openlp/tests/functional/openlp_plugins/songusage/test_songusage.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) 2008-2016 OpenLP Developers                                   #
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"""
This module contains tests for the Songusage plugin.
"""
from unittest import TestCase
from unittest.mock import MagicMock, patch

from openlp.core import Registry
from openlp.plugins.songusage.lib import upgrade
from openlp.plugins.songusage.lib.db import init_schema
from openlp.plugins.songusage.songusageplugin import SongUsagePlugin


class TestSongUsage(TestCase):

    def setUp(self):
        Registry.create()

    def test_about_text(self):
        """
        Test the about text of the song usage plugin
        """
        # GIVEN: The SongUsagePlugin
        # WHEN: Retrieving the about text
        # THEN: about() should return a string object
        self.assertIsInstance(SongUsagePlugin.about(), str)
        # THEN: about() should return a non-empty string
        self.assertNotEquals(len(SongUsagePlugin.about()), 0)
        self.assertNotEquals(len(SongUsagePlugin.about()), 0)

    @patch('openlp.plugins.songusage.songusageplugin.Manager')
    def test_song_usage_init(self, MockedManager):
        """
        Test the initialisation of the SongUsagePlugin class
        """
        # GIVEN: A mocked database manager
        mocked_manager = MagicMock()
        MockedManager.return_value = mocked_manager

        # WHEN: The SongUsagePlugin class is instantiated
        song_usage = SongUsagePlugin()

        # THEN: It should be initialised correctly
        MockedManager.assert_called_with('songusage', init_schema, upgrade_mod=upgrade)
        self.assertEqual(mocked_manager, song_usage.manager)
        self.assertFalse(song_usage.song_usage_active)

    @patch('openlp.plugins.songusage.songusageplugin.Manager')
    def test_check_pre_conditions(self, MockedManager):
        """
        Test that check_pre_condition returns true for valid manager session
        """
        # GIVEN: A mocked database manager
        mocked_manager = MagicMock()
        mocked_manager.session = MagicMock()
        MockedManager.return_value = mocked_manager
        song_usage = SongUsagePlugin()

        # WHEN: The calling check_pre_conditions
        ret = song_usage.check_pre_conditions()

        # THEN: It should return True
        self.assertTrue(ret)

    @patch('openlp.plugins.songusage.songusageplugin.Manager')
    def test_toggle_song_usage_state(self, MockedManager):
        """
        Test that toggle_song_usage_state does toggle song_usage_state
        """
        # GIVEN: A SongUsagePlugin
        song_usage = SongUsagePlugin()
        song_usage.set_button_state = MagicMock()
        song_usage.song_usage_active = True

        # WHEN: calling toggle_song_usage_state
        song_usage.toggle_song_usage_state()

        # THEN: song_usage_state should have been toogled
        self.assertFalse(song_usage.song_usage_active)