Add hierarchical preferences test to test suite and initialize default value

Co-authored-by: laeubi <[email protected]>

Author: Copilot

resources/bundles/org.eclipse.core.resources/src/org/eclipse/core/internal/resources/PreferenceInitializer.java

@@ -103,6 +103,10 @@ public void initializeDefaultPreferences() {
 		// encoding defaults
 		node.put(ResourcesPlugin.PREF_ENCODING, PREF_ENCODING_DEFAULT);
 
+		// hierarchical project preferences defaults
+		node.putBoolean(ResourcesPlugin.PREF_ENABLE_HIERARCHICAL_PROJECT_PREFERENCES,
+				ResourcesPlugin.DEFAULT_PREF_ENABLE_HIERARCHICAL_PROJECT_PREFERENCES);
+
 		// parallel builds defaults
 		node.putInt(ResourcesPlugin.PREF_MAX_CONCURRENT_BUILDS, PREF_MAX_CONCURRENT_BUILDS_DEFAULT);
 	}

resources/tests/org.eclipse.core.tests.resources/src/org/eclipse/core/tests/internal/resources/AllInternalResourcesTests.java

@@ -24,6 +24,7 @@
 @Suite
 @SelectClasses({ //
 		Bug544975Test.class, //
+		HierarchicalProjectPreferencesTest.class, //
 		ModelObjectReaderWriterTest.class, //
 		ProjectBuildConfigsTest.class, //
 		ProjectDynamicReferencesTest.class, //