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/*
* Copyright 2010 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.javascript.jscomp;
/**
* @author johnlenz@google.com (John Lenz)
*/
public class CheckRegExpTest extends CompilerTestCase {
CheckRegExp last = null;
public CheckRegExpTest() {
super("var RegExp;", true);
}
@Override
protected CompilerPass getProcessor(Compiler compiler) {
compiler.options.setWarningLevel(
DiagnosticGroups.CHECK_REGEXP, CheckLevel.WARNING);
last = new CheckRegExp(compiler);
return last;
}
private void testReference(String code, boolean expected) {
testSame(code, (expected) ? CheckRegExp.REGEXP_REFERENCE : null);
assertEquals(expected, last.isGlobalRegExpPropertiesUsed());
}
public void testRegExp() {
// Creating regexp's is ok
testReference("RegExp();", false);
testReference("var x = RegExp();", false);
testReference("new RegExp();", false);
testReference("var x = new RegExp();", false);
// Checking for RegExp instances is OK, as well.
testReference("x instanceof RegExp;", false);
// Any other reference isn't
testReference("RegExp.test();", true);
testReference("var x = RegExp.test();", true);
testReference("RegExp.exec();", true);
testReference("RegExp.$1;", true);
testReference("RegExp.foobar;", true);
testReference("delete RegExp;", true);
// Aliases aren't allowed
testReference("var x = RegExp;", true);
testReference("f(RegExp);", true);
testReference("new f(RegExp);", true);
testReference("var x = RegExp; x.test()", true);
// No RegExp reference is ok
testReference("var x;", false);
// Local RegExp is ok
testReference("function f() {var RegExp; RegExp.test();}", false);
}
}
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