/*
* Copyright 2009 Google Inc.
*
* 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.template.soy.basicfunctions;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Sets;
import com.google.template.soy.data.SoyData;
import com.google.template.soy.data.restricted.IntegerData;
import com.google.template.soy.javasrc.restricted.JavaExpr;
import com.google.template.soy.jssrc.restricted.JsExpr;
import junit.framework.TestCase;
import java.util.Set;
/**
* Unit tests for RandomIntFunction.
*
* @author Kai Huang
*/
public class RandomIntFunctionTest extends TestCase {
public void testComputeForTofu() {
RandomIntFunction randomIntFunction = new RandomIntFunction();
SoyData arg = IntegerData.ONE;
assertEquals(IntegerData.ZERO,
randomIntFunction.computeForTofu(ImmutableList.of(arg)));
arg = IntegerData.forValue(3);
Set<Integer> seenResults = Sets.newHashSetWithExpectedSize(3);
for (int i = 0; i < 100; i++) {
int result = randomIntFunction.computeForTofu(ImmutableList.of(arg)).integerValue();
assertTrue(0 <= result && result <= 2);
seenResults.add(result);
if (seenResults.size() == 3) {
break;
}
}
assertEquals(3, seenResults.size());
}
public void testComputeForJsSrc() {
RandomIntFunction randomIntFunction = new RandomIntFunction();
JsExpr argExpr = new JsExpr("JS_CODE", Integer.MAX_VALUE);
assertEquals(new JsExpr("Math.floor(Math.random() * JS_CODE)", Integer.MAX_VALUE),
randomIntFunction.computeForJsSrc(ImmutableList.of(argExpr)));
}
public void testComputeForJavaSrc() {
RandomIntFunction randomIntFunction = new RandomIntFunction();
JavaExpr argExpr = new JavaExpr("JAVA_CODE", SoyData.class, Integer.MAX_VALUE);
assertEquals(
new JavaExpr(
"com.google.template.soy.data.restricted.IntegerData.forValue(" +
"(int) Math.floor(Math.random() * JAVA_CODE.integerValue()))",
IntegerData.class, Integer.MAX_VALUE),
randomIntFunction.computeForJavaSrc(ImmutableList.of(argExpr)));
}
}