Mock implementation of $log
that gathers all logged messages in arrays
(one array per logging level). These arrays are exposed as logs
property of each of the
level-specific log function, e.g. for level error
the array is exposed as $log.error.logs
.
reset();
Reset all of the logging arrays to empty.
assertEmpty();
Assert that all of the logging methods have no logged messages. If any messages are present, an exception is thrown.