使用log4j2和mockito声明日志消息 [英] asserting log messages with log4j2 and mockito
问题描述
我最近开始使用log4j2,我正在尝试在单元测试中测试我的日志消息。对于log4j1x api来说这非常简单,但现在使用log4j2它无法正常工作。我正在使用JUnit 4和Mockito。我的想法是创建一个模拟appender,然后从append方法捕获Log事件并验证消息。
I recently started used log4j2 and i am trying to test my log messages in my unit test. This was pretty straightforward with the log4j1x api, but now with log4j2 its not working. I am using JUnit 4 and Mockito. My idea is to create a mock appender and then capture the Log event from the append method and verify the message.
@Mock
Appender mockAppender;
@Captor
private ArgumentCaptor<LogEvent> logEvent;
在我的@Before方法中,我有以下内容
In my @Before method i have the following
LoggerContext ctx = (LoggerContext)LogManager.getContext();
Configuration config = ctx.getConfiguration();
ctx.getConfiguration().addAppender(mockAppender);
LoggerConfig rootConfig = config.getLoggerConfig(LogManager.ROOT_LOGGER_NAME);
rootConfig.setLevel(Level.DEBUG);
rootConfig.addAppender(mockAppender, Level.DEBUG, null);
ctx.updateLoggers();
在我的测试方法中
logger.error("test");
verify(mockAppender, times(1)).append(logEvent.capture());
我失败了,说永远不会调用append方法。
有人对此有什么想法吗?谢谢
I am getting a failure saying the append method is never invoked. Anybody has any ideas on this? Thanks
推荐答案
mockAppender只是一个模拟对象。如果你没有在@Before方法中跟踪行,那么没什么可行的。
mockAppender is just a mock object. Nothing to work if you haven't following lines in your @Before method.
Mockito.reset(mockAppender);
Mockito.when(mockAppender.getName()).thenReturn("MockAppender");
Mockito.when(mockAppender.isStarted()).thenReturn(true);
Mockito.when(mockAppender.isStopped()).thenReturn(false);
就我而言,它对我有用。
In my case, it works for me.
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