Kirill Simonov avatar Kirill Simonov committed 8526ec1

Added a test case breaking `fork()`.

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Files changed (2)


         # is assumed.  Note that `A is B` <=> `id(A) == id(B)`.
         if equality_vector is None:
             equality_vector = id(self)
+        # Flatten the vector.
+        if isinstance(equality_vector, tuple):
+            elements = []
+            for element in equality_vector:
+                if isinstance(element, Comparable):
+                    elements.append((element.__class__, element.hash,
+                                     element.equality_vector))
+                else:
+                    elements.append(element)
+            equality_vector = tuple(elements)
         self.equality_vector = equality_vector
         self.hash = hash(equality_vector)


     - uri: /(program^degree)?count(^.student)=max(fork().count(^.student))
     # fork() with nullable kernel
     - uri: /program.fork(part_of){root().program{school.code, code, part_of}, school.code, code, part_of}
+    # fork().fork() is inefficient
+    - uri: /school.fork().fork().fork()
+      skip: true
   - title: Table Expressions
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