Adding detect-raw-datetime-manipulation option

tests/detect_raw_datetime_manipulation_test.py

@@ -0,0 +1,24 @@
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+from pre_commit_hooks.detect_datetime_raw_manipulation import _check_file
+from pre_commit_hooks.detect_datetime_raw_manipulation import main
+from testing.util import get_resource_path
+
+
+def test_flagged_file():
+    rc = main([get_resource_path('detect_datetime_raw_manipulation/raw_timedelta_usage__flag.py')])
+    assert rc == 1
+
+    result = _check_file(get_resource_path('detect_datetime_raw_manipulation/raw_timedelta_usage__flag.py'))
+    assert result == 10
+
+
+def test_flagged_ignore():
+    rc = main([get_resource_path('detect_datetime_raw_manipulation/raw_timedelta_usage__ignore.py')])
+    assert rc == 0
+
+
+def test_flagged_clean():
+    rc = main([get_resource_path('detect_datetime_raw_manipulation/raw_timedelta_usage__clean.py')])
+    assert rc == 0