Bug 76792 organize imports: not correct: 0 import(s) added. [code manipulation]
Organize imports falsely sums up the total of added and removed imports to display a difference. 0 import(s) added. means that the total of added and removed imports is 0. It would be better if it told the user something like: 1 import(s) removed, 1 import(s) added. The status message is slightly more useful than you might think at first glance, as in the odd case that it does not work (which I can't reproduce) you want to notice this, and a useful status message helps.
org.eclipse.jdt.ui.tests/ui/org/eclipse/jdt/ui/tests/core/ImportOrganizeTest.java
public void test2() throws Exception {
		File junitSrcArchive= JavaTestPlugin.getDefault().getFileInPlugin(JavaProjectHelper.JUNIT_SRC);
		assertTrue("junit src not found", junitSrcArchive != null && junitSrcArchive.exists());
		JavaProjectHelper.addSourceContainerWithImport(fJProject1, "src", junitSrcArchive);
		ICompilationUnit cu= (ICompilationUnit) fJProject1.findElement(new Path("junit/runner/LoadingTestCollector.java"));
		assertNotNull("LoadingTestCollector.java", cu);
		
		String[] order= new String[0];
		IChooseImportQuery query= createQuery("LoadingTestCollector", new String[] { }, new int[] { });
		
		OrganizeImportsOperation op= new OrganizeImportsOperation(cu, order, 99, false, true, true, query);
		op.run(null);
		
		assertImports(cu, new String[] {
			"java.lang.reflect.Constructor",
			"java.lang.reflect.Method",
			"java.lang.reflect.Modifier",
			"junit.framework.Test"	
		});	
	}
	
	
	public void test3() throws Exception {
		File junitSrcArchive= JavaTestPlugin.getDefault().getFileInPlugin(JavaProjectHelper.JUNIT_SRC);
		assertTrue("junit src not found", junitSrcArchive != null && junitSrcArchive.exists());
		JavaProjectHelper.addSourceContainerWithImport(fJProject1, "src", junitSrcArchive);
		ICompilationUnit cu= (ICompilationUnit) fJProject1.findElement(new Path("junit/runner/TestCaseClassLoader.java"));
		assertNotNull("TestCaseClassLoader.java", cu);