@Test
public void testDeprecated() throws Exception {
	IJavaProject javaProject = newEmptyProject();
	IPackageFragmentRoot sourceFolder = javaProject.getPackageFragmentRoot(javaProject.getProject().getFolder("src"));
	IPackageFragment pack1 = sourceFolder.createPackageFragment("test1", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test1;\n");
	buf.append("import java.security.Certificate;\n");
	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	CompilationUnit astRoot = CoreASTProvider.getInstance().getAST(cu, CoreASTProvider.WAIT_YES, monitor);
	IProblem[] problems = astRoot.getProblems();
	List<Diagnostic> diagnostics = DiagnosticsHandler.toDiagnosticsArray(cu, Arrays.asList(problems), true);
	assertEquals(2, diagnostics.size());
	List<DiagnosticTag> tags = diagnostics.get(0).getTags();
	assertEquals(1, tags.size());
	assertEquals(DiagnosticTag.Deprecated, tags.get(0));
}
 

@Test
public void testUnnecessary() throws Exception {
	IJavaProject javaProject = newEmptyProject();
	IPackageFragmentRoot sourceFolder = javaProject.getPackageFragmentRoot(javaProject.getProject().getFolder("src"));
	IPackageFragment pack1 = sourceFolder.createPackageFragment("test1", false, null);

	StringBuilder buf = new StringBuilder();
	buf.append("package test1;\n");
	buf.append("import java.security.*;\n");
	ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null);

	CompilationUnit asRoot = CoreASTProvider.getInstance().getAST(cu, CoreASTProvider.WAIT_YES, monitor);
	IProblem[] problems = asRoot.getProblems();
	List<Diagnostic> diagnostics = DiagnosticsHandler.toDiagnosticsArray(cu, Arrays.asList(problems), true);
	assertEquals(1, diagnostics.size());
	List<DiagnosticTag> tags = diagnostics.get(0).getTags();
	assertEquals(1, tags.size());
	assertEquals(DiagnosticTag.Unnecessary, tags.get(0));
}
 

public static List<DiagnosticTag> getDiagnosticTag(int id) {
	switch (id) {
		case IProblem.UsingDeprecatedType:
		case IProblem.UsingDeprecatedField:
		case IProblem.UsingDeprecatedMethod:
		case IProblem.UsingDeprecatedConstructor:
		case IProblem.OverridingDeprecatedMethod:
		case IProblem.JavadocUsingDeprecatedField:
		case IProblem.JavadocUsingDeprecatedConstructor:
		case IProblem.JavadocUsingDeprecatedMethod:
		case IProblem.JavadocUsingDeprecatedType:
		case IProblem.UsingTerminallyDeprecatedType:
		case IProblem.UsingTerminallyDeprecatedMethod:
		case IProblem.UsingTerminallyDeprecatedConstructor:
		case IProblem.UsingTerminallyDeprecatedField:
		case IProblem.OverridingTerminallyDeprecatedMethod:
		case IProblem.UsingDeprecatedSinceVersionType:
		case IProblem.UsingDeprecatedSinceVersionMethod:
		case IProblem.UsingDeprecatedSinceVersionConstructor:
		case IProblem.UsingDeprecatedSinceVersionField:
		case IProblem.OverridingDeprecatedSinceVersionMethod:
		case IProblem.UsingTerminallyDeprecatedSinceVersionType:
		case IProblem.UsingTerminallyDeprecatedSinceVersionMethod:
		case IProblem.UsingTerminallyDeprecatedSinceVersionConstructor:
		case IProblem.UsingTerminallyDeprecatedSinceVersionField:
		case IProblem.OverridingTerminallyDeprecatedSinceVersionMethod:
		case IProblem.UsingDeprecatedPackage:
		case IProblem.UsingDeprecatedSinceVersionPackage:
		case IProblem.UsingTerminallyDeprecatedPackage:
		case IProblem.UsingTerminallyDeprecatedSinceVersionPackage:
		case IProblem.UsingDeprecatedModule:
		case IProblem.UsingDeprecatedSinceVersionModule:
		case IProblem.UsingTerminallyDeprecatedModule:
		case IProblem.UsingTerminallyDeprecatedSinceVersionModule:
			return Arrays.asList(DiagnosticTag.Deprecated);
		case IProblem.UnnecessaryCast:
		case IProblem.UnnecessaryInstanceof:
		case IProblem.UnnecessaryElse:
		case IProblem.UnnecessaryNLSTag:
		// Report *unused* cases as unnecessary
		case IProblem.UnusedPrivateType:
		case IProblem.UnusedPrivateField:
		case IProblem.UnusedPrivateMethod:
		case IProblem.UnusedPrivateConstructor:
		case IProblem.UnusedObjectAllocation:
		case IProblem.UnusedMethodDeclaredThrownException:
		case IProblem.UnusedConstructorDeclaredThrownException:
		case IProblem.UnusedLabel:
		case IProblem.UnusedImport:
		case IProblem.UnusedTypeArgumentsForMethodInvocation:
		case IProblem.UnusedWarningToken:
		case IProblem.UnusedTypeArgumentsForConstructorInvocation:
		case IProblem.UnusedTypeParameter:
		// Other unused cases
		case IProblem.LocalVariableIsNeverUsed:
		case IProblem.ArgumentIsNeverUsed:
		case IProblem.ExceptionParameterIsNeverUsed:
			return Arrays.asList(DiagnosticTag.Unnecessary);
	}

	return null;
}
 

public DiagnosticsTagSupport() {
  ArrayList<DiagnosticTag> _arrayList = new ArrayList<DiagnosticTag>();
  this.valueSet = _arrayList;
}
 

public DiagnosticsTagSupport(@NonNull final List<DiagnosticTag> valueSet) {
  this.valueSet = Preconditions.<List<DiagnosticTag>>checkNotNull(valueSet, "valueSet");
}
 

/**
 * The tags supported by the client.
 */
@Pure
@NonNull
public List<DiagnosticTag> getValueSet() {
  return this.valueSet;
}
 

/**
 * The tags supported by the client.
 */
public void setValueSet(@NonNull final List<DiagnosticTag> valueSet) {
  this.valueSet = Preconditions.checkNotNull(valueSet, "valueSet");
}
 

/**
 * Additional metadata about the diagnostic.
 * 
 * Since 3.15.0
 */
@Pure
public List<DiagnosticTag> getTags() {
  return this.tags;
}
 

/**
 * Additional metadata about the diagnostic.
 * 
 * Since 3.15.0
 */
public void setTags(final List<DiagnosticTag> tags) {
  this.tags = tags;
}