### Question:
SystemUserNotificationFilter implements NotificationFilter, ToggleableNotificationFilter { @Override public boolean matchesPreference(NotificationPreference preference) { return false; }  @Override FilterPolicy filterEvent(Event event, DocumentReference user,
            Collection<NotificationFilterPreference> filterPreferences, NotificationFormat format); @Override boolean matchesPreference(NotificationPreference preference); @Override ExpressionNode filterExpression(DocumentReference user,
            Collection<NotificationFilterPreference> filterPreferences, NotificationPreference preference); @Override ExpressionNode filterExpression(DocumentReference user,
            Collection<NotificationFilterPreference> filterPreferences,
            NotificationFilterType type, NotificationFormat format); @Override String getName(); static final String FILTER_NAME; }### Answer:
@Test public void matchesPreference() throws Exception { assertFalse(mocker.getComponentUnderTest().matchesPreference(mock(NotificationPreference.class))); }