def test_sem(self):
df = SpikeGroupedDataFrame(self.x)
for axis, ddof in itools.product((0, 1), (0, 1)):
s = df.sem(axis=axis, ddof=ddof)
self.assertIsInstance(s, Series)
self.assertEqual(s.values.size, df.shape[1 - axis])
def test_constructor(self):
df0 = SpikeGroupedDataFrame(self.x)
df1 = df0._constructor(df0)
df2 = df0._constructor(df0.values)
df3 = df0._constructor(self.x)
for df in (df1, df2, df3):
assert_frame_equal(df0, df)
