IBuildSupport extension point

org.eclipse.jdt.ls.core/src/org/eclipse/jdt/ls/core/internal/managers/StandardProjectsManager.java

@@ -78,7 +78,7 @@
 import org.eclipse.lsp4j.WatchKind;
 
 public class StandardProjectsManager extends ProjectsManager {
-	private static final String BUILD_SUPPORT_EXTENSION_POINT_ID = "buildSupport";
+	protected static final String BUILD_SUPPORT_EXTENSION_POINT_ID = "buildSupport";
 	private static final Set<String> watchers = new LinkedHashSet<>();
 	private PreferenceManager preferenceManager;
 	//@formatter:off
@@ -276,7 +276,7 @@ public Optional<IBuildSupport> getBuildSupport(IProject project) {
 		return buildSupports().filter(bs -> bs.applies(project)).findFirst();
 	}
 
-	private Stream<IBuildSupport> buildSupports() {
+	protected Stream<IBuildSupport> buildSupports() {
 		Map<Integer, IBuildSupport> supporters = new TreeMap<>();
 		IExtensionPoint extensionPoint = Platform.getExtensionRegistry().getExtensionPoint(IConstants.PLUGIN_ID, BUILD_SUPPORT_EXTENSION_POINT_ID);
 		IConfigurationElement[] configs = extensionPoint.getConfigurationElements();

org.eclipse.jdt.ls.tests/src/org/eclipse/jdt/ls/core/internal/managers/StandardProjectsManagerDummy.java

@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Red Hat Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Red Hat Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.ls.core.internal.managers;
+
+import java.util.stream.Stream;
+
+import org.eclipse.jdt.ls.core.internal.preferences.PreferenceManager;
+
+/**
+ * @author siarhei_leanavets1
+ *
+ */
+public class StandardProjectsManagerDummy extends StandardProjectsManager {
+
+	/**
+	 * @param preferenceManager
+	 */
+	public StandardProjectsManagerDummy(PreferenceManager preferenceManager) {
+		super(preferenceManager);
+	}
+
+	@Override
+	public Stream<IBuildSupport> buildSupports() {
+		return super.buildSupports();
+	}
+
+}

org.eclipse.jdt.ls.tests/src/org/eclipse/jdt/ls/core/internal/managers/StandartProjectManagerTest.java

@@ -0,0 +1,43 @@
+/*******************************************************************************
+ * Copyright (c) 2020 Red Hat Inc. and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Red Hat Inc. - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.ls.core.internal.managers;
+
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.eclipse.jdt.ls.core.internal.preferences.PreferenceManager;
+import org.eclipse.jdt.ls.core.internal.preferences.StandardPreferenceManager;
+import org.junit.Test;
+
+/**
+ * @author siarhei_leanavets1
+ *
+ */
+public class StandartProjectManagerTest {
+
+	@Test
+	public void testCheckBuildSupportOrder() {
+		PreferenceManager preferenceManager = mock(StandardPreferenceManager.class);
+		StandardProjectsManagerDummy projectsManagerDummy = new StandardProjectsManagerDummy(preferenceManager);
+		List<IBuildSupport> expectedList = Arrays.asList(new GradleBuildSupport(), new MavenBuildSupport(), new InvisibleProjectBuildSupport(), new DefaultProjectBuildSupport(), new EclipseBuildSupport());
+		List<IBuildSupport> actualList = projectsManagerDummy.buildSupports().collect(Collectors.toList());
+		for (int i = 0; i < expectedList.size(); i++) {
+			assertTrue(actualList.get(i).getClass().isInstance(expectedList.get(i)));
+		}
+	}
+
+}