""" Package to test the openlp.core.lib.uistrings package. """ from unittest import TestCase from openlp.core.lib import UiStrings class TestUiStrings(TestCase): def check_same_instance_test(self): """ Test the UiStrings class - we always should have only one instance of the UiStrings class. """ # WHEN: Create two instances of the UiStrings class. first_instance = UiStrings() second_instance = UiStrings() # THEN: Check if the instances are the same. assert first_instance is second_instance, "They should be the same instance!"