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/*
* Copyright 2008 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 CrossModuleMethodMotion}.
*
* @author nicksantos@google.com (Nick Santos)
*/
public class CrossModuleMethodMotionTest extends CompilerTestCase {
private static final String EXTERNS =
"IFoo.prototype.bar; var mExtern; mExtern.bExtern; mExtern['cExtern'];";
private boolean canMoveExterns = false;
private final String STUB_DECLARATIONS =
CrossModuleMethodMotion.STUB_DECLARATIONS;
public CrossModuleMethodMotionTest() {
super(EXTERNS);
}
@Override
protected CompilerPass getProcessor(Compiler compiler) {
return new CrossModuleMethodMotion(
compiler, new CrossModuleMethodMotion.IdGenerator(), canMoveExterns);
}
@Override
public void setUp() {
super.enableLineNumberCheck(true);
canMoveExterns = false;
}
public void testMovePrototypeMethod1() {
testSame(createModuleChain(
"function Foo() {}" +
"Foo.prototype.bar = function() {};",
// Module 2
"(new Foo).bar()"));
canMoveExterns = true;
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.bar = function() {};",
// Module 2
"(new Foo).bar()"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.bar = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.bar = JSCompiler_unstubMethod(0, function() {});" +
"(new Foo).bar()"
});
}
public void testMovePrototypeMethod2() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype = { method: function() {} };",
// Module 2
"(new Foo).method()"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype = { method: JSCompiler_stubMethod(0) };",
// Module 2
"Foo.prototype.method = " +
" JSCompiler_unstubMethod(0, function() {});" +
"(new Foo).method()"
});
}
public void testMovePrototypeMethod3() {
testSame(createModuleChain(
"function Foo() {}" +
"Foo.prototype = { get method() {} };",
// Module 2
"(new Foo).method()"));
}
public void testMovePrototypeRecursiveMethod() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function() { this.baz(); };",
// Module 2
"(new Foo).baz()"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.baz = JSCompiler_unstubMethod(0, " +
" function() { this.baz(); });" +
"(new Foo).baz()"
});
}
public void testCantMovePrototypeProp() {
testSame(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = goog.nullFunction;",
// Module 2
"(new Foo).baz()"));
}
public void testMoveMethodsInRightOrder() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function() { return 1; };" +
"Foo.prototype.baz = function() { return 2; };",
// Module 2
"(new Foo).baz()"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(1);" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.baz = " +
"JSCompiler_unstubMethod(1, function() { return 1; });" +
"Foo.prototype.baz = " +
"JSCompiler_unstubMethod(0, function() { return 2; });" +
"(new Foo).baz()"
});
}
public void testMoveMethodsInRightOrder2() {
JSModule[] m = createModules(
"function Foo() {}" +
"Foo.prototype.baz = function() { return 1; };" +
"function Goo() {}" +
"Goo.prototype.baz = function() { return 2; };",
// Module 2, depends on 1
"",
// Module 3, depends on 2
"(new Foo).baz()",
// Module 4, depends on 3
"",
// Module 5, depends on 3
"(new Goo).baz()");
m[1].addDependency(m[0]);
m[2].addDependency(m[1]);
m[3].addDependency(m[2]);
m[4].addDependency(m[2]);
test(m,
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(1);" +
"function Goo() {}" +
"Goo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"",
// Module 3
"Foo.prototype.baz = " +
"JSCompiler_unstubMethod(1, function() { return 1; });" +
"Goo.prototype.baz = " +
"JSCompiler_unstubMethod(0, function() { return 2; });" +
"(new Foo).baz()",
// Module 4
"",
// Module 5
"(new Goo).baz()"
});
}
public void testMoveMethodsUsedInTwoModules() {
testSame(createModuleStar(
"function Foo() {}" +
"Foo.prototype.baz = function() {};",
// Module 2
"(new Foo).baz()",
// Module 3
"(new Foo).baz()"));
}
public void testMoveMethodsUsedInTwoModules2() {
JSModule[] modules = createModules(
"function Foo() {}" +
"Foo.prototype.baz = function() {};",
// Module 2
"", // a blank module in the middle
// Module 3
"(new Foo).baz() + 1",
// Module 4
"(new Foo).baz() + 2");
modules[1].addDependency(modules[0]);
modules[2].addDependency(modules[1]);
modules[3].addDependency(modules[1]);
test(modules,
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.baz = JSCompiler_unstubMethod(0, function() {});",
// Module 3
"(new Foo).baz() + 1",
// Module 4
"(new Foo).baz() + 2"
});
}
public void testTwoMethods() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function() {};",
// Module 2
"Foo.prototype.callBaz = function() { this.baz(); }",
// Module 3
"(new Foo).callBaz()"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(1);",
// Module 2
"Foo.prototype.callBaz = JSCompiler_stubMethod(0);",
// Module 3
"Foo.prototype.baz = JSCompiler_unstubMethod(1, function() {});" +
"Foo.prototype.callBaz = " +
" JSCompiler_unstubMethod(0, function() { this.baz(); });" +
"(new Foo).callBaz()"
});
}
public void testTwoMethods2() {
// if the programmer screws up the module order, we don't try to correct
// the mistake.
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function() {};",
// Module 2
"(new Foo).callBaz()",
// Module 3
"Foo.prototype.callBaz = function() { this.baz(); }"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"(new Foo).callBaz()",
// Module 3
"Foo.prototype.baz = JSCompiler_unstubMethod(0, function() {});" +
"Foo.prototype.callBaz = function() { this.baz(); };"
});
}
public void testGlobalFunctionsInGraph() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function() {};" +
"function x() { return (new Foo).baz(); }",
// Module 2
"x();"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);" +
"function x() { return (new Foo).baz(); }",
// Module 2
"Foo.prototype.baz = JSCompiler_unstubMethod(0, function() {});" +
"x();"
});
}
// Read of closure variable disables method motions.
public void testClosureVariableReads1() {
testSame(createModuleChain(
"function Foo() {}" +
"(function() {" +
"var x = 'x';" +
"Foo.prototype.baz = function() {x};" +
"})();",
// Module 2
"var y = new Foo(); y.baz();"));
}
// Read of global variable is fine.
public void testClosureVariableReads2() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.b1 = function() {" +
" var x = 1;" +
" Foo.prototype.b2 = function() {" +
" Foo.prototype.b3 = function() {" +
" x;" +
" }" +
" }" +
"};",
// Module 2
"var y = new Foo(); y.b1();",
// Module 3
"y = new Foo(); z.b2();",
// Module 4
"y = new Foo(); z.b3();"
),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.b1 = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.b1 = JSCompiler_unstubMethod(0, function() {" +
" var x = 1;" +
" Foo.prototype.b2 = function() {" +
" Foo.prototype.b3 = function() {" +
" x;" +
" }" +
" }" +
"});" +
"var y = new Foo(); y.b1();",
// Module 3
"y = new Foo(); z.b2();",
// Module 4
"y = new Foo(); z.b3();"
});
}
public void testClosureVariableReads3() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.b1 = function() {" +
" Foo.prototype.b2 = function() {" +
" var x = 1;" +
" Foo.prototype.b3 = function() {" +
" x;" +
" }" +
" }" +
"};",
// Module 2
"var y = new Foo(); y.b1();",
// Module 3
"y = new Foo(); z.b2();",
// Module 4
"y = new Foo(); z.b3();"
),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.b1 = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.b1 = JSCompiler_unstubMethod(0, function() {" +
" Foo.prototype.b2 = JSCompiler_stubMethod(1);" +
"});" +
"var y = new Foo(); y.b1();",
// Module 3
"Foo.prototype.b2 = JSCompiler_unstubMethod(1, function() {" +
" var x = 1;" +
" Foo.prototype.b3 = function() {" +
" x;" +
" }" +
"});" +
"y = new Foo(); z.b2();",
// Module 4
"y = new Foo(); z.b3();"
});
}
// Read of global variable is fine.
public void testNoClosureVariableReads1() {
test(createModuleChain(
"function Foo() {}" +
"var x = 'x';" +
"Foo.prototype.baz = function(){x};",
// Module 2
"var y = new Foo(); y.baz();"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"var x = 'x';" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.baz = JSCompiler_unstubMethod(0, function(){x});" +
"var y = new Foo(); y.baz();"
});
}
// Read of a local is fine.
public void testNoClosureVariableReads2() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function(){var x = 1;x};",
// Module 2
"var y = new Foo(); y.baz();"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.baz = JSCompiler_unstubMethod(" +
" 0, function(){var x = 1; x});" +
"var y = new Foo(); y.baz();"
});
}
// An anonymous inner function reading a closure variable is fine.
public void testInnerFunctionClosureVariableReads() {
test(createModuleChain(
"function Foo() {}" +
"Foo.prototype.baz = function(){var x = 1;" +
" return function(){x}};",
// Module 2
"var y = new Foo(); y.baz();"),
new String[] {
STUB_DECLARATIONS +
"function Foo() {}" +
"Foo.prototype.baz = JSCompiler_stubMethod(0);",
// Module 2
"Foo.prototype.baz = JSCompiler_unstubMethod(" +
" 0, function(){var x = 1; return function(){x}});" +
"var y = new Foo(); y.baz();"
});
}
public void testIssue600() {
testSame(
createModuleChain(
"var jQuery1 = (function() {\n" +
" var jQuery2 = function() {};\n" +
" var theLoneliestNumber = 1;\n" +
" jQuery2.prototype = {\n" +
" size: function() {\n" +
" return theLoneliestNumber;\n" +
" }\n" +
" };\n" +
" return jQuery2;\n" +
"})();\n",
"(function() {" +
" var div = jQuery1('div');" +
" div.size();" +
"})();"));
}
public void testIssue600b() {
testSame(
createModuleChain(
"var jQuery1 = (function() {\n" +
" var jQuery2 = function() {};\n" +
" jQuery2.prototype = {\n" +
" size: function() {\n" +
" return 1;\n" +
" }\n" +
" };\n" +
" return jQuery2;\n" +
"})();\n",
"(function() {" +
" var div = jQuery1('div');" +
" div.size();" +
"})();"));
}
public void testIssue600c() {
test(
createModuleChain(
"var jQuery2 = function() {};\n" +
"jQuery2.prototype = {\n" +
" size: function() {\n" +
" return 1;\n" +
" }\n" +
"};\n",
"(function() {" +
" var div = jQuery2('div');" +
" div.size();" +
"})();"),
new String[] {
STUB_DECLARATIONS +
"var jQuery2 = function() {};\n" +
"jQuery2.prototype = {\n" +
" size: JSCompiler_stubMethod(0)\n" +
"};\n",
"jQuery2.prototype.size=" +
" JSCompiler_unstubMethod(0,function(){return 1});" +
"(function() {" +
" var div = jQuery2('div');" +
" div.size();" +
"})();"
});
}
public void testIssue600d() {
test(
createModuleChain(
"var jQuery2 = function() {};\n" +
"(function() {" +
" jQuery2.prototype = {\n" +
" size: function() {\n" +
" return 1;\n" +
" }\n" +
" };\n" +
"})();",
"(function() {" +
" var div = jQuery2('div');" +
" div.size();" +
"})();"),
new String[] {
STUB_DECLARATIONS +
"var jQuery2 = function() {};\n" +
"(function() {" +
" jQuery2.prototype = {\n" +
" size: JSCompiler_stubMethod(0)\n" +
" };\n" +
"})();",
"jQuery2.prototype.size=" +
" JSCompiler_unstubMethod(0,function(){return 1});" +
"(function() {" +
" var div = jQuery2('div');" +
" div.size();" +
"})();"
});
}
public void testIssue600e() {
testSame(
createModuleChain(
"var jQuery2 = function() {};\n" +
"(function() {" +
" var theLoneliestNumber = 1;\n" +
" jQuery2.prototype = {\n" +
" size: function() {\n" +
" return theLoneliestNumber;\n" +
" }\n" +
" };\n" +
"})();",
"(function() {" +
" var div = jQuery2('div');" +
" div.size();" +
"})();"));
}
public void testPrototypeOfThisAssign() {
testSame(
createModuleChain(
"/** @constructor */" +
"function F() {}" +
"this.prototype.foo = function() {};",
"(new F()).foo();"));
}
}
|
