Skip to content

Test for #16726. unittest that ensures datetime is understood #16744

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 3 commits into from
Jun 23, 2017
Merged

Test for #16726. unittest that ensures datetime is understood #16744

Changes from 1 commit
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
b8a6007
Test for #16726. unittest that ensures datetime is understood
Jun 21, 2017
2fb8782
Corrected the test as suggested by @TomAugspurger
Jun 22, 2017
36960cd
Fixed flake8 errors and warnings
Jun 23, 2017
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
8 changes: 8 additions & 0 deletions pandas/tests/series/test_datetime_values.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -409,3 +409,11 @@ def test_date_tz(self):
date(2015, 11, 22)])
assert_series_equal(s.dt.date, expected)
assert_series_equal(s.apply(lambda x: x.date()), expected)

def test_datetime_understood(self):
# Ensures it doesn't throw an exception reported in #16726
try:
pd.Series(pd.date_range("2012-01-01", periods=3)) - pd.offsets.DateOffset(days=6)
except Exception:
assert 'data type "datetime" not understood'
Copy link
Contributor

@TomAugspurger TomAugspurger Jun 21, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This test will always pass, since

  • if there's no exception originally, everything is fine
  • If there is an exception, the assert 'data type "datetime" not understood' is True, so no AssertionError is raised

It's best to assign result = that operation, construct an expected series expected = pd.Series(pd.to_datetime(['2011-12-26', '2011-12-27', '2011-12-28']) and then compare them with tm.assert_series_equal(result, expected)

Copy link
Contributor Author

@hussaintamboli hussaintamboli Jun 22, 2017

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

You are right. My bad!

Please check now.