micropython: add micropython component

components/language/micropython/tests/extmod/uhashlib_sha256.py

@@ -0,0 +1,38 @@
+try:
+    import uhashlib as hashlib
+except ImportError:
+    try:
+        import hashlib
+    except ImportError:
+        # This is neither uPy, nor cPy, so must be uPy with
+        # uhashlib module disabled.
+        print("SKIP")
+        raise SystemExit
+
+
+h = hashlib.sha256()
+print(h.digest())
+
+h = hashlib.sha256()
+h.update(b"123")
+print(h.digest())
+
+h = hashlib.sha256()
+h.update(b"abcd" * 1000)
+print(h.digest())
+
+print(hashlib.sha256(b"\xff" * 64).digest())
+
+# 56 bytes is a boundary case in the algorithm
+print(hashlib.sha256(b"\xff" * 56).digest())
+
+# TODO: running .digest() several times in row is not supported()
+# h = hashlib.sha256(b'123')
+# print(h.digest())
+# print(h.digest())
+
+# TODO: partial digests are not supported
+# h = hashlib.sha256(b'123')
+# print(h.digest())
+# h.update(b'456')
+# print(h.digest())