diff options
Diffstat (limited to 'test/base/test_utils.py')
| -rw-r--r-- | test/base/test_utils.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/base/test_utils.py b/test/base/test_utils.py index 27945f236..0ef86545b 100644 --- a/test/base/test_utils.py +++ b/test/base/test_utils.py @@ -343,6 +343,23 @@ class ImmutableDictTest(fixtures.TestBase): i2 = util.immutabledict({"a": 42, 42: "a"}) eq_(str(i2), "immutabledict({'a': 42, 42: 'a'})") + @testing.requires.python39 + def test_pep584(self): + i = util.immutabledict({"a": 2}) + with expect_raises_message(TypeError, "object is immutable"): + i |= {"b": 42} + eq_(i, {"a": 2}) + + i2 = i | {"x": 3} + eq_(i, {"a": 2}) + eq_(i2, {"a": 2, "x": 3}) + is_true(isinstance(i2, util.immutabledict)) + + i2 = {"x": 3} | i2 + eq_(i, {"a": 2}) + eq_(i2, {"a": 2, "x": 3}) + is_true(isinstance(i2, util.immutabledict)) + class ImmutableTest(fixtures.TestBase): @combinations(util.immutabledict({1: 2, 3: 4}), util.FacadeDict({2: 3})) |