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TST: Add failing tests for minute rounding #21265

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TST: Add failing tests for minute rounding #21265

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19 changes: 19 additions & 0 deletions pandas/tests/scalar/timestamp/test_unary_ops.py
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Original file line number Diff line number Diff line change
Expand Up @@ -118,6 +118,25 @@ def test_ceil_floor_edge(self, test_input, rounder, freq, expected):
expected = Timestamp(expected)
assert result == expected

@pytest.mark.parametrize('test_input, freq, expected', [
('2018-01-01 00:02:00', '2T', '2018-01-01 00:02:00'),
('2018-01-01 00:04:00', '4T', '2018-01-01 00:04:00'),
('2018-01-01 00:15:00', '15T', '2018-01-01 00:15:00'),
('2018-01-01 00:20:00', '20T', '2018-01-01 00:20:00'),
])
def test_round_minute_freq(self, test_input, freq, expected):
# ensure timestamps that shouldn't round don't
# GH#21262
dt = Timestamp(test_input)
expected = Timestamp(expected)

result_ceil = dt.ceil(freq)
assert result_ceil == expected
result_floor = dt.floor(freq)
assert result_floor == expected
result_round = dt.round(freq)
assert result_round == expected

def test_ceil(self):
dt = Timestamp('20130101 09:10:11')
result = dt.ceil('D')
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