74 lines
2.2 KiB
Java
74 lines
2.2 KiB
Java
/*
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* Copyright 2008 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.javascript.rhino.Node;
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import junit.framework.TestCase;
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/**
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* Unit test for {@link InlineCostEstimator}.
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* @author johnlenz@google.com (John Lenz)
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*/
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public class InlineCostEstimatorTest extends TestCase {
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static Node parse(String js) {
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Compiler compiler = new Compiler();
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Node n = compiler.parseTestCode(js);
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assertEquals(0, compiler.getErrorCount());
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return n;
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}
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static String minimize(String js) {
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CompilerOptions options = new CompilerOptions();
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options.setLineLengthThreshold(Integer.MAX_VALUE);
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return new CodePrinter.Builder(parse(js)).
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setCompilerOptions(options).
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build();
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}
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static long cost(String js) {
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return InlineCostEstimator.getCost(parse(js));
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}
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public void testCost() {
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checkCost("1", "1");
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checkCost("true", "1");
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checkCost("false", "1");
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checkCost("a", "xx");
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checkCost("a + b", "xx+xx");
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checkCost("foo()", "xx()");
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checkCost("foo(a,b)", "xx(xx,xx)");
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checkCost("10 + foo(a,b)", "0+xx(xx,xx)");
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checkCost("1 + foo(a,b)", "1+xx(xx,xx)");
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checkCost("a ? 1 : 0", "xx?1:0");
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checkCost("a.b", "xx.xx");
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checkCost("new Obj()", "new xx");
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checkCost("function a() {return \"monkey\"}",
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"function xx(){return\"monkey\"}");
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}
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private void checkCost(String source, String example) {
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// The example string should have been minified already.
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assertEquals(minimize(example), example);
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// cost estimate should be the same as the length of the example string.
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assertEquals(example.length(), cost(source));
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}
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}
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