diff --git a/test/test_decoder.py b/test/test_decoder.py
new file mode 100644
index 0000000..153c500
--- /dev/null
+++ b/test/test_decoder.py
@@ -0,0 +1,38 @@
+import json
+
+import pytest
+
+from openpaygo import OpenPAYGOTokenDecoder, TokenType
+
+with open("test/test_tokens.jsonl") as f:
+    sample_data = [json.loads(line) for line in f]
+
+
+@pytest.fixture
+def decoder():
+    return OpenPAYGOTokenDecoder()
+
+
+@pytest.fixture
+def token_type_lookup():
+    return {
+        "ADD_TIME": TokenType.ADD_TIME,
+        "SET_TIME": TokenType.SET_TIME,
+        "DISABLE_PAYG": TokenType.DISABLE_PAYG,
+        "COUNTER_SYNC": TokenType.COUNTER_SYNC,
+    }
+
+
+@pytest.mark.parametrize("data", sample_data)
+def test_parse_token(decoder, token_type_lookup, data):
+    token_value, token_type, new_count, _ = decoder.decode_token(
+        secret_key=data["key"],
+        starting_code=data["starting_code"],
+        restricted_digit_set=data["restricted_digit_set"],
+        token=data["token"],
+        count=data["count"],
+    )
+
+    assert token_value == data["value_raw"]
+    assert token_type == token_type_lookup[data["token_type"]]
+    assert new_count == data["new_count"]