Introduce run-dunders-special.test

Author: jairov4

mypyc/test-data/run-dunders-special.test

@@ -0,0 +1,9 @@
+[case testDundersNotImplemented]
+# This case is special because it tests the behavior of NotImplemented
+# used in a typed function which return type is bool.
+# This is a convention that can be overriden by the user.
+class UsesNotImplemented:
+    def __eq__(self, b: object) -> bool:
+        return NotImplemented
+
+assert UsesNotImplemented() != object()

mypyc/test-data/run-dunders.test

@@ -32,10 +32,6 @@ class BoxedThing:
 class Subclass2(BoxedThing):
     pass
 
-class UsesNotImplemented:
-    def __eq__(self, b: object) -> bool:
-        return NotImplemented
-
 def index_into(x : Any, y : Any) -> Any:
     return x[y]
 
@@ -81,8 +77,6 @@ assert is_truthy(Item('a'))
 assert not is_truthy(Subclass1(''))
 assert is_truthy(Subclass1('a'))
 
-assert UsesNotImplemented() != object()
-
 internal_index_into()
 [out]
 7 7

mypyc/test/test_run.py

@@ -63,6 +63,7 @@
     "run-bench.test",
     "run-mypy-sim.test",
     "run-dunders.test",
+    "run-dunders-special.test",
     "run-singledispatch.test",
     "run-attrs.test",
     "run-python37.test",