diff --git a/NineChronicles.Headless.Tests/GraphTypes/ValidatorTypeTest.cs b/NineChronicles.Headless.Tests/GraphTypes/ValidatorTypeTest.cs
new file mode 100644
index 000000000..e96e125e5
--- /dev/null
+++ b/NineChronicles.Headless.Tests/GraphTypes/ValidatorTypeTest.cs
@@ -0,0 +1,78 @@
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Threading.Tasks;
+using GraphQL.Execution;
+using Libplanet.Types.Tx;
+using Nekoyume.ValidatorDelegation;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace NineChronicles.Headless.Tests.GraphTypes
+{
+    public class ValidatorTypeTest : GraphQLTestBase
+    {
+        public ValidatorTypeTest(ITestOutputHelper output) : base(output)
+        {
+        }
+
+        [Fact]
+        public async Task ExecuteQuery()
+        {
+            // Given
+            var block = BlockChain.Tip;
+            var blockHeight = 0L;
+            var tip = new Domain.Model.BlockChain.Block(
+                Hash: block.Hash,
+                PreviousHash: null,
+                Miner: ProposerPrivateKey.Address,
+                Index: blockHeight,
+                Timestamp: block.Timestamp,
+                StateRootHash: block.StateRootHash,
+                Transactions: ImmutableArray<Transaction>.Empty);
+            var worldState = BlockChain.GetNextWorldState();
+            var stateRootHash = block.StateRootHash;
+            var validatorAddress = ProposerPrivateKey.Address.ToHex();
+            var query =
+                $"query {{\n" +
+                $"  stateQuery(index: 0) {{\n" +
+                $"    validator(validatorAddress: \"{validatorAddress}\") {{\n" +
+                $"      power\n" +
+                $"      isActive\n" +
+                $"      totalShares\n" +
+                $"      jailed\n" +
+                $"      jailedUntil\n" +
+                $"      tombstoned\n" +
+                $"      commissionPercentage\n" +
+                $"      totalDelegated {{\n" +
+                $"        currency\n" +
+                $"        quantity\n" +
+                $"      }}\n" +
+                $"    }}\n" +
+                $"  }}\n" +
+                $"}}\n";
+
+            BlockChainRepository.Setup(repository => repository.GetBlock(blockHeight)).Returns(tip);
+            WorldStateRepository.Setup(repository => repository.GetWorldState(stateRootHash)).Returns(worldState);
+
+            // When
+            var result = await ExecuteQueryAsync(query);
+
+            // Then
+            var data = (Dictionary<string, object>)((ExecutionNode)result.Data!).ToValue()!;
+            var stateQueryResult = (Dictionary<string, object>)data["stateQuery"];
+            var validatorResult = (Dictionary<string, object>)stateQueryResult["validator"];
+
+            Assert.Equal("10,000,000,000,000,000,000", validatorResult["power"]);
+            Assert.Equal(true, validatorResult["isActive"]);
+            Assert.Equal("10,000,000,000,000,000,000", validatorResult["totalShares"]);
+            Assert.Equal(false, validatorResult["jailed"]);
+            Assert.Equal(-1L, validatorResult["jailedUntil"]);
+            Assert.Equal(false, validatorResult["tombstoned"]);
+            Assert.Equal($"{ValidatorDelegatee.DefaultCommissionPercentage}", validatorResult["commissionPercentage"]);
+
+            var totalDelegatedResult = (Dictionary<string, object>)validatorResult["totalDelegated"];
+            Assert.Equal("GUILD_GOLD", totalDelegatedResult["currency"]);
+            Assert.Equal("10.000000000000000000", totalDelegatedResult["quantity"]);
+        }
+    }
+}