micropython: add micropython component

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

@@ -0,0 +1,43 @@
+# object.__new__(cls) is the only way in Python to allocate empty
+# (non-initialized) instance of class.
+# See e.g. http://infohost.nmt.edu/tcc/help/pubs/python/web/new-new-method.html
+# TODO: Find reference in CPython docs
+try:
+    # If we don't expose object.__new__ (small ports), there's
+    # nothing to test.
+    object.__new__
+except AttributeError:
+    print("SKIP")
+    raise SystemExit
+
+class Foo:
+
+    def __new__(cls):
+        # Should not be called in this test
+        print("in __new__")
+        raise RuntimeError
+
+    def __init__(self):
+        print("in __init__")
+        self.attr = "something"
+
+
+o = object.__new__(Foo)
+#print(o)
+print("Result of __new__ has .attr:", hasattr(o, "attr"))
+print("Result of __new__ is already a Foo:", isinstance(o, Foo))
+
+o.__init__()
+#print(dir(o))
+print("After __init__ has .attr:", hasattr(o, "attr"))
+print(".attr:", o.attr)
+
+# should only be able to call __new__ on user types
+try:
+    object.__new__(1)
+except TypeError:
+    print("TypeError")
+try:
+    object.__new__(int)
+except TypeError:
+    print("TypeError")