| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * 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 libcore.java.lang; |
| |
| import static org.junit.Assert.assertArrayEquals; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNotEquals; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class ErrorTest { |
| |
| @Test |
| public void withNonWritableStackTrace_getStackTraceIsEmpty() { |
| Error error = new TestError("message", null /* cause */, |
| false /* enableSuppression */, |
| false /* writableStackTrace */); |
| |
| assertEquals(0, error.getStackTrace().length); |
| } |
| |
| @Test |
| public void withWritableStackTrace_nonEmptyGetStackTrace() { |
| Error error = new TestError("message", null /* cause */, |
| false /* enableSuppression */, |
| true /* writableStackTrace */); |
| |
| assertNotEquals(0, error.getStackTrace().length); |
| |
| StackTraceElement topStackTraceElement = error.getStackTrace()[0]; |
| assertEquals("withWritableStackTrace_nonEmptyGetStackTrace", |
| topStackTraceElement.getMethodName()); |
| } |
| |
| @Test |
| public void whenSuppressionDisabled_addSuppressHasNoEffect() { |
| Error error = new TestError("Message", null, false /* enableSuppression */, true); |
| |
| assertEquals(0, error.getSuppressed().length); |
| error.addSuppressed(new Exception("suppressed exception")); |
| assertEquals(0, error.getSuppressed().length); |
| } |
| |
| @Test |
| public void whenSuppressionEnabled_addsSuppressed() { |
| Error error = new TestError("message", null /* cause */, true /* enableSuppression */, |
| true /* writableStackTrace */); |
| |
| assertEquals(0, error.getSuppressed().length); |
| |
| Exception suppressed = new Exception("suppressed"); |
| error.addSuppressed(suppressed); |
| assertArrayEquals(new Throwable[] {suppressed}, error.getSuppressed()); |
| } |
| |
| |
| private static final class TestError extends Error { |
| protected TestError(String message, Throwable cause, boolean enableSuppression, |
| boolean writableStackTrace) { |
| super(message, cause, enableSuppression, writableStackTrace); |
| } |
| } |
| } |