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/*
* Copyright 2009 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;
/**
* Tests for {@link ChainCalls}
*
*/
public class ChainCallsTest extends CompilerTestCase {
@Override
protected CompilerPass getProcessor(final Compiler compiler) {
return new ChainCalls(compiler);
}
@Override
protected int getNumRepetitions() {
return 1;
}
public void testUnchainedCalls() {
test(
""
+ "/** @constructor */ function Foo() {}\n"
+ "Foo.prototype.bar = function() { return this; };\n"
+ "var f = new Foo();\n"
+ "f.bar();\n"
+ "f.bar();\n",
""
+ "/** @constructor */ function Foo() {}\n"
+ "Foo.prototype.bar = function() { return this; };\n"
+ "var f = new Foo();\n"
+ "f.bar().bar();\n");
}
public void testSecondCallReturnNotThis() {
test(
""
+ "/** @constructor */ function Foo() {}\n"
+ "Foo.prototype.bar = function() { return this; };\n"
+ "Foo.prototype.baz = function() {};\n"
+ "var f = new Foo();\n"
+ "f.bar();\n"
+ "f.baz();\n",
""
+ "/** @constructor */ function Foo() {}\n"
+ "Foo.prototype.bar = function() { return this; };\n"
+ "Foo.prototype.baz = function() {};\n"
+ "var f = new Foo();\n"
+ "f.bar().baz();\n");
}
public void testDifferentInstance() {
testSame(
""
+ "/** @constructor */ function Foo() {}\n"
+ "Foo.prototype.bar = function() { return this; };\n"
+ "new Foo().bar();\n"
+ "new Foo().bar();\n");
}
public void testSubclass() {
testSame(
""
+ "/** @constructor */ function Foo() {}\n"
+ "Foo.prototype.bar = function() { return this; };\n"
+ "/** @constructor\n@extends {Foo} */ function Baz() {}\n"
+ "Baz.prototype.bar = function() {};\n"
+ "(/** @type {Foo} */ new Baz()).bar();\n"
+ "(/** @type {Foo} */ new Baz()).bar();\n");
}
public void testSimpleDefinitionFinder() {
String defs =
"/** @constructor */ function Foo() {}\n" +
"Foo.prototype.a = function() { return this; };" +
"/** @constructor */ function Bar() {}\n" +
"Bar.prototype.a = function() {};";
testSame(
defs +
"var o = new Foo; o.a(); o.a();");
testSame(
defs +
"var o = new Bar; o.a(); o.a();");
}
public void testSimpleDefinitionFinder2() {
String defs =
"/** @constructor */ function Foo() {}\n" +
"Foo.prototype.a = function() { return this; };" +
"/** @constructor */ function Bar() {}\n" +
"Bar.prototype.a = function() { return this; };";
testSame(
defs +
"var o = new Foo; o.a().a();");
testSame(
defs +
"var o = new Bar; o.a().a();");
}
}
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