diff --git a/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/Payload/Xml/XmlTests.cs b/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/Payload/Xml/XmlTests.cs
index 9a3976b4932..08d127442eb 100644
--- a/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/Payload/Xml/XmlTests.cs
+++ b/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/Payload/Xml/XmlTests.cs
@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 
 using System;
+using System.ClientModel;
 using System.Collections.Generic;
 using System.Threading.Tasks;
 using NUnit.Framework;
@@ -388,5 +389,14 @@ public Task GetModelWithDatetime() => Test(async (host) =>
             Assert.AreEqual(DateTimeOffset.Parse("2022-08-26T18:38:00Z"), model.Rfc3339);
             Assert.AreEqual(DateTimeOffset.Parse("Fri, 26 Aug 2022 14:38:00 GMT"), model.Rfc7231);
         });
+
+        [SpectorTest]
+        public Task GetXmlErrorValue() => Test((host) =>
+        {
+            var exception = Assert.ThrowsAsync<ClientResultException>(
+                async () => await new XmlClient(host, null).GetXmlErrorValueClient().GetAsync());
+            Assert.AreEqual(400, exception!.Status);
+            return Task.CompletedTask;
+        });
     }
 }
diff --git a/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/SpecialWords/SpecialWordsTests.Models.cs b/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/SpecialWords/SpecialWordsTests.Models.cs
index f6623d5bfc7..1027d52e8ee 100644
--- a/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/SpecialWords/SpecialWordsTests.Models.cs
+++ b/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/SpecialWords/SpecialWordsTests.Models.cs
@@ -285,5 +285,23 @@ public Task ModelProperties_SameAsModelAsync() => Test(async (host) =>
             var response = await client.SameAsModelAsync(body);
             NUnit.Framework.Assert.AreEqual(204, response.GetRawResponse().Status);
         });
+
+        [SpectorTest]
+        public Task ModelProperties_DictMethodsAsync() => Test(async (host) =>
+        {
+            DictMethods body = new DictMethods("ok", "ok", "ok", "ok", "ok", "ok", "ok", "ok", "ok", "ok");
+            var client = new SpecialWordsClient(host, null).GetModelPropertiesClient();
+            var response = await client.DictMethodsAsync(body);
+            NUnit.Framework.Assert.AreEqual(204, response.GetRawResponse().Status);
+        });
+
+        [SpectorTest]
+        public Task ModelProperties_WithListAsync() => Test(async (host) =>
+        {
+            ModelWithList body = new ModelWithList("ok");
+            var client = new SpecialWordsClient(host, null).GetModelPropertiesClient();
+            var response = await client.WithListAsync(body);
+            NUnit.Framework.Assert.AreEqual(204, response.GetRawResponse().Status);
+        });
     }
 }
diff --git a/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/_Type/Property/AdditionalProperties/AdditionalPropertiesTests.cs b/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/_Type/Property/AdditionalProperties/AdditionalPropertiesTests.cs
index 0550b638447..926d1cd492f 100644
--- a/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/_Type/Property/AdditionalProperties/AdditionalPropertiesTests.cs
+++ b/packages/http-client-csharp/generator/TestProjects/Spector.Tests/Http/_Type/Property/AdditionalProperties/AdditionalPropertiesTests.cs
@@ -841,6 +841,45 @@ public Task SpreadRecordNonDiscriminatedUnion2Put() => Test(async host =>
             Assert.AreEqual(204, response.GetRawResponse().Status);
         });
 
+        [SpectorTest]
+        public Task SpreadRecordNonDiscriminatedUnion3Get() => Test(async host =>
+        {
+            var response = await new AdditionalPropertiesClient(host, null).GetSpreadRecordNonDiscriminatedUnion3Client().GetAsync();
+            Assert.AreEqual(200, response.GetRawResponse().Status);
+            Assert.AreEqual("abc", response.Value.Name);
+            Assert.AreEqual(2, response.Value.AdditionalProperties.Count);
+            using var jsonDoc = System.Text.Json.JsonDocument.Parse(response.Value.AdditionalProperties["prop1"].ToMemory());
+            var prop1Items = jsonDoc.RootElement.EnumerateArray()
+                .Select(e => ModelReaderWriter.Read<WidgetData2>(BinaryData.FromString(e.GetRawText())))
+                .ToList();
+            Assert.AreEqual(2, prop1Items.Count);
+            Assert.AreEqual("2021-01-01T00:00:00Z", prop1Items[0]!.Start);
+            Assert.AreEqual("2021-01-01T00:00:00Z", prop1Items[1]!.Start);
+            var prop2 = ModelReaderWriter.Read<WidgetData1>(response.Value.AdditionalProperties["prop2"]);
+            Assert.AreEqual(new DateTimeOffset(2021, 1, 1, 0, 0, 0, TimeSpan.Zero), prop2!.Start);
+            Assert.AreEqual(new DateTimeOffset(2021, 1, 2, 0, 0, 0, TimeSpan.Zero), prop2.End);
+        });
+
+        [SpectorTest]
+        public Task SpreadRecordNonDiscriminatedUnion3Put() => Test(async host =>
+        {
+            var prop1BinaryData = BinaryData.FromString(
+                "[{\"kind\":\"kind1\",\"start\":\"2021-01-01T00:00:00Z\"},{\"kind\":\"kind1\",\"start\":\"2021-01-01T00:00:00Z\"}]");
+            var value = new SpreadRecordForNonDiscriminatedUnion3("abc")
+            {
+                AdditionalProperties =
+                {
+                    ["prop1"] = prop1BinaryData,
+                    ["prop2"] = ModelReaderWriter.Write(new WidgetData1(new DateTimeOffset(2021, 1, 1, 0, 0, 0, TimeSpan.Zero))
+                    {
+                        End = new DateTimeOffset(2021, 1, 2, 0, 0, 0, TimeSpan.Zero)
+                    })
+                }
+            };
+            var response = await new AdditionalPropertiesClient(host, null).GetSpreadRecordNonDiscriminatedUnion3Client().PutAsync(value);
+            Assert.AreEqual(204, response.GetRawResponse().Status);
+        });
+
         [SpectorTest]
         public Task SpreadRecordUnionGet() => Test(async host =>
         {