def test_index_difference_b(self) -> None:
idx1 = Index(())
idx2 = Index(('c', 'b', 'a'))
idx3 = idx1.difference(idx2)
self.assertEqual(idx3.values.tolist(), [])
idx4 = Index(('c', 'b', 'a'))
idx5 = Index(())
idx6 = idx4.difference(idx5)
self.assertEqual(idx6.values.tolist(), ['c', 'b', 'a'])
def test_index_difference_d(self) -> None:
obj = object()
idx1 = Index((1, None, '3', np.nan, 4.4, obj))
idx2 = Index((2, 1, '3', 'five', object()))
idx3 = idx1.difference(idx2)
self.assertEqual(set(idx3.values.tolist()),
set([np.nan, None, 4.4,
obj])) # Note: order is lost...
def test_index_difference_c(self) -> None:
obj = object()
idx1 = Index((1, None, '3', np.nan, 4.4, obj)) # type: ignore
idx2 = Index((2, 3, '4', 'five', 6.6, object()))
idx3 = idx1.difference(idx2)
self.assertEqual(set(idx3.values.tolist()),
set([np.nan, 1, 4.4, obj, '3',
None])) # Note: order is lost...
def test_index_intersection_e(self) -> None:
idx1 = Index((10, 'foo', None, 4.1))
idx2 = idx1.union(idx1)
self.assertEqual(id(idx1), id(idx2))
self.assertTrue(idx1.equals(idx1))
idx3 = idx1.intersection(idx1)
self.assertEqual(id(idx1), id(idx3))
self.assertTrue(idx1.equals(idx3))
idx4 = idx1.difference(idx1)
self.assertEqual(len(idx4), 0)
self.assertEqual(idx4.dtype, np.dtype(object))
def test_index_difference_a(self) -> None:
idx1 = Index(('c', 'b', 'a'))
idx2 = Index(('c', 'b', 'a'))
idx3 = idx1.difference(idx2)
self.assertEqual(idx3.values.tolist(), [])