test: Add test code for delegator state query

NineChronicles.Headless.Tests/GraphTypes/DelegatorTypeTest.cs

@@ -0,0 +1,45 @@
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Numerics;
+using System.Threading.Tasks;
+using GraphQL.Execution;
+using Lib9c;
+using Libplanet.Types.Tx;
+using Nekoyume.ValidatorDelegation;
+using NineChronicles.Headless.GraphTypes;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace NineChronicles.Headless.Tests.GraphTypes
+{
+    public class DelegatorTypeTest
+    {
+        [Fact]
+        public async Task ExecuteQuery()
+        {
+            var lastDistributeHeight = 1L;
+            var share = new BigInteger(1000000000000000000) * 10;
+            var fav = Currencies.GuildGold * 10;
+
+            var result = await GraphQLTestUtils.ExecuteQueryAsync<DelegatorType>(
+                "{ lastDistributeHeight share fav { currency quantity } }",
+                source: new DelegatorType
+                {
+                    LastDistributeHeight = lastDistributeHeight,
+                    Share = share,
+                    Fav = fav,
+                }
+            );
+
+            // Then
+            var data = (Dictionary<string, object>)((ExecutionNode)result.Data!).ToValue()!;
+
+            Assert.Equal(lastDistributeHeight, data["lastDistributeHeight"]);
+            Assert.Equal(share.ToString("N0"), data["share"]);
+
+            var favResult = (Dictionary<string, object>)data["fav"];
+            Assert.Equal(fav.Currency.Ticker, favResult["currency"]);
+            Assert.Equal(fav.GetQuantityString(minorUnit: true), favResult["quantity"]);
+        }
+    }
+}