/*
* Copyright 2014 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;
@RunWith(JUnit4.class)
public class InputStreamSlowMultibyteReadTest {
private CompilationTestHelper compilationHelper;
@Before
public void setUp() {
compilationHelper =
CompilationTestHelper.newInstance(InputStreamSlowMultibyteRead.class, getClass());
}
@Test
public void doingItRight() {
compilationHelper
.addSourceLines(
"TestClass.java",
"class TestClass extends java.io.InputStream {",
" byte[] buf = new byte[42];",
" public int read(byte[] b, int a, int c) { return 0; }",
" public int read() { return buf[0]; }",
"}")
.doTest();
}
@Test
public void basic() throws Exception {
compilationHelper
.addSourceLines(
"TestClass.java",
"class TestClass extends java.io.InputStream {",
" byte[] buf = new byte[42];",
" // BUG: Diagnostic contains:",
" public int read() { return buf[0]; }",
"}")
.doTest();
}
@Test
public void dummyStreamIgnored() {
compilationHelper
.addSourceLines(
"TestClass.java",
"class TestClass extends java.io.InputStream {",
" public int read() { return 0; }",
"}")
.doTest();
}
// Here, the superclass still can't effectively multibyte-read without the underlying
// read() method.
@Test
public void inherited() {
compilationHelper
.addSourceLines(
"Super.java",
"abstract class Super extends java.io.InputStream {",
" public int read(byte[] b, int a, int c) { return 0; }",
"}")
.addSourceLines(
"TestClass.java",
"class TestClass extends Super {",
" byte[] buf = new byte[42];",
" // BUG: Diagnostic contains:",
" public int read() { return buf[0]; }",
"}")
.doTest();
}
@Test
public void junit3TestIgnored() {
compilationHelper
.addSourceLines(
"javatests/TestClass.java",
"class TestClass extends junit.framework.TestCase {",
" static class SomeStream extends java.io.InputStream {",
" byte[] buf = new byte[42];",
" public int read() { return buf[0]; }",
"}}")
.doTest();
}
@Test
public void junit4TestIgnored() {
compilationHelper
.addSourceLines(
"javatests/TestClass.java",
"@org.junit.runner.RunWith(org.junit.runners.JUnit4.class)",
"class TestClass {",
" static class SomeStream extends java.io.InputStream {",
" byte[] buf = new byte[42];",
" public int read() { return buf[0]; }",
"}}")
.doTest();
}
}