openlp/tests/helpers/songfileimport.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) 2008-2018 OpenLP Developers                                   #
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"""
The :mod:`songfileimporthelper` modules provides a helper class and methods to easily enable testing the import of
song files from third party applications.
"""
import json
import logging
from unittest import TestCase
from unittest.mock import MagicMock, patch, call

from openlp.core.common.registry import Registry

log = logging.getLogger(__name__)


class SongImportTestHelper(TestCase):
    """
    This class is designed to be a helper class to reduce repetition when testing the import of song files.
    """
    def __init__(self, *args, **kwargs):
        super(SongImportTestHelper, self).__init__(*args, **kwargs)
        self.importer_module = __import__('openlp.plugins.songs.lib.importers.%s' %
                                          self.importer_module_name, fromlist=[self.importer_class_name])
        self.importer_class = getattr(self.importer_module, self.importer_class_name)

    def setUp(self):
        """
        Patch and set up the mocks required.
        """
        Registry.create()
        self.add_copyright_patcher = patch('openlp.plugins.songs.lib.importers.%s.%s.add_copyright' %
                                           (self.importer_module_name, self.importer_class_name))
        self.add_verse_patcher = patch('openlp.plugins.songs.lib.importers.%s.%s.add_verse' %
                                       (self.importer_module_name, self.importer_class_name))
        self.finish_patcher = patch('openlp.plugins.songs.lib.importers.%s.%s.finish' %
                                    (self.importer_module_name, self.importer_class_name))
        self.add_author_patcher = patch('openlp.plugins.songs.lib.importers.%s.%s.add_author' %
                                        (self.importer_module_name, self.importer_class_name))
        self.song_import_patcher = patch('openlp.plugins.songs.lib.importers.%s.SongImport' %
                                         self.importer_module_name)
        self.mocked_add_copyright = self.add_copyright_patcher.start()
        self.mocked_add_verse = self.add_verse_patcher.start()
        self.mocked_finish = self.finish_patcher.start()
        self.mocked_add_author = self.add_author_patcher.start()
        self.mocked_song_importer = self.song_import_patcher.start()
        self.mocked_manager = MagicMock()
        self.mocked_import_wizard = MagicMock()
        self.mocked_finish.return_value = True

    def tearDown(self):
        """
        Clean up
        """
        self.add_copyright_patcher.stop()
        self.add_verse_patcher.stop()
        self.finish_patcher.stop()
        self.add_author_patcher.stop()
        self.song_import_patcher.stop()

    def load_external_result_data(self, file_path):
        """
        A method to load and return an object containing the song data from an external file.

        :param openlp.core.common.path.Path file_path: The path of the file to load
        """
        return json.loads(file_path.read_bytes().decode())

    def file_import(self, source_file_name, result_data):
        """
        Import the given file and check that it has imported correctly
        """
        importer = self.importer_class(self.mocked_manager, file_paths=[source_file_name])
        importer.import_wizard = self.mocked_import_wizard
        importer.stop_import_flag = False
        importer.topics = []

        # WHEN: Importing the source file
        importer.import_source = source_file_name
        add_verse_calls = self._get_data(result_data, 'verses')
        author_calls = self._get_data(result_data, 'authors')
        ccli_number = self._get_data(result_data, 'ccli_number')
        comments = self._get_data(result_data, 'comments')
        song_book_name = self._get_data(result_data, 'song_book_name')
        song_copyright = self._get_data(result_data, 'copyright')
        song_number = self._get_data(result_data, 'song_number')
        title = self._get_data(result_data, 'title')
        topics = self._get_data(result_data, 'topics')
        verse_order_list = self._get_data(result_data, 'verse_order_list')

        # THEN: do_import should return none, the song data should be as expected, and finish should have been called.
        assert importer.do_import() is None, 'do_import should return None when it has completed'

        # Debug information - will be displayed when the test fails
        log.debug("Title imported: %s" % importer.title)
        log.debug("Verses imported: %s" % self.mocked_add_verse.mock_calls)
        log.debug("Verse order imported: %s" % importer.verse_order_list)
        log.debug("Authors imported: %s" % self.mocked_add_author.mock_calls)
        log.debug("CCLI No. imported: %s" % importer.ccli_number)
        log.debug("Comments imported: %s" % importer.comments)
        log.debug("Songbook imported: %s" % importer.song_book_name)
        log.debug("Song number imported: %s" % importer.song_number)
        log.debug("Song copyright imported: %s" % importer.song_number)
        log.debug("Topics imported: %s" % importer.topics)

        assert importer.title == title, 'title for %s should be "%s"' % (source_file_name, title)
        for author in author_calls:
            if isinstance(author, str):
                self.mocked_add_author.assert_any_call(author)
            else:
                self.mocked_add_author.assert_any_call(*author)
        if song_copyright:
            self.mocked_add_copyright.assert_called_with(song_copyright)
        if ccli_number:
            assert importer.ccli_number == ccli_number, \
                'ccli_number for %s should be %s' % (source_file_name, ccli_number)
        expected_calls = []
        for verse_text, verse_tag in add_verse_calls:
            self.mocked_add_verse.assert_any_call(verse_text, verse_tag)
            expected_calls.append(call(verse_text, verse_tag))
        self.mocked_add_verse.assert_has_calls(expected_calls, any_order=False)
        if topics:
            assert importer.topics == topics, 'topics for %s should be %s' % (source_file_name, topics)
        if comments:
            assert importer.comments == comments, \
                'comments for %s should be "%s"' % (source_file_name, comments)
        if song_book_name:
            assert importer.song_book_name == song_book_name, \
                'song_book_name for %s should be "%s"' % (source_file_name, song_book_name)
        if song_number:
            assert importer.song_number == song_number, \
                'song_number for %s should be %s' % (source_file_name, song_number)
        if verse_order_list:
            assert importer.verse_order_list == verse_order_list, \
                'verse_order_list for %s should be %s' % (source_file_name, verse_order_list)
        self.mocked_finish.assert_called_with()

    def _get_data(self, data, key):
        if key in data:
            return data[key]
        return ''