/*
 * 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;

import com.google.javascript.rhino.Node;

import junit.framework.TestCase;


/**
 * Unit test for {@link InlineCostEstimator}.
 * @author johnlenz@google.com (John Lenz)
 */
public final class InlineCostEstimatorTest extends TestCase {

  static Node parse(String js) {
    Compiler compiler = new Compiler();
    Node n = compiler.parseTestCode(js);
    assertEquals(0, compiler.getErrorCount());
    return n;
  }

  static String minimize(String js) {
    CompilerOptions options = new CompilerOptions();
    options.setLineLengthThreshold(Integer.MAX_VALUE);
    return new CodePrinter.Builder(parse(js)).
        setCompilerOptions(options).
        build();
  }

  static long cost(String js) {
    return InlineCostEstimator.getCost(parse(js));
  }

  public void testCost() {
    checkCost("1", "1");
    checkCost("true", "1");
    checkCost("false", "1");
    checkCost("a", "xx");
    checkCost("a + b", "xx+xx");
    checkCost("foo()", "xx()");
    checkCost("foo(a,b)", "xx(xx,xx)");
    checkCost("10 + foo(a,b)", "0+xx(xx,xx)");
    checkCost("1 + foo(a,b)", "1+xx(xx,xx)");
    checkCost("a ? 1 : 0", "xx?1:0");
    checkCost("a.b", "xx.xx");
    checkCost("new Obj()", "new xx");
    checkCost("function a() {return \"monkey\"}",
              "function xx(){return\"monkey\"}");
  }

  private void checkCost(String source, String example) {

    // The example string should have been minified already.
    assertEquals(minimize(example), example);

    // cost estimate should be the same as the length of the example string.
    assertEquals(example.length(), cost(source));
  }
}

@@ -646,16 +646,73 @@
 scomp;%0A%0A
+import static com.google.common.truth.Truth.assertThat;%0A%0A
 import c
@@ -779,17 +779,16 @@
 tCase;%0A%0A
-%0A
 /**%0A * U
@@ -829,16 +829,19 @@
 mator%7D.%0A
+ *%0A
  * @auth
@@ -1070,18 +1070,13 @@
 sert
-Equals(0, 
+That(
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@@ -1092,15 +1092,21 @@
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+s()).isEmpty(
 );%0A 
@@ -2138,22 +2138,39 @@
   assert
+That(example).is
 Equal
-s
+To
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@@ -2183,17 +2183,8 @@
 ple)
-, example
 );%0A%0A
@@ -2274,14 +2274,36 @@
 sert
+That(cost(source)).is
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-s
+To
 (exa
@@ -2319,22 +2319,8 @@
 th()
-, cost(source)
 );%0A 

Truthify a test.