def test_firstValid(self):
ts = self.ts.copy()
ts[:5] = np.NaN
index = ts._firstTimeWithValue()
self.assertEqual(index, ts.index[5])
ts[-5:] = np.NaN
index = ts._lastTimeWithValue()
self.assertEqual(index, ts.index[-6])
ser = Series([], index=[])
self.assert_(ser._lastTimeWithValue() is None)
self.assert_(ser._firstTimeWithValue() is None)
def test_firstValid(self):
ts = self.ts.copy()
ts[:5] = np.NaN
index = ts._firstTimeWithValue()
self.assertEqual(index, ts.index[5])
ts[-5:] = np.NaN
index = ts._lastTimeWithValue()
self.assertEqual(index, ts.index[-6])
ser = Series([], index=[])
self.assert_(ser._lastTimeWithValue() is None)
self.assert_(ser._firstTimeWithValue() is None)
