName("run-exit")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setExpectedException(IllegalStateException.class);
+
+    @Test
+    public void shouldNeverRun() {
+        fail();
+    }
+
+    @QuarkusMain
+    public static class HelloWorldMain {
+
+        public static void main2(String[] args) {
+            System.out.println("Hello World");
+        }
+    }
+
+}

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/commandmode/ProtectedStaticMainNoArgsCommandModeTestCase.java

@@ -0,0 +1,34 @@
+package io.quarkus.commandmode;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.runtime.annotations.QuarkusMain;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class ProtectedStaticMainNoArgsCommandModeTestCase {
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(HelloWorldMain.class))
+            .setApplicationName("run-exit")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setExpectExit(true)
+            .setRun(true);
+
+    @Test
+    public void testRun() {
+        Assertions.assertThat(config.getStartupConsoleOutput()).contains("Hello World");
+        Assertions.assertThat(config.getExitCode()).isEqualTo(0);
+    }
+
+    @QuarkusMain
+    public static class HelloWorldMain {
+
+        protected static void main() {
+            System.out.println("Hello World");
+        }
+    }
+
+}

integration-tests/test-extension/extension/deployment/src/test/java/io/quarkus/commandmode/StaticMainNoArgsCommandModeTestCase.java

@@ -0,0 +1,34 @@
+package io.quarkus.commandmode;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.runtime.annotations.QuarkusMain;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class StaticMainNoArgsCommandModeTestCase {
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(HelloWorldMain.class))
+            .setApplicationName("run-exit")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setExpectExit(true)
+            .setRun(true);
+
+    @Test
+    public void testRun() {
+        Assertions.assertThat(config.getStartupConsoleOutput()).contains("Hello World");
+        Assertions.assertThat(config.getExitCode()).isEqualTo(0);
+    }
+
+    @QuarkusMain
+    public static class HelloWorldMain {
+
+        static void main() {
+            System.out.println("Hello World");
+        }
+    }
+
+}