create test for consistency between MapConverters

Author: rose-a

tests/GraphQL.Client.Serializer.Tests/ConsistencyTests.cs

@@ -0,0 +1,62 @@
+using System.Collections.Generic;
+using FluentAssertions;
+using FluentAssertions.Execution;
+using GraphQL.Client.Serializer.Newtonsoft;
+using GraphQL.Client.Serializer.SystemTextJson;
+using Newtonsoft.Json;
+using Xunit;
+
+namespace GraphQL.Client.Serializer.Tests
+{
+    public class ConsistencyTests
+    {
+        [Fact]
+        public void MapConvertersShouldBehaveConsistent()
+        {
+            const string json = @"{
+                ""array"": [
+                  ""some stuff"",
+                  ""something else""
+                ],
+                ""string"": ""this is a string"",
+                ""boolean"": true,
+                ""number"": 1234.567,
+                ""nested object"": {
+                    ""prop1"": false
+                },
+                ""arrayOfObjects"": [
+                  {""number"": 1234.567},
+                  {""number"": 567.8}
+                ]
+            }";
+            
+            var newtonsoftSerializer = new NewtonsoftJsonSerializer();
+            var systemTextJsonSerializer = new SystemTextJsonSerializer();
+
+            var newtonsoftMap = JsonConvert.DeserializeObject<Map>(json, newtonsoftSerializer.JsonSerializerSettings);
+            var systemTextJsonMap = System.Text.Json.JsonSerializer.Deserialize<Map>(json, systemTextJsonSerializer.Options);
+
+
+            using(new AssertionScope())
+            {
+                CompareMaps(newtonsoftMap, systemTextJsonMap);
+            }
+
+            newtonsoftMap.Should().BeEquivalentTo(systemTextJsonMap, options => options
+                .RespectingRuntimeTypes());
+        }
+
+        private void CompareMaps(Dictionary<string, object> first, Dictionary<string, object> second)
+        {
+            foreach (var keyValuePair in first)
+            {
+                second.Should().ContainKey(keyValuePair.Key);
+                second[keyValuePair.Key].Should().BeOfType(keyValuePair.Value.GetType());
+                if(keyValuePair.Value is Dictionary<string, object> map)
+                    CompareMaps(map, (Dictionary<string, object>)second[keyValuePair.Key]);
+                else
+                    keyValuePair.Value.Should().BeEquivalentTo(second[keyValuePair.Key]);
+            }
+        }
+    }
+}