Support non-weakrefable types

HypothesisWorks · Jul 3, 2022 · 6a3f890 · 6a3f890
1 parent 5a4ef42
commit 6a3f890
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Showing 3 changed files with 14 additions and 2 deletions.
diff --git a/hypothesis-python/RELEASE.rst b/hypothesis-python/RELEASE.rst
@@ -0,0 +1,4 @@
+RELEASE_TYPE: patch
+
+:func:`hypothesis.event` now works for hashable objects which do not
+support weakrefs, such as integers and tuples.
diff --git a/hypothesis-python/src/hypothesis/internal/conjecture/engine.py b/hypothesis-python/src/hypothesis/internal/conjecture/engine.py
@@ -1067,10 +1067,13 @@ def event_to_string(self, event):
             return event
         try:
             return self.events_to_strings[event]
-        except KeyError:
+        except (KeyError, TypeError):
             pass
         result = str(event)
-        self.events_to_strings[event] = result
+        try:
+            self.events_to_strings[event] = result
+        except TypeError:
+            pass
         return result
 
 

diff --git a/hypothesis-python/tests/cover/test_statistical_events.py b/hypothesis-python/tests/cover/test_statistical_events.py
@@ -254,3 +254,8 @@ def test(value):
     stats = describe_statistics(call_for_statistics(test))
     assert "- Events:" in stats
     assert "- Highest target score: " in stats
+
+
+@given(st.booleans())
+def test_event_with_non_weakrefable_keys(b):
+    event((b,))