Decode fixed bytes in topic (umbracle#168)

* Decode fixed bytes in topic

* Update Changelog

CHANGELOG.md

@@ -1,6 +1,7 @@
 
 # 0.1.1 (Not released)
 
+- Parse `fixed bytes` type in event topic [[GH-168](https://github.com/umbracle/ethgo/issues/168)]
 - Introduce `NodeProvider` and update `Contract` and `abigen` format. [[GH-167](https://github.com/umbracle/ethgo/issues/167)]
 
 # 0.1.0 (5 March, 2022)

abi/topics.go

@@ -90,8 +90,11 @@ func ParseTopic(t *Type, topic ethgo.Hash) (interface{}, error) {
 	case KindAddress:
 		return readAddr(topic[:])
 
+	case KindFixedBytes:
+		return readFixedBytes(t, topic[:])
+
 	default:
-		return nil, fmt.Errorf("Topic parsing for type %s not supported", t.String())
+		return nil, fmt.Errorf("topic parsing for type %s not supported", t.String())
 	}
 }
 
@@ -150,7 +153,3 @@ func encodeTopicBool(v reflect.Value) (res ethgo.Hash, err error) {
 	}
 	return topicFalse, nil
 }
-
-func encodeTopicErr(val reflect.Value, str string) error {
-	return fmt.Errorf("cannot encode %s as %s", val.Type().String(), str)
-}

abi/topics_test.go

@@ -67,11 +67,19 @@ func TestIntegrationTopics(t *testing.T) {
 		fields []field
 	}{
 		{
+			// uint
 			fields: []field{
 				{"uint32", false, uint32(1), "1"},
 				{"uint8", true, uint8(10), "10"},
 			},
 		},
+		{
+			// fixed bytes
+			fields: []field{
+				{"bytes1", false, [1]byte{0x1}, "0x01"},
+				{"bytes1", true, [1]byte{0x1}, "0x01"},
+			},
+		},
 	}
 
 	for _, c := range cases {