Index.map followups (original) (raw)

xref #15081, a couple of issues

• IntervalIndex.map is xfailed
• parametrize indexex/common.py/test_map similar to how indexex/datetimelike.py/test_map is done (IOW on dict / Series) (COMPAT: map infers all-nan / empty correctly #18491)
• resolve datetimelike with empty map [2] should be all NaT for the datetimelikes. (COMPAT: map infers all-nan / empty correctly #18491)

In [2]: pd.date_range('20130101', periods=3).map({})
Out[2]: Float64Index([nan, nan, nan], dtype='float64')

In [3]: pd.Index([1,2,3]).map({})
Out[3]: Float64Index([nan, nan, nan], dtype='float64')