@Test public void testE() {

	// Arrange:
	final Logger mockLogger = mock(Logger.class);
	FragmentsLogging.setLogger(mockLogger);
	// Act:
	FragmentsLogging.e(LOG_TAG, "message.error");
	FragmentsLogging.e(LOG_TAG, "message.error", null);
	// Assert:
	verify(mockLogger).e(LOG_TAG, "message.error");
	verify(mockLogger).e(LOG_TAG, "message.error", null);
	verifyNoMoreInteractions(mockLogger);
}