TST: Some tests in indexes/datetimes/test_tools.py don't appear to run

[jschendel]

Code Sample, a copy-pastable example if possible

pandas/pandas/tests/indexes/datetimes/test_tools.py

Lines 28 to 30 in 062f6f1

	class TimeConversionFormats(object):
	def test_to_datetime_format(self):

pandas/pandas/tests/indexes/datetimes/test_tools.py

Lines 337 to 339 in 062f6f1

	class ToDatetimeUnit(object):
	def test_unit(self):

Problem description

None of the tests in the classes linked above appear to run. I noticed this because there's a formatting typo that should have been caught by one of the tests:

pandas/pandas/core/tools/datetimes.py

Line 608 in 062f6f1

"[{excess}]".format(','.join(excess=excess)))

Renaming the classes to TestTimeConversionFormats and TestToDatetimeUnit makes them run locally for me, and the formatting typo gets caught.

I'd be happy to submit a PR to enable these tests and fix the formatting typo. Wanted to check here first to make sure that these weren't purposefully disabled, and that I'm not missing something obvious.

[chris-b1]

This is not intentional but a left over from our conversion to pytest similar to #16478. Please do submit a PR!