diff --git a/setup.py b/setup.py
index 907269c2..e31d9fcc 100644
--- a/setup.py
+++ b/setup.py
@@ -62,6 +62,7 @@
     "peft>=0.14.0",
     "pytest",
     "python-dotenv",
+    "requests",
     "ruff>=0.9.0",
     "safetensors>=0.3.3",
     "sentencepiece>=0.1.99",
diff --git a/src/open_r1/rewards/api/code/unfoldml/htgen.py b/src/open_r1/rewards/api/code/unfoldml/htgen.py
index db4474b9..5947a873 100644
--- a/src/open_r1/rewards/api/code/unfoldml/htgen.py
+++ b/src/open_r1/rewards/api/code/unfoldml/htgen.py
@@ -95,7 +95,7 @@ def verify_triple_33(
             v = res.json()
         except JSONDecodeError:
             v = None
-        print(v)
+        return v
     # else: 
     except HTTPError as he:
         print(f"HTTP error: {he}")
diff --git a/tests/test_api.py b/tests/test_api.py
new file mode 100644
index 00000000..d5fa705d
--- /dev/null
+++ b/tests/test_api.py
@@ -0,0 +1,40 @@
+import unittest
+
+from open_r1.rewards.api.code.unfoldml.htgen import gen_triples_33, verify_triple_33
+
+
+class TestApi(unittest.TestCase):
+    def test_gen_triples_structure():
+        n_stmt = 3
+        for o in gen_triples_33(n_examples = 1, n_stmt = n_stmt):
+            len_program = len(o['program'])
+            self.assertEqual(len_program, n_stmt)
+    def test_verify_triple_result():
+        is_total = True
+        preconditions = "True" # trivial precondition
+        program = "v4 = (0 - v3)\nv3 = v3\nv5 = v4"
+        post_ok = "v5 == (0 - v3)" # post-condition that verifies
+        post_not_ok = "v5 == (1 - v3)" # post-condition that does not verify
+        # # should return True
+        o = verify_triple_33(
+            is_total = is_total,
+            preconditions = preconditions,
+            program = program,
+            postconditions = post_ok
+            )
+        res_ok = o['prediction_is_correct']
+        self.assertEqual(res_ok, True)
+        # # should return False
+        o = verify_triple_33(
+            is_total = is_total,
+            preconditions = preconditions,
+            program = program,
+            postconditions = post_not_ok
+            )
+        res_not_ok = o['prediction_is_correct']
+        salf.assertEqual(res_not_ok, False)
+
+
+
+if __name__ == "__main__":
+    unittest.main()
\ No newline at end of file
diff --git a/tests/test_rewards.py b/tests/test_rewards.py
index 9e41bdb0..7bcf807c 100644
--- a/tests/test_rewards.py
+++ b/tests/test_rewards.py
@@ -9,7 +9,6 @@
     reasoning_steps_reward,
 )
 
-
 class TestRewards(unittest.TestCase):
     def test_accuracy_reward_correct_answer(self):
         """Test accuracy_reward with a correct answer."""