152 lines
4.6 KiB
Java
152 lines
4.6 KiB
Java
/*
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* Copyright 2009 The Closure Compiler Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.javascript.jscomp;
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import com.google.javascript.jscomp.CheckLevel;
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import com.google.javascript.jscomp.type.SemanticReverseAbstractInterpreter;
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import com.google.javascript.rhino.Node;
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/**
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* Tests for {@link RemoveUnusedPrototypeProperties}.
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*
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* @author nicksantos@google.com (Nick Santos)
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*/
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public class RemoveUnusedNamesTest extends CompilerTestCase {
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private static final String EXTERNS =
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"/** @constructor */\n " +
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"function IFoo() { } \n" +
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"IFoo.prototype.bar; \n" +
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"/** @constructor */\n " +
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"var mExtern; \n" +
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"mExtern.bExtern; \n" +
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"mExtern['cExtern']; \n";
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public RemoveUnusedNamesTest() {
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super(EXTERNS);
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}
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private boolean canRemoveExterns = false;
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@Override
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protected int getNumRepetitions() {
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return 1;
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}
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@Override
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protected CompilerPass getProcessor(final Compiler compiler) {
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return new CompilerPass() {
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@Override
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public void process(Node externs, Node root) {
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new TypeCheck(compiler,
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new SemanticReverseAbstractInterpreter(
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compiler.getCodingConvention(),
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compiler.getTypeRegistry()),
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compiler.getTypeRegistry(),
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CheckLevel.ERROR,
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CheckLevel.ERROR).processForTesting(externs, root);
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new RemoveUnusedNames(
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compiler, canRemoveExterns).process(externs, root);
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// Use to remove side-effect-free artifacts that are left over.
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new UnreachableCodeElimination(compiler, true).process(externs, root);
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}
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};
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}
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@Override
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public void setUp() {
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canRemoveExterns = false;
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}
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public void testAnalyzeUnusedPrototypeProperties() {
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// Basic removal for prototype properties
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test("/** @constructor */ \n" +
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"function e(){} \n" +
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"e.prototype.a = function(){};" +
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"e.prototype.b = function(){};" +
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"var x = new e; x.a()",
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"function e(){}" +
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" e.prototype.a = function(){};" +
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"var x = new e; x.a()");
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}
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public void testAnalyzeUnusedPrototypeProperties2() {
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// TODO(user): Prototype literal not yet supported.
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// Basic removal for prototype replacement
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//test("/** @constructor */ \n" +
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// "function e(){} \n" +
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// "e.prototype = {a: function(){}, b: function(){}};" +
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// "var x=new e; x.a()",
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//
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// "function e(){}" +
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// "e.prototype = {a: function(){}};" +
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// "var x = new e; x.a()");
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}
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public void testAnalyzeUnusedPrototypeProperties3() {
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// Even if bExtern is out there somewhere. The type system tells us they
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// are unrelated.
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test("/** @constructor */ \n" +
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"function e(){} \n" +
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"e.prototype.a = function(){};" +
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"e.prototype.bExtern = function(){};" +
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"var x = new e;x.a()",
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"function e(){}" +
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"e.prototype.a = function(){};" +
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//"e.prototype.bExtern = function(){};" +
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"var x = new e; x.a()");
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// TODO(user): Prototype literal not yet supported.
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//test("/** @constructor */ \n" +
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// "function e(){} \n" +
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// "e.prototype = {a: function(){}, bExtern: function(){}};" +
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// "var x = new e; x.a()",
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// "function e(){}" +
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// "e.prototype = {a: function(){}, bExtern: function(){}};" +
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// "var x = new e; x.a()");
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}
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public void testAliasing() {
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// TODO(user): Not fully supported.
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}
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public void testStatement() {
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test("/**\n" +
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" * @fileoverview\n" +
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" * @notypecheck\n" +
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" */ \n" +
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"/** @constructor */" +
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"function e(){}" +
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"var x = e.prototype.method1 = function(){};" +
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"var y = new e; x()",
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"function e(){}" +
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"var x = function(){};" +
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"var y = new e; x()");
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}
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public void testExportedMethodsByNamingConvention() {
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// TODO(user): Not fully supported.
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}
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public void testExportedMethodsByNamingConventionAlwaysExported() {
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// TODO(user): Not fully supported.
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}
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}
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