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TST: on_offset_implementations closes #34751 #37376

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Merged
merged 1 commit into from
Oct 24, 2020
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TST: on_offset_implementations closes #34751 #37376

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9 changes: 8 additions & 1 deletion pandas/tests/tseries/offsets/test_offsets_properties.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
from hypothesis.extra.dateutil import timezones as dateutil_timezones
from hypothesis.extra.pytz import timezones as pytz_timezones
import pytest
import pytz

import pandas as pd
from pandas import Timestamp
Expand Down Expand Up @@ -92,7 +93,13 @@ def test_on_offset_implementations(dt, offset):
# check that the class-specific implementations of is_on_offset match
# the general case definition:
# (dt + offset) - offset == dt
compare = (dt + offset) - offset
try:
compare = (dt + offset) - offset
except pytz.NonExistentTimeError:
# dt + offset does not exist, assume(False) to indicate
# to hypothesis that this is not a valid test case
assume(False)

assert offset.is_on_offset(dt) == (compare == dt)


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