test_nanfunctions.py 文件源码

def test_allnans(self):
        # Check for FutureWarning
        with warnings.catch_warnings(record=True) as w:
            warnings.simplefilter('always')
            res = np.nansum([np.nan]*3, axis=None)
            assert_(res == 0, 'result is not 0')
            assert_(len(w) == 0, 'warning raised')
            # Check scalar
            res = np.nansum(np.nan)
            assert_(res == 0, 'result is not 0')
            assert_(len(w) == 0, 'warning raised')
            # Check there is no warning for not all-nan
            np.nansum([0]*3, axis=None)
            assert_(len(w) == 0, 'unwanted warning raised')