Add JupiterEngineTests

junit-platform-launcher/src/testFixtures/java/org/junit/platform/launcher/core/NamespacedHierarchicalStoreProviders.java

@@ -21,4 +21,8 @@ public class NamespacedHierarchicalStoreProviders {
 	public static NamespacedHierarchicalStore<Namespace> dummyNamespacedHierarchicalStore() {
 		return new NamespacedHierarchicalStore<>(store, closeAutoCloseables());
 	}
+
+	public static NamespacedHierarchicalStore<Namespace> dummyNamespacedHierarchicalStoreWithNoParent() {
+		return new NamespacedHierarchicalStore<>(null, closeAutoCloseables());
+	}
 }

jupiter-tests/src/test/java/org/junit/jupiter/engine/JupiterEngineTests.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2015-2025 the original author or authors.
+ *
+ * All rights reserved. This program and the accompanying materials are
+ * made available under the terms of the Eclipse Public License v2.0 which
+ * accompanies this distribution and is available at
+ *
+ * https://www.eclipse.org/legal/epl-v20.html
+ */
+
+package org.junit.jupiter.engine;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.engine.descriptor.JupiterEngineDescriptor;
+import org.junit.jupiter.engine.execution.JupiterEngineExecutionContext;
+import org.junit.platform.commons.JUnitException;
+import org.junit.platform.engine.ConfigurationParameters;
+import org.junit.platform.engine.EngineExecutionListener;
+import org.junit.platform.engine.ExecutionRequest;
+import org.junit.platform.engine.TestDescriptor;
+import org.junit.platform.launcher.core.NamespacedHierarchicalStoreProviders;
+
+/**
+ * @since  5.13
+ */
+public class JupiterEngineTests {
+
+	private final TestDescriptor rootTestDescriptor = mock(JupiterEngineDescriptor.class);
+
+	private final ConfigurationParameters configurationParameters = mock();
+
+	private final EngineExecutionListener engineExecutionListener = mock();
+
+	private final ExecutionRequest executionRequest = mock();
+
+	private final JupiterTestEngine engine = new JupiterTestEngine();
+
+	@BeforeEach
+	void setUp() {
+		when(executionRequest.getEngineExecutionListener()).thenReturn(engineExecutionListener);
+		when(executionRequest.getConfigurationParameters()).thenReturn(configurationParameters);
+		when(executionRequest.getRootTestDescriptor()).thenReturn(rootTestDescriptor);
+	}
+
+	@Test
+	void createExecutionContextWithValidRequest() {
+		when(executionRequest.getRequestLevelStore()).thenReturn(
+			NamespacedHierarchicalStoreProviders.dummyNamespacedHierarchicalStore());
+
+		JupiterEngineExecutionContext context = engine.createExecutionContext(executionRequest);
+		assertThat(context).isNotNull();
+	}
+
+	@Test
+	void createExecutionContextWithNoParentsRequestLevelStore() {
+		when(executionRequest.getRequestLevelStore()).thenReturn(
+			NamespacedHierarchicalStoreProviders.dummyNamespacedHierarchicalStoreWithNoParent());
+
+		assertThatThrownBy(() -> engine.createExecutionContext(executionRequest)).isInstanceOf(
+			JUnitException.class).hasMessageContaining("Request-level store must have a parent");
+	}
+
+}