Add mypyc test marks to new tests that patch (#3871)

This is enough for me to get a clean test run on Python 3.9 with mypyc.
I have not been able to repro the pickle failures on either Linux or
macOS.

diff --git a/tests/test_black.py b/tests/test_black.py
index 4fb6aef9bca126dff9718c151a8b7398867b2eb3..badb8fff5fbca49be9bf07cc1ea438a624e74885 100644 (file)
--- a/tests/test_black.py
+++ b/tests/test_black.py
@@ -1985,6 +1985,7 @@ class TestCaching:
             assert not cache.is_changed(one)
             assert not cache.is_changed(two)
 
+    @pytest.mark.incompatible_with_mypyc
     @pytest.mark.parametrize("color", [False, True], ids=["no-color", "with-color"])
     def test_no_cache_when_writeback_diff(self, color: bool) -> None:
         mode = DEFAULT_MODE
@@ -2046,6 +2047,7 @@ class TestCaching:
             read_cache = black.Cache.read(mode)
             assert not read_cache.is_changed(src)
 
+    @pytest.mark.incompatible_with_mypyc
     def test_filter_cached(self) -> None:
         with TemporaryDirectory() as workspace:
             path = Path(workspace)