Use correct filenames for the tests (and split some)

tests/unit/test_rules_day.py

@@ -0,0 +1,30 @@
+from __future__ import absolute_import, unicode_literals
+
+import pytest
+from freezegun import freeze_time
+
+from tests.factories.rule import DayRuleFactory
+from tests.factories.segment import SegmentFactory
+
+
+@pytest.mark.django_db
+def test_day_rule_create():
+    segment = SegmentFactory(name='DaySegment')
+    day_rule = DayRuleFactory(mon=True, thu=True, segment=segment)
+
+    assert day_rule.mon is True
+    assert day_rule.thu is True
+    assert day_rule.sun is False
+
+
+@pytest.mark.django_db
+@freeze_time("2017-01-01")
+def test_request_day_segment(client, site):
+    day_only_segment = SegmentFactory(name='Day only')
+    DayRuleFactory(
+        sun=True,
+        segment=day_only_segment)
+
+    client.get('/')
+
+    assert client.session['segments'][0]['encoded_name'] == 'day-only'