| /** |
| * Copyright (c) 2004-2013 QOS.ch, Copyright (C) 2015 Google Inc. |
| * All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| package org.slf4j.helpers; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.fail; |
| |
| import java.lang.Thread.UncaughtExceptionHandler; |
| import java.util.Map; |
| |
| import org.junit.After; |
| import org.junit.Test; |
| import org.slf4j.spi.MDCAdapter; |
| |
| /** |
| * Tests for {@link BasicMDCAdapter} |
| * |
| * @author Lukasz Cwik |
| */ |
| public class MDCAdapterTestBase { |
| |
| protected MDCAdapter mdc = instantiateMDC(); |
| |
| |
| |
| protected MDCAdapter instantiateMDC() { |
| return new BasicMDCAdapter(); |
| } |
| |
| // leave MDC clean |
| @After |
| public void tearDown() throws Exception { |
| mdc.clear(); |
| } |
| |
| @Test |
| public void testSettingAndGettingWithMDC() { |
| assertNull(mdc.get("testKey")); |
| mdc.put("testKey", "testValue"); |
| assertEquals(mdc.get("testKey"), "testValue"); |
| } |
| |
| @Test |
| public void testOverwritingAKeyInMDC() { |
| assertNull(mdc.get("testKey")); |
| mdc.put("testKey", "testValue"); |
| mdc.put("testKey", "differentTestValue"); |
| assertEquals(mdc.get("testKey"), "differentTestValue"); |
| } |
| |
| @Test |
| public void testGetCopyOfContextMapFromMDC() { |
| mdc.put("testKey", "testValue"); |
| Map<String, String> copy = mdc.getCopyOfContextMap(); |
| mdc.put("anotherTestKey", "anotherTestValue"); |
| assertFalse(copy.size() == mdc.getCopyOfContextMap().size()); |
| } |
| |
| @Test |
| public void testMDCInheritsValuesFromParentThread() throws Exception { |
| mdc.put("parentKey", "parentValue"); |
| runAndWait(() -> { |
| mdc.put("childKey", "childValue"); |
| assertEquals("parentValue", mdc.get("parentKey")); |
| }); |
| } |
| |
| @Test |
| public void testMDCDoesntGetValuesFromChildThread() throws Exception { |
| mdc.put("parentKey", "parentValue"); |
| runAndWait(() -> mdc.put("childKey", "childValue")); |
| assertEquals("parentValue", mdc.get("parentKey")); |
| assertNull(mdc.get("childKey")); |
| } |
| |
| |
| @Test |
| public void testInvokingSetContextMap_WithANullMap_SLF4J_414() { |
| mdc.setContextMap(null); |
| } |
| |
| @Test |
| public void testMDCChildThreadCanOverwriteParentThread() throws Exception { |
| mdc.put("sharedKey", "parentValue"); |
| runAndWait(() -> { |
| assertEquals("parentValue", mdc.get("sharedKey")); |
| mdc.put("sharedKey", "childValue"); |
| assertEquals("childValue", mdc.get("sharedKey")); |
| }); |
| assertEquals("parentValue", mdc.get("sharedKey")); |
| } |
| |
| private void runAndWait(Runnable runnable) { |
| RecordingExceptionHandler handler = new RecordingExceptionHandler(); |
| Thread thread = new Thread(runnable); |
| thread.setUncaughtExceptionHandler(handler); |
| thread.start(); |
| try { |
| thread.join(); |
| } catch (Throwable t) { |
| fail("Unexpected failure in child thread:" + t.getMessage()); |
| } |
| assertFalse(handler.getMessage(), handler.hadException()); |
| } |
| |
| /** A {@link UncaughtExceptionHandler} that records whether the thread threw an exception. */ |
| private static class RecordingExceptionHandler implements UncaughtExceptionHandler { |
| private Throwable exception; |
| |
| @Override |
| public void uncaughtException(Thread t, Throwable e) { |
| exception = e; |
| } |
| |
| boolean hadException() { |
| return exception != null; |
| } |
| |
| String getMessage() { |
| return exception != null ? exception.getMessage() : ""; |
| } |
| } |
| } |