1 files changed, 36 insertions, 0 deletions
diff --git a/tests/extmod/uhashlib_sha256.py b/tests/extmod/uhashlib_sha256.py
new file mode 100644
index 0000000000..ff51f2ffa5
--- /dev/null
+++ b/tests/extmod/uhashlib_sha256.py
@@ -0,0 +1,36 @@
+import sys
+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")
+        sys.exit()
+
+
+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())
+
+# 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())