micropython: add micropython component

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

@@ -0,0 +1,35 @@
+# test MicroPython-specific features of struct
+
+try:
+    import ustruct as struct
+except:
+    try:
+        import struct
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+class A():
+    pass
+
+# pack and unpack objects
+o = A()
+s = struct.pack("<O", o)
+o2 = struct.unpack("<O", s)
+print(o is o2[0])
+
+# pack can accept less arguments than required for the format spec
+print(struct.pack('<2I', 1))
+
+# pack and unpack pointer to a string
+# This requires uctypes to get the address of the string and instead of
+# putting this in a dedicated test that can be skipped we simply pass
+# if the import fails.
+try:
+    import uctypes
+    o = uctypes.addressof('abc')
+    s = struct.pack("<S", o)
+    o2 = struct.unpack("<S", s)
+    assert o2[0] == 'abc'
+except ImportError:
+    pass