micropython: add micropython component

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

@@ -0,0 +1,36 @@
+# test overriding builtins
+
+import builtins
+
+# override generic builtin
+try:
+    builtins.abs = lambda x: x + 1
+except AttributeError:
+    print("SKIP")
+    raise SystemExit
+
+print(abs(1))
+
+# __build_class__ is handled in a special way
+orig_build_class = __build_class__
+builtins.__build_class__ = lambda x, y: ('class', y)
+class A:
+    pass
+print(A)
+builtins.__build_class__ = orig_build_class
+
+# __import__ is handled in a special way
+def custom_import(name, globals, locals, fromlist, level):
+    print('import', name, fromlist, level)
+    class M:
+        a = 1
+        b = 2
+    return M
+builtins.__import__ = custom_import
+__import__('A', None, None, None, 0)
+import a
+import a.b
+from a import a
+from a.b import a, b
+from .a import a
+from ..a import a, b