chore: move TestDecodeHex class into param_utils_test to better match location

Signed-off-by: exploreriii <133720349+exploreriii@users.noreply.github.com>

Author: exploreriii

tests/tck/contract_handler_test.py

@@ -11,37 +11,11 @@
 from tck.errors import JsonRpcError
 from tck.handlers import contract as contract_handlers
 from tck.param.contract import CreateContractParams
-from tck.util.param_utils import decode_hex
 
 
 pytestmark = pytest.mark.unit
 
 
-class TestDecodeHex:
-    def test_decodes_plain_hex(self):
-        assert decode_hex("60006000") == b"\x60\x00\x60\x00"
-
-    def test_decodes_0x_prefixed_hex(self):
-        assert decode_hex("0x60006000") == b"\x60\x00\x60\x00"
-
-    def test_rejects_non_hex_characters(self):
-        with pytest.raises(ValueError):
-            decode_hex("0xZZ")
-
-    def test_rejects_odd_length(self):
-        with pytest.raises(ValueError):
-            decode_hex("0x123")
-
-    def test_rejects_embedded_whitespace(self):
-        """bytes.fromhex alone would accept "60 00"."""
-        with pytest.raises(ValueError):
-            decode_hex("60 00")
-
-    def test_rejects_surrounding_whitespace(self):
-        with pytest.raises(ValueError):
-            decode_hex(" 6000\n")
-
-
 class TestCreateContractParams:
     def test_parses_all_params(self):
         params = CreateContractParams.parse_json_params(

tests/tck/param_utils_test.py

@@ -0,0 +1,35 @@
+"""Test cases for the TCK param_utils helpers."""
+
+from __future__ import annotations
+
+import pytest
+
+from tck.util.param_utils import decode_hex
+
+
+pytestmark = pytest.mark.unit
+
+
+class TestDecodeHex:
+    def test_decodes_plain_hex(self):
+        assert decode_hex("60006000") == b"\x60\x00\x60\x00"
+
+    def test_decodes_0x_prefixed_hex(self):
+        assert decode_hex("0x60006000") == b"\x60\x00\x60\x00"
+
+    def test_rejects_non_hex_characters(self):
+        with pytest.raises(ValueError):
+            decode_hex("0xZZ")
+
+    def test_rejects_odd_length(self):
+        with pytest.raises(ValueError):
+            decode_hex("0x123")
+
+    def test_rejects_embedded_whitespace(self):
+        """bytes.fromhex alone would accept "60 00"."""
+        with pytest.raises(ValueError):
+            decode_hex("60 00")
+
+    def test_rejects_surrounding_whitespace(self):
+        with pytest.raises(ValueError):
+            decode_hex(" 6000\n")