Add Jupiter extension test

Issue: #2816

Author: YongGoose

platform-tests/src/test/java/org/junit/platform/launcher/core/LauncherFactoryTests.java

@@ -26,8 +26,12 @@
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.logging.LogRecord;
 
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.BeforeAllCallback;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.junit.jupiter.api.extension.ExtensionContext;
 import org.junit.jupiter.api.fixtures.TrackLogRecords;
 import org.junit.jupiter.engine.JupiterTestEngine;
 import org.junit.platform.commons.PreconditionViolationException;
@@ -37,11 +41,13 @@
 import org.junit.platform.engine.TestDescriptor;
 import org.junit.platform.engine.TestExecutionResult;
 import org.junit.platform.engine.UniqueId;
+import org.junit.platform.engine.support.store.Namespace;
 import org.junit.platform.fakes.TestEngineSpy;
 import org.junit.platform.launcher.InterceptedTestEngine;
 import org.junit.platform.launcher.InterceptorInjectedLauncherSessionListener;
 import org.junit.platform.launcher.LauncherConstants;
 import org.junit.platform.launcher.LauncherDiscoveryRequest;
+import org.junit.platform.launcher.LauncherSession;
 import org.junit.platform.launcher.LauncherSessionListener;
 import org.junit.platform.launcher.TagFilter;
 import org.junit.platform.launcher.TestExecutionListener;
@@ -333,6 +339,27 @@ public void executionFinished(TestIdentifier testIdentifier, TestExecutionResult
 		}));
 	}
 
+	@Test
+	void extensionCanReadValueFromSessionStore() {
+		var config = LauncherConfig.builder().addLauncherSessionListeners(
+			new LauncherSessionListenerExample()).enableTestEngineAutoRegistration(true).build();
+
+		try (LauncherSession session = LauncherFactory.openSession(config)) {
+			var launcher = session.getLauncher();
+			var request = LauncherDiscoveryRequestBuilder.request().selectors(selectClass(JupiterTest.class)).build();
+
+			AtomicReference<Throwable> errorRef = new AtomicReference<>();
+			launcher.execute(request, new TestExecutionListener() {
+				@Override
+				public void executionFinished(TestIdentifier testIdentifier, TestExecutionResult testExecutionResult) {
+					testExecutionResult.getThrowable().ifPresent(errorRef::set);
+				}
+			});
+
+			assertThat(errorRef.get()).isNull();
+		}
+	}
+
 	@SuppressWarnings("SameParameterValue")
 	private static void withSystemProperty(String key, String value, Runnable runnable) {
 		var oldValue = System.getProperty(key);
@@ -390,6 +417,33 @@ static class JUnit5Example {
 		@Test
 		void testJ5() {
 		}
+	}
+
+	@Nested
+	@ExtendWith(JupiterExtensionExample.class)
+	class JupiterTest {
+
+		@Test
+		void dummyTest() {
+			// Just a placeholder to trigger the extension
+		}
+	}
 
+	static class LauncherSessionListenerExample implements LauncherSessionListener {
+		@Override
+		public void launcherSessionOpened(LauncherSession session) {
+			session.getStore().put(Namespace.GLOBAL, "testKey", "testValue");
+		}
+	}
+
+	static class JupiterExtensionExample implements BeforeAllCallback {
+		@Override
+		public void beforeAll(ExtensionContext context) {
+			var value = context.getRoot().getStore(ExtensionContext.Namespace.GLOBAL).get("testKey");
+			if (!"testValue".equals(value)) {
+				throw new IllegalStateException("Expected 'testValue' but got: " + value);
+			}
+		}
 	}
+
 }