Tests for text_strip fail on \xa0

[Uwe L. Korn]

pytest output:

[gw3] darwin -- Python 3.8.2 /Users/uwe/miniconda3/envs/fletcher/bin/python

fletcher_variant = 'chunked'

>   ???

tests/test_text.py:320:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
tests/test_text.py:352: in test_text_strip
    _do_test_text_strip(fletcher_variant, 1, data)
tests/test_text.py:376: in _do_test_text_strip
    tm.assert_series_equal(result_fr, result_pd)
pandas/_libs/testing.pyx:64: in pandas._libs.testing.assert_almost_equal
    ???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

>   ???
E   AssertionError: Series are different
E
E   Series values are different (100.0 %)
E   [index]: [0]
E   [left]:  [ ]
E   [right]: []

pandas/_libs/testing.pyx:178: AssertionError
------------------------------------------------------------------------------------------------ Hypothesis ------------------------------------------------------------------------------------------------
Falsifying example: test_text_strip(
    fletcher_variant='chunked', data=['\xa0'],