[fix] normalize to <answer></answer>

tests/test_cryptarithm.py

@@ -111,20 +111,25 @@ def test_cryptarithm_score_answer():
     puzzle = dataset[0]
     correct_answer_str = puzzle["answer"]  # e.g. "A=1,B=7,..."
 
-    # 1) Missing 'ANSWER:' => score should be 0.0
+    # 1) Missing '<answer>' => score should be 0.0
     score = dataset.score_answer(answer=None, answer_str=correct_answer_str)
-    assert score == 0.0, f"Expected 0.0 when missing 'ANSWER:' prefix, got {score}"
+    assert score == 0.0, f"Expected 0.0 when missing '<answer>' prefix, got {score}"
 
     # 2) Correct mapping => expecting 1.0
-    user_answer = f"ANSWER:\n{correct_answer_str}"
+    user_answer = f"<answer>{correct_answer_str}</answer>"
     score = dataset.score_answer(answer=user_answer, answer_str=correct_answer_str)
     assert score == 1.0, f"Expected 1.0 for perfectly correct answer, got {score}"
 
+    # 2.1) Missing end tag => expecting 1.0
+    user_answer = f"<answer>{correct_answer_str}"
+    score = dataset.score_answer(answer=user_answer, answer_str=correct_answer_str)
+    assert score == 0.0, f"Expected 0.0 for missing end answer tag, got {score}"
+
     # 3) Mismatch number of pairs => score should be 0.1
     # For instance, drop the last pair
     splitted = correct_answer_str.split(",")
     mismatch_str = ",".join(splitted[:-1])
-    user_answer = f"ANSWER:\n{mismatch_str}"
+    user_answer = f"<answer>{mismatch_str}</answer>"
     score = dataset.score_answer(answer=user_answer, answer_str=correct_answer_str)
     assert score == 0.1, f"Expected 0.1 when #pairs does not match, got {score}"
 
@@ -132,7 +137,7 @@ def test_cryptarithm_score_answer():
     splitted = correct_answer_str.split(",")
     splitted[0] = splitted[0].replace("=", "")  # remove '=' in the first pair
     parse_error_str = ",".join(splitted)
-    user_answer = f"ANSWER:\n{parse_error_str}"
+    user_answer = f"<answer>{parse_error_str}</answer>"
     score = dataset.score_answer(answer=user_answer, answer_str=correct_answer_str)
     assert score == 0.15, f"Expected 0.15 when parsing fails on at least one pair, got {score}"
 
@@ -142,7 +147,7 @@ def test_cryptarithm_score_answer():
     if len(splitted) > 1:
         splitted[0] = splitted[1]  # Duplicate the second pair in the first position
     duplicates_str = ",".join(splitted)
-    user_answer = f"ANSWER:\n{duplicates_str}"
+    user_answer = f"<answer>{duplicates_str}</answer>"
     score = dataset.score_answer(answer=user_answer, answer_str=correct_answer_str)
     assert score == 0.3, f"Expected 0.3 if the final dict has fewer unique alphabets, got {score}"
 
@@ -166,7 +171,7 @@ def test_cryptarithm_score_answer():
         i += 1
 
     partial_answer_str = ",".join(new_pairs)
-    user_answer = f"ANSWER:\n{partial_answer_str}"
+    user_answer = f"<answer>{partial_answer_str}</answer>"
     score = dataset.score_answer(answer=user_answer, answer_str=correct_answer_str)
 
     # The formula is (num_correct / total) * 0.7 + 0.3