Added unit for a couple methods on templates

src/test/sessions/test_twitter_templates.py

@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+import pytest
+import gettext
+import datetime
+gettext.install("test")
+from unittest import mock
+from sessions.twitter import templates
+
+def test_default_values():
+    """ Tests wheter default values are the expected ones.
+    This might be useful so we will have this failing when we update anything from those values.
+    As TWBlue might be using those from other dialogs.
+    """
+    assert templates.tweet_variables == ["date", "display_name", "screen_name", "source", "lang", "text", "image_descriptions"]
+    assert templates.dm_variables == ["date", "sender_display_name", "sender_screen_name", "recipient_display_name", "recipient_display_name", "text"]
+    assert templates.person_variables == ["display_name", "screen_name", "location", "description", "followers", "following", "listed", "likes", "tweets", "created_at"]
+
+@pytest.mark.parametrize("offset, language, expected_result", [
+    (0, "en_US", "Wednesday, October 10, 2018 20:19:24"),
+    (-21600, "en_US", "Wednesday, October 10, 2018 14:19:24"),
+    (7200, "en_US", "Wednesday, October 10, 2018 22:19:24"),
+    (0, "es_ES", "miércoles, octubre 10, 2018 20:19:24"),
+    (-21600, "es_ES", "miércoles, octubre 10, 2018 14:19:24"),
+    (7200, "es_ES", "miércoles, octubre 10, 2018 22:19:24"),
+    (18000, "es_ES", "jueves, octubre 11, 2018 1:19:24"),
+])
+def test_process_date_absolute_time(offset, language, expected_result):
+    """ Tests date processing function for tweets, when relative_times is set to False. """
+    # Date representation used by twitter, converted to datetime object, as tweepy already does this.
+    # Original date was Wed Oct 10 20:19:24 +0000 2018
+    date_field = datetime.datetime(2018, 10, 10, 20, 19, 24)
+    with mock.patch("languageHandler.curLang", new=language):
+        processed_date = templates.process_date(date_field, relative_times=False, offset_seconds=offset)
+        assert processed_date == expected_result
+
+def test_process_date_relative_time():
+    date_field = datetime.datetime(2018, 10, 10, 20, 19, 24)
+    with mock.patch("languageHandler.curLang", new="es_ES"):
+        processed_date = templates.process_date(date_field, relative_times=True, offset_seconds=7200)
+        # As this depends in relative times and this is subject to change, let's do some light checks here and hope the string is going to be valid.
+        assert isinstance(processed_date, str)
+        assert "hace" in processed_date and "años" in processed_date
+