Add tests.common.ANY (#84240)

tests/common.py

@@ -1303,6 +1303,38 @@ def assert_lists_same(a, b):
         assert i in a
 
 
+_SENTINEL = object()
+
+
+class _HA_ANY:
+    """A helper object that compares equal to everything.
+
+    Based on unittest.mock.ANY, but modified to not show up in pytest's equality
+    assertion diffs.
+    """
+
+    _other = _SENTINEL
+
+    def __eq__(self, other):
+        """Test equal."""
+        self._other = other
+        return True
+
+    def __ne__(self, other):
+        """Test not equal."""
+        self._other = other
+        return False
+
+    def __repr__(self):
+        """Return repr() other to not show up in pytest quality diffs."""
+        if self._other is _SENTINEL:
+            return "<ANY>"
+        return repr(self._other)
+
+
+ANY = _HA_ANY()
+
+
 def raise_contains_mocks(val):
     """Raise for mocks."""
     if isinstance(val, Mock):