openlp/tests/interfaces/openlp_core/common/test_utils.py

# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4

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# OpenLP - Open Source Lyrics Projection                                      #
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# Copyright (c) 2008-2017 OpenLP Developers                                   #
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"""
Functional tests to test the AppLocation class and related methods.
"""
from unittest import TestCase

from openlp.core.common import is_not_image_file
from openlp.core.common.path import Path
from tests.utils.constants import TEST_RESOURCES_PATH
from tests.helpers.testmixin import TestMixin


class TestUtils(TestCase, TestMixin):
    """
    A test suite to test out various methods around the Utils functions.
    """

    def setUp(self):
        """
        Some pre-test setup required.
        """
        self.setup_application()

    def test_is_not_image_empty(self):
        """
        Test the method handles an empty string
        """
        # Given and empty string
        file_name = ""

        # WHEN testing for it
        result = is_not_image_file(file_name)

        # THEN the result is false
        assert result is True, 'The missing file test should return True'

    def test_is_not_image_with_image_file(self):
        """
        Test the method handles an image file
        """
        # Given and empty string
        file_name = Path(TEST_RESOURCES_PATH, 'church.jpg')

        # WHEN testing for it
        result = is_not_image_file(file_name)

        # THEN the result is false
        assert result is False, 'The file is present so the test should return False'

    def test_is_not_image_with_none_image_file(self):
        """
        Test the method handles a non image file
        """
        # Given and empty string
        file_name = Path(TEST_RESOURCES_PATH, 'serviceitem_custom_1.osj')

        # WHEN testing for it
        result = is_not_image_file(file_name)

        # THEN the result is false
        assert result is True, 'The file is not an image file so the test should return True'