Need to iterate over the flattened array.

Author: kalekundert

src/_pytest/python_api.py

@@ -211,7 +211,7 @@ def __eq__(self, actual):
         the pre-specified tolerance.
         """
         if _is_numpy_array(actual):
-            return all(a == self for a in actual)
+            return all(a == self for a in actual.flat)
 
         # Short-circuit exact equality.
         if actual == self.expected: