Change ValidatorPower type from BigInt to string

CHANGES.md

@@ -6,6 +6,11 @@ Version 5.4.2
 
 To be released.
 
+ -  (Libplanet.Explorer) Changed `ValidatorPower` type of `VoteType` from
+    `BigIntGraphType` to `StringGraphType`.  [[#4005]]
+
+[#4005]: https://github.com/planetarium/libplanet/pull/4005
+
 
 Version 5.4.1
 -------------

test/Libplanet.Explorer.Tests/GraphTypes/BlockTypeTest.cs

@@ -122,7 +122,7 @@ public async void Query()
                             { "blockHash", lastVotes[0].BlockHash.ToString() },
                             { "timestamp", new DateTimeOffsetGraphType().Serialize(lastVotes[0].Timestamp) },
                             { "validatorPublicKey", lastVotes[0].ValidatorPublicKey.ToString() },
-                            { "validatorPower", lastVotes[0].ValidatorPower },
+                            { "validatorPower", lastVotes[0].ValidatorPower?.ToString("N0") },
                             { "flag", lastVotes[0].Flag.ToString() },
                             { "signature", ByteUtil.Hex(lastVotes[0].Signature) },
                         }

test/Libplanet.Explorer.Tests/GraphTypes/VoteTypeTest.cs

@@ -57,7 +57,7 @@ public async void Query()
             Assert.Equal(vote.BlockHash.ToString(), resultData["blockHash"]);
             Assert.Equal(new DateTimeOffsetGraphType().Serialize(vote.Timestamp), resultData["timestamp"]);
             Assert.Equal(vote.ValidatorPublicKey.ToString(), resultData["validatorPublicKey"]);
-            Assert.Equal(vote.ValidatorPower, resultData["validatorPower"]);
+            Assert.Equal(vote.ValidatorPower?.ToString("N0"), resultData["validatorPower"]);
             Assert.Equal(vote.Flag.ToString(), resultData["flag"]);
             Assert.Equal(ByteUtil.Hex(vote.Signature), resultData["signature"]);
         }

tools/Libplanet.Explorer/GraphTypes/VoteType.cs

@@ -30,10 +30,10 @@ public VoteType()
                 "ValidatorPublicKey",
                 description: "Public key of the validator which is subject of the vote.",
                 resolve: ctx => ctx.Source.ValidatorPublicKey);
-            Field<BigIntGraphType>(
+            Field<StringGraphType>(
                 "ValidatorPower",
                 description: "Power of the validator which is subject of the vote.",
-                resolve: ctx => ctx.Source.ValidatorPower);
+                resolve: ctx => ctx.Source.ValidatorPower?.ToString("N0"));
             Field<NonNullGraphType<VoteFlagType>>(
                 "Flag",
                 description: "Flag of the vote",