Add comment and tweak changelog

hypothesis-python/RELEASE.rst

@@ -2,4 +2,4 @@ RELEASE_TYPE: patch
 
 Add a health check that detects if the same test is executed
 several times by :ref:`different executors<custom-function-execution>`.
-This can lead to various difficult-to-debug problems.
+This can lead to difficult-to-debug problems such as :issue:`3446`.

hypothesis-python/src/hypothesis/core.py

@@ -1252,6 +1252,7 @@ def wrapped_test(*arguments, **kwargs):
                 )
             if settings.database is not None:
                 nonlocal prev_self
+                # Check selfy really is self (not e.g. a mock) before we health-check
                 cur_self = (
                     stuff.selfy
                     if getattr(type(stuff.selfy), test.__name__, None) is wrapped_test

hypothesis-python/src/hypothesis/internal/reflection.py

@@ -98,7 +98,7 @@ def function_digest(function):
         # If we can't actually get the source code, try for the name as a fallback.
         # NOTE: We might want to change this to always adding function.__qualname__,
         # to differentiate f.x. two classes having the same function implementation
-        # with class-dependend behaviour.
+        # with class-dependent behaviour.
         try:
             hasher.update(function.__name__.encode())
         except AttributeError:

hypothesis-python/tests/django/toystore/test_basic_configuration.py

@@ -24,7 +24,9 @@
 
 
 class SomeStuff:
-    @settings(suppress_health_check=[HealthCheck.too_slow])
+    @settings(
+        suppress_health_check=[HealthCheck.too_slow, HealthCheck.differing_executors]
+    )
     @given(integers())
     def test_is_blank_slate(self, unused):
         Company.objects.create(name="MickeyCo")