big-data/hadoop
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

HADOOP-13470. GenericTestUtils$LogCapturer is flaky. (Contributed by Mingliang Liu)

Browse Source
This commit is contained in:
Mingliang Liu 2016-08-15 20:24:54 -07:00
parent ef55fe1716
commit 9336a0495f
2 changed files with 56 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/GenericTestUtils.java
View File

@ -42,10 +42,10 @@
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.util.StringUtils;
import org.apache.hadoop.util.Time;
import org.apache.log4j.Layout;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.log4j.WriterAppender;
import org.junit.Assert;
import org.junit.Assume;
@ -278,16 +278,17 @@ public static class LogCapturer {
public static LogCapturer captureLogs(Log l) {
Logger logger = ((Log4JLogger)l).getLogger();
LogCapturer c = new LogCapturer(logger);
return c;
return new LogCapturer(logger);
}
public static LogCapturer captureLogs(org.slf4j.Logger logger) {
return new LogCapturer(toLog4j(logger));
}
private LogCapturer(Logger logger) {
this.logger = logger;
Layout layout = Logger.getRootLogger().getAppender("stdout").getLayout();
WriterAppender wa = new WriterAppender(layout, sw);
logger.addAppender(wa);
this.appender = new WriterAppender(new PatternLayout(), sw);
logger.addAppender(appender);
}
public String getOutput() {
@ -296,7 +297,6 @@ public String getOutput() {
public void stopCapturing() {
logger.removeAppender(appender);
}
public void clearOutput() {
@ -304,7 +304,6 @@ public void clearOutput() {
}
}
/**
* Mockito answer helper that triggers one latch as soon as the
* method is called, then waits on another before continuing.

44
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/TestGenericTestUtils.java
View File

@ -18,8 +18,16 @@
package org.apache.hadoop.test;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.junit.Assert.assertTrue;
public class TestGenericTestUtils extends GenericTestUtils {
@Test
@ -75,4 +83,40 @@ public String toString() {
}
}
@Test(timeout = 10000)
public void testLogCapturer() {
final Log log = LogFactory.getLog(TestGenericTestUtils.class);
LogCapturer logCapturer = LogCapturer.captureLogs(log);
final String infoMessage = "info message";
// test get output message
log.info(infoMessage);
assertTrue(logCapturer.getOutput().endsWith(
String.format(infoMessage + "%n")));
// test clear output
logCapturer.clearOutput();
assertTrue(logCapturer.getOutput().isEmpty());
// test stop capturing
logCapturer.stopCapturing();
log.info(infoMessage);
assertTrue(logCapturer.getOutput().isEmpty());
}
@Test(timeout = 10000)
public void testLogCapturerSlf4jLogger() {
final Logger logger = LoggerFactory.getLogger(TestGenericTestUtils.class);
LogCapturer logCapturer = LogCapturer.captureLogs(logger);
final String infoMessage = "info message";
// test get output message
logger.info(infoMessage);
assertTrue(logCapturer.getOutput().endsWith(
String.format(infoMessage + "%n")));
// test clear output
logCapturer.clearOutput();
assertTrue(logCapturer.getOutput().isEmpty());
// test stop capturing
logCapturer.stopCapturing();
logger.info(infoMessage);
assertTrue(logCapturer.getOutput().isEmpty());
}
}