def test_has_no_nans_raises():
df = pd.DataFrame(np.random.randn(5, 3))
df.iloc[0, 0] = np.nan
with pytest.raises(AssertionError):
ck.has_no_nans(df)
with pytest.raises(AssertionError):
dc.HasNoNans()(_add_n)(df, n=2)
def test_has_no_nans():
df = pd.DataFrame(np.random.randn(5, 3))
result = ck.has_no_nans(df)
tm.assert_frame_equal(df, result)
result = dc.HasNoNans()(_add_n)(df, 2)
tm.assert_frame_equal(result, df + 2)
result = dc.HasNoNans()(_add_n)(df, n=2)
tm.assert_frame_equal(result, df + 2)