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/*
* Copyright 2011 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;
import com.google.javascript.rhino.Node;
/**
* Unit tests for {#link {@link OptimizeCalls}
*
*/
public class OptimizeCallsTest extends CompilerTestCase {
@Override
protected CompilerPass getProcessor(final Compiler compiler) {
final OptimizeCalls passes = new OptimizeCalls(compiler);
passes.addPass(new OptimizeReturns(compiler));
passes.addPass(new OptimizeParameters(compiler));
passes.addPass(new RemoveUnusedVars(compiler, true, false, true));
return new CompilerPass() {
@Override
public void process(Node externs, Node root) {
new PureFunctionIdentifier(compiler,
new SimpleDefinitionFinder(compiler)).process(externs, root);
passes.process(externs, root);
}
};
}
public void testRemovingReturnCallToFunctionWithUnusedParams() {
test("function foo() {var x; return x = bar(1)} foo(); function bar(x) {}",
"function foo() { bar(); return;} foo(); function bar() {}");
}
public void testNestingFunctionCallWithUnsedParams() {
test("function f1(x) { } function f2(x) { }" +
"function f3(x) { } function f4(x) { }" +
"f3(f1(f2()));",
"function f1() {f2()} function f2() { }" +
"function f3() {f1()} " +
"f3();"
);
}
public void testUnusedAssignOnFunctionWithUnusedParams() {
test("var foo = function(a){}; function bar(){var x;x = foo} bar(); foo(1)",
"var foo = function( ){}; function bar(){ } bar(); foo()");
}
}
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