def test_non_numeric(self): assert utils.safe_is_nan("some string") == False
def test_string(self): assert utils.safe_is_nan("nan") == False
def test_none(self): assert utils.safe_is_nan(None) == False
def test_int(self): assert utils.safe_is_nan(-99999) == False
def test_float(self): assert utils.safe_is_nan(12.5) == False
def test_python_nan(self): assert utils.safe_is_nan(float("nan")) == True
def test_numpy_nan(self): assert utils.safe_is_nan(np.nan) == True