add tests

tests/test_crypto.py

@@ -0,0 +1,37 @@
+import pytest
+
+from cashu.core.b_dhke import hash_to_curve
+
+
+def test_hash_to_curve():
+    result = hash_to_curve(
+        bytes.fromhex(
+            "0000000000000000000000000000000000000000000000000000000000000000"
+        )
+    )
+    assert (
+        result.serialize().hex()
+        == "0266687aadf862bd776c8fc18b8e9f8e20089714856ee233b3902a591d0d5f2925"
+    )
+
+    result = hash_to_curve(
+        bytes.fromhex(
+            "0000000000000000000000000000000000000000000000000000000000000001"
+        )
+    )
+    assert (
+        result.serialize().hex()
+        == "02ec4916dd28fc4c10d78e287ca5d9cc51ee1ae73cbfde08c6b37324cbfaac8bc5"
+    )
+
+
+def test_hash_to_curve_iteration():
+    result = hash_to_curve(
+        bytes.fromhex(
+            "0000000000000000000000000000000000000000000000000000000000000002"
+        )
+    )
+    assert (
+        result.serialize().hex()
+        == "02076c988b353fcbb748178ecb286bc9d0b4acf474d4ba31ba62334e46c97c416a"
+    )