fix: use hex to encode address to string (blocto#39)

Author: Jan Lin

client/token.go

@@ -459,7 +459,7 @@ func (impl *TokenClientImpl) ListAccountTokens(ctx context.Context, owner models
 		}
 	`
 	variables := map[string]interface{}{
-		"owner_address": graphql.String(owner.PrefixZeroTrimmedHex()),
+		"owner_address": graphql.String(owner.ToHex()),
 		"limit":         batchSize,
 	}
 

models/account_address.go

@@ -21,6 +21,10 @@ func (addr AccountAddress) PrefixZeroTrimmedHex() string {
 	return "0x" + strings.TrimPrefix(hex, "0")
 }
 
+func (addr AccountAddress) ToHex() string {
+	return "0x" + hex.EncodeToString(addr[:])
+}
+
 func HexToAccountAddress(addr string) (AccountAddress, error) {
 	addr = strings.TrimPrefix(addr, "0x")
 	if len(addr)%2 == 1 {

models/account_address_test.go

@@ -0,0 +1,25 @@
+package models
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTodHex(t *testing.T) {
+	t.Run("address", func(t *testing.T) {
+		addr := "0x1111111111111111111111111111111111111111111111111111111111111111"
+		accountAddr, err := HexToAccountAddress(addr)
+		assert.NoError(t, err)
+
+		assert.Equal(t, addr, accountAddr.ToHex())
+	})
+
+	t.Run("addressWithZeroAfter0xPrefix", func(t *testing.T) {
+		addr := "0x0111111111111111111111111111111111111111111111111111111111111111"
+		accountAddr, err := HexToAccountAddress(addr)
+		assert.NoError(t, err)
+
+		assert.Equal(t, addr, accountAddr.ToHex())
+	})
+}