Add tests for array of string serialization (#8913)

* add tests for array of string serialization

* update test file SHA

bin/utils/test_file_list.yaml

@@ -1,6 +1,6 @@
 ---
 # csharp-netcore test files and image for upload
 - filename: "samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools.Test/Api/PetApiTests.cs"
-  sha256: aceebba316148a2a803a15ef4e13bbd0b0a1b8d15006cd88adb9b39a620ee451
+  sha256: dae985015ba461297927d544a78267f2def35e07c3f14ca66468fd61e1fd1c26
 - filename: "samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools.Test/linux-logo.png"
   sha256: 0a67c32728197e942b13bdda064b73793f12f5c795f1e5cf35a3adf69c973230

samples/client/petstore/csharp-netcore/OpenAPIClient/src/Org.OpenAPITools.Test/Api/PetApiTests.cs

@@ -16,6 +16,8 @@ using System.Linq;
 using System.Reflection;
 using RestSharp;
 using Xunit;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
 
 using Org.OpenAPITools.Client;
 using Org.OpenAPITools.Api;
@@ -341,6 +343,30 @@ namespace Org.OpenAPITools.Test
             //petApi.Configuration.AddDefaultHeader("header_key2", "header_value2");
         }
 
+        [Fact]
+        public void TestArrayOfString()
+        {
+            ArrayTest at = new ArrayTest();
+            JsonSerializerSettings _serializerSettings = new JsonSerializerSettings
+            {
+                // OpenAPI generated types generally hide default constructors.
+                ConstructorHandling = ConstructorHandling.AllowNonPublicDefaultConstructor,
+                ContractResolver = new DefaultContractResolver
+                {
+                    NamingStrategy = new CamelCaseNamingStrategy
+                    {
+                        OverrideSpecifiedNames = false
+                    }
+                }
+            };
+            Assert.Equal("{}", JsonConvert.SerializeObject(at, _serializerSettings));
+
+            at.ArrayOfString = new List<string> { "Something here ..." };
+
+            Assert.Equal("{\"array_of_string\":[\"Something here ...\"]}", JsonConvert.SerializeObject(at, _serializerSettings));
+
+        }
+
         public void Dispose()
         {
             // remove the pet after testing