356 lines
11 KiB
Java
356 lines
11 KiB
Java
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/*
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* Copyright 2007 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.common.collect.ImmutableSet;
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import java.util.*;
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/**
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* Tests for {@link AliasStrings}.
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*
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*/
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public class AliasStringsTest extends CompilerTestCase {
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private static final String EXTERNS = "alert";
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private static final Set<String> ALL_STRINGS = null;
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private Set<String> strings = ALL_STRINGS;
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private JSModuleGraph moduleGraph = null;
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private boolean hashReduction = false;
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public AliasStringsTest() {
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super(EXTERNS);
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}
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@Override
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public void setUp() {
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super.enableLineNumberCheck(false);
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}
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@Override
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public CompilerPass getProcessor(Compiler compiler) {
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AliasStrings pass =
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new AliasStrings(compiler, moduleGraph, strings, "(?i)secret", false);
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if (hashReduction)
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pass.unitTestHashReductionMask = 0;
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return pass;
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}
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public void testAssignment() {
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strings = ImmutableSet.of("none", "width", "overimaginative");
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// Strings not in alias list
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testSame("var foo='foo'");
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testSame("a='titanium',b='titanium',c='titanium',d='titanium'");
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// Not worth aliasing:
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testSame("myStr='width'");
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testSame("Bar.prototype.start='none'");
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// Worth aliasing:
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test("a='overimaginative';b='overimaginative'",
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"var $$S_overimaginative='overimaginative';" +
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"a=$$S_overimaginative;b=$$S_overimaginative");
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testSame("var width=1234");
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testSame("width=1234;width=10000;width=9900;width=17;");
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}
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public void testSeveral() {
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strings = ImmutableSet.of("", "px", "none", "width");
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test("function f() {" +
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"var styles=['width',100,'px','display','none'].join('')}",
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"var $$S_='';" +
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"var $$S_none='none';" +
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"var $$S_px='px';" +
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"var $$S_width='width';" +
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"function f() {var styles=[$$S_width,100,$$S_px,'display'," +
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"$$S_none].join($$S_)}");
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}
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public void testSortedOutput() {
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strings = ImmutableSet.of("aba", "aaa", "aca", "bca", "bba");
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test("function f() {return ['aba', 'aaa', 'aca', 'bca', 'bba']}",
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"var $$S_aaa='aaa';" +
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"var $$S_aba='aba';" +
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"var $$S_aca='aca';" +
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"var $$S_bba='bba';" +
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"var $$S_bca='bca';" +
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"function f() {" +
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" return [$$S_aba, $$S_aaa, $$S_aca, $$S_bca, $$S_bba]}");
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}
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public void testObjectLiterals() {
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strings = ImmutableSet.of("px", "!@#$%^&*()");
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test("var foo={px:435}", "var foo={px:435}");
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// string as key
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test("var foo={'px':435}", "var foo={'px':435}");
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test("bar=function f(){return {'px':435}}",
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"bar=function f(){return {'px':435}}");
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test("function f() {var foo={bar:'!@#$%^&*()'}}",
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"var $$S_$21$40$23$24$25$5e$26$2a$28$29='!@#$%^&*()';" +
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"function f() {var foo={bar:$$S_$21$40$23$24$25$5e$26$2a$28$29}}");
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test("function f() {var foo={px:435,foo:'px',bar:'baz'}}",
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"var $$S_px='px';" +
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"function f() {var foo={px:435,foo:$$S_px,bar:'baz'}}");
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}
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public void testGetProp() {
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strings = ImmutableSet.of("px", "width");
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testSame("function f(){element.style.px=1234}");
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test("function f(){shape.width.units='px'}",
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"var $$S_px='px';function f(){shape.width.units=$$S_px}");
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test("function f(){shape['width'].units='pt'}",
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"var $$S_width='width';" +
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"function f(){shape[$$S_width].units='pt'}");
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}
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public void testFunctionCalls() {
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strings = ImmutableSet.of("", ",", "overimaginative");
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// Not worth aliasing
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testSame("alert('')");
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testSame("var a=[1,2,3];a.join(',')");
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// worth aliasing
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test("f('overimaginative', 'overimaginative')",
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"var $$S_overimaginative='overimaginative';" +
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"f($$S_overimaginative,$$S_overimaginative)");
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}
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public void testRegularExpressions() {
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strings = ImmutableSet.of("px");
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testSame("/px/.match('10px')");
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}
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public void testBlackList() {
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test("(function (){var f=\'sec ret\';g=\"TOPseCreT\"})",
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"var $$S_sec$20ret='sec ret';" +
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"(function (){var f=$$S_sec$20ret;g=\"TOPseCreT\"})");
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}
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public void testLongStableAlias() {
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strings = ALL_STRINGS;
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// Check long strings get a hash code
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test("a='Antidisestablishmentarianism';" +
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"b='Antidisestablishmentarianism';",
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"var $$S_Antidisestablishment_506eaf9c=" +
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" 'Antidisestablishmentarianism';" +
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"a=$$S_Antidisestablishment_506eaf9c;" +
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"b=$$S_Antidisestablishment_506eaf9c");
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// Check that small changes give different hash codes
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test("a='AntidisestablishmentarianIsm';" +
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"b='AntidisestablishmentarianIsm';",
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"var $$S_Antidisestablishment_6823e97c=" +
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" 'AntidisestablishmentarianIsm';" +
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"a=$$S_Antidisestablishment_6823e97c;" +
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"b=$$S_Antidisestablishment_6823e97c");
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// TODO(user): check that hash code collisions are handled.
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}
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public void testLongStableAliasHashCollision() {
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strings = ALL_STRINGS;
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hashReduction = true;
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// Check that hash code collisions generate different alias
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// variable names
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test("f('Antidisestablishmentarianism');" +
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"f('Antidisestablishmentarianism');" +
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"f('Antidisestablishmentarianismo');" +
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"f('Antidisestablishmentarianismo');",
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"var $$S_Antidisestablishment_0=" +
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" 'Antidisestablishmentarianism';" +
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"var $$S_Antidisestablishment_0_1=" +
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" 'Antidisestablishmentarianismo';" +
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"f($$S_Antidisestablishment_0);" +
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"f($$S_Antidisestablishment_0);" +
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"f($$S_Antidisestablishment_0_1);" +
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"f($$S_Antidisestablishment_0_1);");
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}
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public void testStringsThatAreGlobalVarValues() {
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strings = ALL_STRINGS;
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testSame("var foo='foo'; var bar='';");
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// Regular array
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testSame("var foo=['foo','bar'];");
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// Nested array
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testSame("var foo=['foo',['bar']];");
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// Same string is in a global array and a local in a function
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test("var foo=['foo', 'bar'];function bar() {return 'foo';}",
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"var $$S_foo='foo';" +
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"var foo=[$$S_foo, 'bar'];function bar() {return $$S_foo;}");
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// Regular object literal
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testSame("var foo={'foo': 'bar'};");
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// Nested object literal
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testSame("var foo={'foo': {'bar': 'baz'}};");
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// Same string is in a global object literal (as key) and local in a
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// function
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test("var foo={'foo': 'bar'};function bar() {return 'foo';}",
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"var $$S_foo='foo';var foo={'foo': 'bar'};" +
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"function bar() {return $$S_foo;}");
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// Same string is in a global object literal (as value) and local in a
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// function
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test("var foo={'foo': 'foo'};function bar() {return 'foo';}",
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"var $$S_foo='foo';" +
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"var foo={'foo': $$S_foo};function bar() {return $$S_foo;}");
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}
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public void testStringsInModules() {
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strings = ALL_STRINGS;
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// Aliases must be placed in the correct module. The alias for
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// '------adios------' must be lifted from m2 and m3 and go in the
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// common parent module m1
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JSModule[] modules =
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createModuleBush(
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// m0
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"function f(a) { alert('f:' + a); }" +
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"function g() { alert('ciao'); }",
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// m1
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"f('-------hi-------');" +
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"f('bye');" +
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"function h(a) { alert('h:' + a); }",
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// m2
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"f('-------hi-------');" +
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"h('ciao' + '------adios------');" +
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"(function() { alert('zzz'); })();",
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// m3
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"f('-------hi-------'); alert('------adios------');" +
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"h('-----peaches-----'); h('-----peaches-----');");
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moduleGraph = new JSModuleGraph(modules);
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test(modules,
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new String[] {
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// m1
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"var $$S_ciao = 'ciao';" +
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"var $$S_f$3a = 'f:';" +
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"function f(a) { alert($$S_f$3a + a); }" +
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"function g() { alert($$S_ciao); }",
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// m2
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"var $$S_$2d$2d$2d$2d$2d$2d$2dhi$2d$2d$2d$2d$2d$2d$2d" +
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" = '-------hi-------';" +
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"var $$S_$2d$2d$2d$2d$2d$2d_adios$2d$2d$2d$2d$2d$2d" +
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" = '------adios------'; " +
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"var $$S_h$3a = 'h:';" +
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"f($$S_$2d$2d$2d$2d$2d$2d$2dhi$2d$2d$2d$2d$2d$2d$2d);" +
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"f('bye');" +
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"function h(a) { alert($$S_h$3a + a); }",
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// m3
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"var $$S_zzz = 'zzz';" +
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"f($$S_$2d$2d$2d$2d$2d$2d$2dhi$2d$2d$2d$2d$2d$2d$2d);" +
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"h($$S_ciao + $$S_$2d$2d$2d$2d$2d$2d_adios$2d$2d$2d$2d$2d$2d);" +
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"(function() { alert($$S_zzz) })();",
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// m4
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"var $$S_$2d$2d$2d$2d$2dpeaches$2d$2d$2d$2d$2d" +
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" = '-----peaches-----';" +
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"f($$S_$2d$2d$2d$2d$2d$2d$2dhi$2d$2d$2d$2d$2d$2d$2d);" +
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"alert($$S_$2d$2d$2d$2d$2d$2d_adios$2d$2d$2d$2d$2d$2d);" +
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"h($$S_$2d$2d$2d$2d$2dpeaches$2d$2d$2d$2d$2d);" +
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"h($$S_$2d$2d$2d$2d$2dpeaches$2d$2d$2d$2d$2d);",
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});
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moduleGraph = null;
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}
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public void testStringsInModules2() {
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strings = ALL_STRINGS;
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// Aliases must be placed in the correct module. The alias for
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// '------adios------' must be lifted from m2 and m3 and go in the
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// common parent module m1
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JSModule[] modules =
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createModuleBush(
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// m0
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"function g() { alert('ciao'); }",
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// m1
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"function h(a) { alert('h:' + a); }",
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// m2
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"h('ciao' + 'adios');",
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// m3
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"g();");
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moduleGraph = new JSModuleGraph(modules);
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test(modules,
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new String[] {
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// m1
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"var $$S_ciao = 'ciao';" +
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"function g() { alert($$S_ciao); }",
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// m2
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"var $$S_h$3a = 'h:';" +
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"function h(a) { alert($$S_h$3a + a); }",
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// m3
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"h($$S_ciao + 'adios');",
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// m4
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"g();",
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});
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moduleGraph = null;
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}
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public void testEmptyModules() {
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JSModule[] modules =
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createModuleStar(
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// m0
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"",
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// m1
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"function foo() { f('good') }",
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// m2
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"function foo() { f('good') }");
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moduleGraph = new JSModuleGraph(modules);
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test(modules,
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new String[] {
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// m0
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"var $$S_good='good'",
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// m1
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"function foo() {f($$S_good)}",
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// m2
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"function foo() {f($$S_good)}",});
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|
|
moduleGraph = null;
|
||
|
|
}
|
||
|
|
}
|