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Creating DatetimeIndex from empty array with datetime64 dtype raises IndexError #2804

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Creating DatetimeIndex from empty array with datetime64 dtype raises IndexError #2804

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4 changes: 4 additions & 0 deletions pandas/tests/test_common.py
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,10 @@ def test_isnull_datetime():
assert(mask[0])
assert(not mask[1:].any())

def test_datetimeindex_from_empty_datetime64_array():
for unit in [ 'ms', 'us', 'ns' ]:
idx = DatetimeIndex(np.array([], dtype='datetime64[%s]' % unit))
assert(len(idx) == 0)

def test_any_none():
assert(com._any_none(1, 2, 3, None))
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2 changes: 1 addition & 1 deletion pandas/tseries/index.py
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Expand Up @@ -227,7 +227,7 @@ def __new__(cls, data=None,
offset = data.offset
verify_integrity = False
else:
if data.dtype != _NS_DTYPE:
if data.dtype != _NS_DTYPE and data.size:
subarr = tslib.cast_to_nanoseconds(data)
else:
subarr = data
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