Write test for adding and removing authors

tests/functional/openlp_plugins/songs/test_db.py

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+# -*- coding: utf-8 -*-
+# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
+
+###############################################################################
+# OpenLP - Open Source Lyrics Projection                                      #
+# --------------------------------------------------------------------------- #
+# Copyright (c) 2008-2014 Raoul Snyman                                        #
+# Portions copyright (c) 2008-2014 Tim Bentley, Gerald Britton, Jonathan      #
+# Corwin, Samuel Findlay, Michael Gorven, Scott Guerrieri, Matthias Hub,      #
+# Meinert Jordan, Armin Köhler, Erik Lundin, Edwin Lunando, Brian T. Meyer.   #
+# Joshua Miller, Stevan Pettit, Andreas Preikschat, Mattias Põldaru,          #
+# Christian Richter, Philip Ridout, Simon Scudder, Jeffrey Smith,             #
+# Maikel Stuivenberg, Martin Thompson, Jon Tibble, Dave Warnock,              #
+# Frode Woldsund, Martin Zibricky, Patrick Zimmermann                         #
+# --------------------------------------------------------------------------- #
+# This program is free software; you can redistribute it and/or modify it     #
+# under the terms of the GNU General Public License as published by the Free  #
+# Software Foundation; version 2 of the License.                              #
+#                                                                             #
+# This program is distributed in the hope that it will be useful, but WITHOUT #
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       #
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for    #
+# more details.                                                               #
+#                                                                             #
+# You should have received a copy of the GNU General Public License along     #
+# with this program; if not, write to the Free Software Foundation, Inc., 59  #
+# Temple Place, Suite 330, Boston, MA 02111-1307 USA                          #
+###############################################################################
+"""
+This module contains tests for the db submodule of the Songs plugin.
+"""
+from unittest import TestCase
+from tests.functional import patch, MagicMock
+
+from openlp.plugins.songs.lib.db import Song, Author, AuthorType
+
+
+class TestDB(TestCase):
+    """
+    Test the functions in the :mod:`lib` module.
+    """
+    def setUp(self):
+        pass
+
+    def test_add_author(self):
+        """
+        Test adding an author to a song
+        """
+        # GIVEN: A song and an author
+        song = Song()
+        song.authors_songs = []
+        author = Author()
+        author.first_name = "Max"
+        author.last_name = "Mustermann"
+
+        # WHEN: We add an author to the song
+        song.add_author(author)
+
+        # THEN: The author should have been added with author_type=None
+        self.assertEqual(1, len(song.authors_songs))
+        self.assertEqual("Max", song.authors_songs[0].author.first_name)
+        self.assertEqual("Mustermann", song.authors_songs[0].author.last_name)
+        self.assertIsNone(song.authors_songs[0].author_type)
+
+    def test_add_author_with_type(self):
+        """
+        Test adding an author with a type specified to a song
+        """
+        # GIVEN: A song and an author
+        song = Song()
+        song.authors_songs = []
+        author = Author()
+        author.first_name = "Max"
+        author.last_name = "Mustermann"
+
+        # WHEN: We add an author to the song
+        song.add_author(author, AuthorType.Words)
+
+        # THEN: The author should have been added with author_type=None
+        self.assertEqual(1, len(song.authors_songs))
+        self.assertEqual("Max", song.authors_songs[0].author.first_name)
+        self.assertEqual("Mustermann", song.authors_songs[0].author.last_name)
+        self.assertEqual(AuthorType.Words ,song.authors_songs[0].author_type)
+
+    def test_remove_author(self):
+        """
+        Test removing an author from a song
+        """
+        # GIVEN: A song with an author
+        song = Song()
+        song.authors_songs = []
+        author = Author()
+        author.first_name = "Max"
+        author.last_name = "Mustermann"
+        song.add_author(author)
+
+        # WHEN: We remove the author
+        song.remove_author(author)
+
+        # THEN: It should have been removed
+        self.assertEqual(0, len(song.authors_songs))
+
+    def test_remove_author_with_type(self):
+        """
+        Test removing an author with a type specified from a song
+        """
+        # GIVEN: A song with two authors
+        song = Song()
+        song.authors_songs = []
+        author = Author()
+        author.first_name = "Max"
+        author.last_name = "Mustermann"
+        song.add_author(author)
+        song.add_author(author, AuthorType.Translation)
+
+        # WHEN: We remove the author with a certain type
+        song.remove_author(author, AuthorType.Translation)
+
+        # THEN: It should have been removed and the other author should still be there
+        self.assertEqual(1, len(song.authors_songs))
+        self.assertEqual(None ,song.authors_songs[0].author_type)