added language manager test

tests/functional/openlp_core_utils/test_languagemanager.py

@@ -0,0 +1,26 @@
+"""
+Functional tests for the Language Manager.
+"""
+
+from unittest import TestCase
+
+from mock import patch
+
+from openlp.core.utils import LanguageManager
+
+class TestLanguageManager(TestCase):
+    """
+    A test suite to test out various methods around the LanguageManager class.
+    """
+    def get_translator_linux_test(self):
+        """
+        """
+        with patch(u'openlp.core.utils.sys.platform') as mocked_platform:
+            # GIVEN: We are on linux.
+            mocked_platform.return_value = u'linux2'
+
+            app_translator, default_translator = LanguageManager.get_translator('en')
+
+            assert not app_translator.isEmpty(), u'The application translator should not be empty'
+            assert not default_translator.isEmpty(), u'The default translator should not be empty'
+