/*
* Copyright 2017 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.BugCheckerRefactoringTestHelper;
import java.io.IOException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** {@link TestExceptionChecker}Test */
@RunWith(JUnit4.class)
public class TestExceptionCheckerTest {
private final BugCheckerRefactoringTestHelper testHelper =
BugCheckerRefactoringTestHelper.newInstance(new TestExceptionChecker(), getClass());
@Test
public void positive() throws IOException {
testHelper
.addInputLines(
"in/ExceptionTest.java",
"import static com.google.common.truth.Truth.assertThat;",
"import java.io.IOException;",
"import java.nio.file.*;",
"import org.junit.Test;",
"class ExceptionTest {",
" @Test(expected = IOException.class, timeout = 0L)",
" public void test() throws Exception {",
" Path p = Paths.get(\"NOSUCH\");",
" Files.readAllBytes(p);",
" Files.readAllBytes(p);",
" assertThat(Files.exists(p)).isFalse();",
" }",
"}")
.addOutputLines(
"out/ExceptionTest.java",
"import static com.google.common.truth.Truth.assertThat;",
"import static org.junit.Assert.assertThrows;",
"import java.io.IOException;",
"import java.nio.file.*;",
"import org.junit.Test;",
"class ExceptionTest {",
" @Test(timeout = 0L)",
" public void test() throws Exception {",
" Path p = Paths.get(\"NOSUCH\");",
" Files.readAllBytes(p);",
" assertThrows(IOException.class, () -> Files.readAllBytes(p));",
" assertThat(Files.exists(p)).isFalse();",
" }",
"}")
.doTest();
}
@Test
public void positive_markerException() throws IOException {
testHelper
.addInputLines(
"in/ExceptionTest.java",
"import static com.google.common.truth.Truth.assertThat;",
"import java.io.IOException;",
"import java.nio.file.*;",
"import org.junit.Test;",
"class ExceptionTest {",
" @Test(expected = IOException.class)",
" public void test() throws Exception {",
" Path p = Paths.get(\"NOSUCH\");",
" Files.readAllBytes(p);",
" assertThat(Files.exists(p)).isFalse();",
" }",
"}")
.addOutputLines(
"out/ExceptionTest.java",
"import static com.google.common.truth.Truth.assertThat;",
"import static org.junit.Assert.assertThrows;",
"import java.io.IOException;",
"import java.nio.file.*;",
"import org.junit.Test;",
"class ExceptionTest {",
" @Test",
" public void test() throws Exception {",
" Path p = Paths.get(\"NOSUCH\");",
" assertThrows(IOException.class, () -> Files.readAllBytes(p));",
" assertThat(Files.exists(p)).isFalse();",
" }",
"}")
.doTest();
}
@Test
public void negative() throws IOException {
testHelper
.addInputLines(
"in/ExceptionTest.java",
"import java.io.IOException;",
"import java.nio.file.*;",
"import org.junit.Test;",
"class ExceptionTest {",
" @Test(expected = IOException.class)",
" public void test() throws Exception {",
" Files.readAllBytes(Paths.get(\"NOSUCH\"));",
" }",
"}")
.expectUnchanged()
.doTest();
}
}