/*
* Copyright 2016 Google Inc. All Rights Reserved.
*
* 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.errorprone.bugpatterns;
import com.google.errorprone.CompilationTestHelper;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** {@link RandomModInteger}Test */
@RunWith(JUnit4.class)
public class RandomModIntegerTest {
private CompilationTestHelper compilationHelper;
@Before
public void setUp() {
compilationHelper = CompilationTestHelper.newInstance(RandomModInteger.class, getClass());
}
@Test
public void positive() throws Exception {
compilationHelper
.addSourceLines(
"Test.java",
"import java.util.Random;",
"class Test {",
" public static void main(String[] args) {",
" Random r = new Random();",
" // BUG: Diagnostic contains:",
" System.err.println(r.nextInt() % 100);",
" }",
"}")
.doTest();
}
@Test
public void negative() throws Exception {
compilationHelper
.addSourceLines(
"Test.java",
"import java.util.Random;",
"class Test {",
" public static void main(String[] args) {",
" Random r = new Random();",
" System.err.println(r.nextInt(100));",
" }",
"}")
.doTest();
}
}