我看到记录器已在 Powermock 或某种需要记录器的重写构造函数的帮助下被模拟。
在整个代码中都使用记录器,这不是仅使用 mockito 的简单方法吗?忽略调用或模拟它的某种方式 - 我不想验证任何消息,只是想避免 Null Pointer 异常
我是模拟框架的新手,所以我想使用 Jmockit 而不是混合和匹配两个库 - 到目前为止避免使用 jomockit 的唯一原因 - 它太强大了,很容易被滥用!
在我认为在某个级别登录非常重要的情况下,我会使用日志验证。这就是我使用 Mockito 的方式:
实用类
public final class LoggingTestUtil {
private LoggingTestUtil() {
}
public static void setupLoggingMock(Logger logger, Appender<ILoggingEvent> appender) {
logger = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME);
when(appender.getName()).thenReturn("MOCK");
logger.addAppender(appender);
}
public static void verifyLogAppended(Appender<ILoggingEvent> appender, final String loggedString) {
verify(appender).doAppend(argThat(new ArgumentMatcher<LoggingEvent>() {
@Override
public boolean matches(final Object argument) {
return ((LoggingEvent) argument).getMessage().contains(loggedString);
}
}));
}
public static void verifyLogAppendedAtLevel(Appender<ILoggingEvent> appender, final Level level) {
verify(appender).doAppend(argThat(new ArgumentMatcher<LoggingEvent>() {
@Override
public boolean matches(final Object argument) {
return ((LoggingEvent) argument).getLevel().equals(level);
}
}));
}
public static void verifyLogAppendedAtLevel(Appender<ILoggingEvent> appender, final Level level, final String loggedString) {
verify(appender).doAppend(argThat(new ArgumentMatcher<LoggingEvent>() {
@Override
public boolean matches(final Object argument) {
LoggingEvent event = (LoggingEvent) argument;
return event.getLevel().equals(level) && event.getMessage().contains(loggedString);
}
}));
}
}
在测试班
private static Logger root;
@Mock
private static Appender<ILoggingEvent> mockAppender; // used to test that logging occurs
@Test
public final void testSomething(){
LoggingTestUtil.setupLoggingMocks(root, mockAppender);
underTest.doSomethingBad();
LoggingTestUtil.verifyLogAppendedAtLevel(mockAppender, Level.ERROR, "bad thing");
}