(self)
| 1961 | assert_raises(TypeError, should_raise) |
| 1962 | |
| 1963 | def test_difference(self): |
| 1964 | _, _, twin1, twin2, _, _ = self._create_sets() |
| 1965 | |
| 1966 | # basic set math |
| 1967 | set1 = util.IdentitySet([1, 2, 3]) |
| 1968 | set2 = util.IdentitySet([2, 3, 4]) |
| 1969 | eq_(set1.difference(set2), util.IdentitySet([1])) |
| 1970 | eq_(set2.difference(set1), util.IdentitySet([4])) |
| 1971 | |
| 1972 | # empty sets |
| 1973 | empty = util.IdentitySet([]) |
| 1974 | eq_(empty.difference(empty), empty) |
| 1975 | |
| 1976 | # the same sets |
| 1977 | eq_(twin1.difference(twin2), empty) |
| 1978 | eq_(twin2.difference(twin1), empty) |
| 1979 | |
| 1980 | # totally different sets |
| 1981 | unique1 = util.IdentitySet([1]) |
| 1982 | unique2 = util.IdentitySet([2]) |
| 1983 | eq_(unique1.difference(unique2), util.IdentitySet([1])) |
| 1984 | eq_(unique2.difference(unique1), util.IdentitySet([2])) |
| 1985 | |
| 1986 | # not an IdentitySet |
| 1987 | not_an_identity_set = object() |
| 1988 | assert_raises(TypeError, unique1.difference, not_an_identity_set) |
| 1989 | |
| 1990 | def test_dunder_sub(self): |
| 1991 | _, _, twin1, twin2, _, _ = self._create_sets() |
nothing calls this directly
no test coverage detected