fix tests

Author: Olivier Leonard

samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools.Test/Api/BodyApiTests.cs

@@ -97,7 +97,7 @@ public void TestEchoBodyFreeFormObjectResponseStringTest()
         [Fact]
         public void TestEchoBodyPetTest()
         {
-            Pet? pet = new Pet(123, "cat", new Category() { Id = 12, Name = "Test" }, new List<string>(){"http://google.com"},null, null);
+            Pet? pet = new Pet(123, "cat", new Category() { Id = 12, Name = "Test" }, new List<string>(){"http://google.com"});
             var response = instance.TestEchoBodyPet(pet);
             Assert.IsType<Pet>(response);
         }

samples/client/echo_api/csharp-restsharp/src/Org.OpenAPITools.Test/CustomTest.cs

@@ -23,7 +23,7 @@ public void TestEchoBodyPet()
             Pet p = bodyApi.TestEchoBodyPet(queryObject);
             Assert.NotNull(p);
             Assert.Equal("Hello World", p.Name);
-            Assert.Equal(12345L, p.Id);
+            Assert.Equal(12345L, p.Id.Value);
 
             // response is empty body
             Pet p2 = bodyApi.TestEchoBodyPet(null);