micropython: add micropython component

components/language/micropython/tests/basics/builtin_property_inherit.py

@@ -0,0 +1,53 @@
+# test builtin property combined with inheritance
+try:
+    property
+except:
+    print("SKIP")
+    raise SystemExit
+
+# test property in a base class works for derived classes
+class A:
+    @property
+    def x(self):
+        print('A x')
+        return 123
+class B(A):
+    pass
+class C(B):
+    pass
+class D:
+    pass
+class E(C, D):
+    pass
+print(A().x)
+print(B().x)
+print(C().x)
+print(E().x)
+
+# test that we can add a property to base class after creation
+class F:
+    pass
+F.foo = property(lambda self: print('foo get'))
+class G(F):
+    pass
+F().foo
+G().foo
+
+# should be able to add a property to already-subclassed class because it already has one
+F.bar = property(lambda self: print('bar get'))
+F().bar
+G().bar
+
+# test case where class (H here) is already subclassed before adding attributes
+class H:
+    pass
+class I(H):
+    pass
+
+# should be able to add a normal member to already-subclassed class
+H.val = 2
+print(I().val)
+
+# should be able to add a property to the derived class
+I.baz = property(lambda self: print('baz get'))
+I().baz