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Assert log events in logback
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private final static Set<ILoggingEvent> loggingEvents = [] as Set | |
private void reset() { | |
loggingEvents.clear() | |
initializeMockLogAppender(); | |
} | |
public void assertOneErrorLogEvent(String expectedMessage) { | |
assert loggingEvents.size() == 1 | |
assert loggingEvents.first().getThrowableProxy().message == expectedMessage | |
} | |
private void initializeMockLogAppender() { | |
final appender = new MockAppender(Level.ERROR, | |
[SomeClass.class.name, SomeOtherClass.class.name]) | |
final rootLogger = (Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME); | |
appender.setContext(rootLogger.getLoggerContext()) | |
appender.start() | |
rootLogger.addAppender(appender); | |
} | |
private static class MockAppender extends AppenderBase<ILoggingEvent> { | |
private final Level levelFilter; | |
private final List<String> loggerNameFilter; | |
MockAppender(Level levelFilter, List<String> loggerNameFilter) { | |
this.levelFilter = levelFilter | |
this.loggerNameFilter = loggerNameFilter | |
} | |
@Override | |
protected void append(final ILoggingEvent loggingEvent) { | |
if (loggingEvent.level == levelFilter && loggerNameFilter.contains(loggingEvent.getLoggerName())) { | |
loggingEvents.add(loggingEvent); | |
} | |
} | |
} |
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