Add an interface test for the find_plugins method.

Not sure if this should be an interface test or a scenario test, but it does very little mocking, tries to let the bits of OpenLP run for real, and checks that all the plugins are imported.

Remove the superfluous argument to the find_plugins method.

openlp/core/lib/pluginmanager.py

@@ -61,21 +61,16 @@ class PluginManager(object):
         self.plugins = []
         log.info(u'Plugin manager Initialised')
 
-    def find_plugins(self, plugin_dir):
+    def find_plugins(self):
         """
-        Scan the directory ``plugin_dir`` for objects inheriting from the
-        ``Plugin`` class.
-
-        ``plugin_dir``
-            The directory to scan.
-
+        Scan a directory for objects inheriting from the ``Plugin`` class.
         """
         log.info(u'Finding plugins')
-        start_depth = len(os.path.abspath(plugin_dir).split(os.sep))
-        present_plugin_dir = os.path.join(plugin_dir, 'presentations')
-        log.debug(u'finding plugins in %s at depth %d', unicode(plugin_dir), start_depth)
-        for root, dirs, files in os.walk(plugin_dir):
-            if sys.platform == 'darwin'and root.startswith(present_plugin_dir):
+        start_depth = len(os.path.abspath(self.base_path).split(os.sep))
+        present_plugin_dir = os.path.join(self.base_path, 'presentations')
+        log.debug(u'finding plugins in %s at depth %d', unicode(self.base_path), start_depth)
+        for root, dirs, files in os.walk(self.base_path):
+            if sys.platform == 'darwin' and root.startswith(present_plugin_dir):
                 # TODO Presentation plugin is not yet working on Mac OS X.
                 # For now just ignore it. The following code will ignore files from the presentation plugin directory
                 # and thereby never import the plugin.

openlp/core/ui/mainwindow.py

@@ -551,7 +551,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
         # Define the media Dock Manager
         self.mediaDockManager = MediaDockManager(self.mediaToolBox)
         log.info(u'Load Plugins')
-        self.plugin_manager.find_plugins(plugin_path)
+        self.plugin_manager.find_plugins()
         # hook methods have to happen after find_plugins. Find plugins needs
         # the controllers hence the hooks have moved from setupUI() to here
         # Find and insert settings tabs

tests/interfaces/__init__.py

@@ -0,0 +1,8 @@
+import sip
+sip.setapi(u'QDate', 2)
+sip.setapi(u'QDateTime', 2)
+sip.setapi(u'QString', 2)
+sip.setapi(u'QTextStream', 2)
+sip.setapi(u'QTime', 2)
+sip.setapi(u'QUrl', 2)
+sip.setapi(u'QVariant', 2)

tests/interfaces/openlp_core_lib/test_pluginmanager.py

@@ -0,0 +1,60 @@
+"""
+Package to test the openlp.core.lib.pluginmanager package.
+"""
+import os
+import sys
+from tempfile import mkstemp
+from unittest import TestCase
+
+from mock import MagicMock, patch
+from PyQt4 import QtGui
+
+from openlp.core.lib.pluginmanager import PluginManager
+from openlp.core.lib import Registry, Settings
+
+
+class TestPluginManager(TestCase):
+    """
+    Test the PluginManager class
+    """
+
+    def setUp(self):
+        """
+        Some pre-test setup required.
+        """
+        fd, self.ini_file = mkstemp(u'.ini')
+        Settings().set_filename(self.ini_file)
+        Registry.create()
+        Registry().register(u'service_list', MagicMock())
+        self.app = QtGui.QApplication([])
+        self.main_window = QtGui.QMainWindow()
+        Registry().register(u'main_window', self.main_window)
+        self.plugins_dir = os.path.abspath(os.path.join(os.path.basename(__file__), u'..', u'openlp', u'plugins'))
+
+    def tearDown(self):
+        os.unlink(self.ini_file)
+
+    def find_plugins_test(self):
+        """
+        Test the find_plugins() method to ensure it imports the correct plugins.
+        """
+        # GIVEN: A plugin manager
+        plugin_manager = PluginManager(self.plugins_dir)
+
+        # WHEN: We mock out sys.platform to make it return "darwin" and then find the plugins
+        old_platform = sys.platform
+        sys.platform = u'darwin'
+        plugin_manager.find_plugins()
+        sys.platform = old_platform
+
+        # THEN: We should find the "Songs", "Bibles", etc in the plugins list
+        plugin_names = [plugin.name for plugin in plugin_manager.plugins]
+        assert u'songs' in plugin_names, u'There should be a "songs" plugin.'
+        assert u'bibles' in plugin_names, u'There should be a "bibles" plugin.'
+        assert u'presentations' not in plugin_names, u'There should NOT be a "presentations" plugin.'
+        assert u'images' in plugin_names, u'There should be a "images" plugin.'
+        assert u'media' in plugin_names, u'There should be a "media" plugin.'
+        assert u'custom' in plugin_names, u'There should be a "custom" plugin.'
+        assert u'songusage' in plugin_names, u'There should be a "songusage" plugin.'
+        assert u'alerts' in plugin_names, u'There should be a "alerts" plugin.'
+        assert u'remotes' in plugin_names, u'There should be a "remotes" plugin.'