micropython: add micropython component

components/language/micropython/tests/extmod/ujson_dump.py

@@ -0,0 +1,30 @@
+try:
+    from uio import StringIO
+    import ujson as json
+except:
+    try:
+        from io import StringIO
+        import json
+    except ImportError:
+        print("SKIP")
+        raise SystemExit
+
+s = StringIO()
+json.dump(False, s)
+print(s.getvalue())
+
+s = StringIO()
+json.dump({"a": (2, [3, None])}, s)
+print(s.getvalue())
+
+# dump to a small-int not allowed
+try:
+    json.dump(123, 1)
+except (AttributeError, OSError):  # CPython and uPy have different errors
+    print("Exception")
+
+# dump to an object not allowed
+try:
+    json.dump(123, {})
+except (AttributeError, OSError):  # CPython and uPy have different errors
+    print("Exception")