Add ParameterGrouping extension tests

 - Only C#/NodeJS supported right now.

AutoRest/Generators/CSharp/Azure.CSharp.Tests/AcceptanceTests.cs

@@ -16,6 +16,7 @@
 using Fixtures.Azure.AcceptanceTestsResourceFlattening;
 using Fixtures.Azure.AcceptanceTestsResourceFlattening.Models;
 using Fixtures.Azure.AcceptanceTestsSubscriptionIdApiVersion;
+using Fixtures.Azure.AcceptanceTestsAzureParameterGrouping;
 using Microsoft.Rest.Azure;
 using Microsoft.Rest.Generator.CSharp.Azure.Tests.Properties;
 using Microsoft.Rest.Generator.CSharp.Tests;
@@ -685,5 +686,51 @@ public void CustomNamedRequestIdTest()
                 Assert.Equal("123", response.RequestId);
             }
         }
+
+        public void ParameterGroupingTests()
+        {
+            const int body = 1234;
+            const string header = "header";
+            const int query = 21;
+            const string path = "path";
+
+            using (var client = new AutoRestParameterGroupingTestService(
+                Fixture.Uri, 
+                new TokenCredentials(Guid.NewGuid().ToString())))
+            {
+                //Valid required parameters
+                ParameterGroupingPostRequiredParameters requiredParameters = new ParameterGroupingPostRequiredParameters(body, path)
+                    {
+                        Header = header,
+                        Query = query
+                    };
+
+                client.ParameterGrouping.PostRequired(requiredParameters);
+
+                //Required parameters but null optional parameters
+                requiredParameters = new ParameterGroupingPostRequiredParameters(body, path);
+
+                client.ParameterGrouping.PostRequired(requiredParameters);
+
+                //Required parameters object is not null, but a required property of the object is
+                requiredParameters = new ParameterGroupingPostRequiredParameters(null, path);
+                Assert.Throws<ValidationException>(() => client.ParameterGrouping.PostRequired(requiredParameters));
+
+                //null required parameters
+                Assert.Throws<ValidationException>(() => client.ParameterGrouping.PostRequired(null));
+
+                //Valid optional parameters
+                ParameterGroupingPostOptionalParameters optionalParameters = new ParameterGroupingPostOptionalParameters()
+                    {
+                        Header = header,
+                        Query = query
+                    };
+
+                client.ParameterGrouping.PostOptional(optionalParameters);
+
+                //null optional paramters
+                client.ParameterGrouping.PostOptional(null);
+            }
+        }
     }
 }

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureParameterGrouping/AutoRestParameterGroupingTestService.cs

@@ -0,0 +1,198 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+// 
+// Code generated by Microsoft (R) AutoRest Code Generator 0.11.0.0
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+
+namespace Fixtures.Azure.AcceptanceTestsAzureParameterGrouping
+{
+    using System;
+    using System.Linq;
+    using System.Collections.Generic;
+    using System.Diagnostics;
+    using System.Net;
+    using System.Net.Http;
+    using System.Net.Http.Headers;
+    using System.Text;
+    using System.Text.RegularExpressions;
+    using System.Threading;
+    using System.Threading.Tasks;
+    using Microsoft.Rest;
+    using Microsoft.Rest.Serialization;
+    using Newtonsoft.Json;
+    using Microsoft.Rest.Azure;
+    using Models;
+
+    /// <summary>
+    /// Test Infrastructure for AutoRest
+    /// </summary>
+    public partial class AutoRestParameterGroupingTestService : ServiceClient<AutoRestParameterGroupingTestService>, IAutoRestParameterGroupingTestService, IAzureClient
+    {
+        /// <summary>
+        /// The base URI of the service.
+        /// </summary>
+        public Uri BaseUri { get; set; }
+
+        /// <summary>
+        /// Gets or sets json serialization settings.
+        /// </summary>
+        public JsonSerializerSettings SerializationSettings { get; private set; }
+
+        /// <summary>
+        /// Gets or sets json deserialization settings.
+        /// </summary>
+        public JsonSerializerSettings DeserializationSettings { get; private set; }        
+
+        /// <summary>
+        /// The management credentials for Azure.
+        /// </summary>
+        public ServiceClientCredentials Credentials { get; private set; }
+
+        /// <summary>
+        /// Gets or sets the preferred language for the response.
+        /// </summary>
+        public string AcceptLanguage { get; set; }
+
+        /// <summary>
+        /// The retry timeout for Long Running Operations.
+        /// </summary>
+        public int? LongRunningOperationRetryTimeout { get; set; }
+
+        public virtual IParameterGroupingOperations ParameterGrouping { get; private set; }
+
+        /// <summary>
+        /// Initializes a new instance of the AutoRestParameterGroupingTestService class.
+        /// </summary>
+        public AutoRestParameterGroupingTestService() : base()
+        {
+            this.Initialize();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the AutoRestParameterGroupingTestService class.
+        /// </summary>
+        /// <param name='handlers'>
+        /// Optional. The set of delegating handlers to insert in the http
+        /// client pipeline.
+        /// </param>
+        public AutoRestParameterGroupingTestService(params DelegatingHandler[] handlers) : base(handlers)
+        {
+            this.Initialize();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the AutoRestParameterGroupingTestService class.
+        /// </summary>
+        /// <param name='rootHandler'>
+        /// Optional. The http client handler used to handle http transport.
+        /// </param>
+        /// <param name='handlers'>
+        /// Optional. The set of delegating handlers to insert in the http
+        /// client pipeline.
+        /// </param>
+        public AutoRestParameterGroupingTestService(HttpClientHandler rootHandler, params DelegatingHandler[] handlers) : base(rootHandler, handlers)
+        {
+            this.Initialize();
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the AutoRestParameterGroupingTestService class.
+        /// </summary>
+        /// <param name='baseUri'>
+        /// Optional. The base URI of the service.
+        /// </param>
+        /// <param name='handlers'>
+        /// Optional. The set of delegating handlers to insert in the http
+        /// client pipeline.
+        /// </param>
+        public AutoRestParameterGroupingTestService(Uri baseUri, params DelegatingHandler[] handlers) : this(handlers)
+        {
+            if (baseUri == null)
+            {
+                throw new ArgumentNullException("baseUri");
+            }
+            this.BaseUri = baseUri;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the AutoRestParameterGroupingTestService class.
+        /// </summary>
+        /// <param name='credentials'>
+        /// Required. The management credentials for Azure.
+        /// </param>
+        /// <param name='handlers'>
+        /// Optional. The set of delegating handlers to insert in the http
+        /// client pipeline.
+        /// </param>
+        public AutoRestParameterGroupingTestService(ServiceClientCredentials credentials, params DelegatingHandler[] handlers) : this(handlers)
+        {
+            if (credentials == null)
+            {
+                throw new ArgumentNullException("credentials");
+            }
+            this.Credentials = credentials;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the AutoRestParameterGroupingTestService class.
+        /// </summary>
+        /// <param name='baseUri'>
+        /// Optional. The base URI of the service.
+        /// </param>
+        /// <param name='credentials'>
+        /// Required. The management credentials for Azure.
+        /// </param>
+        /// <param name='handlers'>
+        /// Optional. The set of delegating handlers to insert in the http
+        /// client pipeline.
+        /// </param>
+        public AutoRestParameterGroupingTestService(Uri baseUri, ServiceClientCredentials credentials, params DelegatingHandler[] handlers) : this(handlers)
+        {
+            if (baseUri == null)
+            {
+                throw new ArgumentNullException("baseUri");
+            }
+            if (credentials == null)
+            {
+                throw new ArgumentNullException("credentials");
+            }
+            this.BaseUri = baseUri;
+            this.Credentials = credentials;
+        }
+
+        /// <summary>
+        /// Initializes client properties.
+        /// </summary>
+        private void Initialize()
+        {
+            this.ParameterGrouping = new ParameterGroupingOperations(this);
+            this.BaseUri = new Uri("https://localhost");
+            this.AcceptLanguage = "en-US";
+            if (this.Credentials != null)
+            {
+                this.Credentials.InitializeServiceClient(this);
+            }
+            SerializationSettings = new JsonSerializerSettings
+            {
+                Formatting = Formatting.Indented,
+                DateFormatHandling = DateFormatHandling.IsoDateFormat,
+                DateTimeZoneHandling = DateTimeZoneHandling.Utc,
+                NullValueHandling = NullValueHandling.Ignore,
+                ReferenceLoopHandling = ReferenceLoopHandling.Serialize,
+                ContractResolver = new ReadOnlyJsonContractResolver()
+            };
+            SerializationSettings.Converters.Add(new ResourceJsonConverter()); 
+            DeserializationSettings = new JsonSerializerSettings{
+                DateFormatHandling = DateFormatHandling.IsoDateFormat,
+                DateTimeZoneHandling = DateTimeZoneHandling.Utc,
+                NullValueHandling = NullValueHandling.Ignore,
+                ReferenceLoopHandling = ReferenceLoopHandling.Serialize,
+                ContractResolver = new ReadOnlyJsonContractResolver()
+            };
+            DeserializationSettings.Converters.Add(new ResourceJsonConverter()); 
+            DeserializationSettings.Converters.Add(new CloudErrorJsonConverter()); 
+        }    
+    }
+}

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureParameterGrouping/AutoRestParameterGroupingTestServiceExtensions.cs

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+// 
+// Code generated by Microsoft (R) AutoRest Code Generator 0.11.0.0
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+
+namespace Fixtures.Azure.AcceptanceTestsAzureParameterGrouping
+{
+    using System;
+    using System.Collections;
+    using System.Collections.Generic;
+    using System.Threading;
+    using System.Threading.Tasks;
+    using Microsoft.Rest;
+    using Microsoft.Rest.Azure;
+    using Models;
+
+    public static partial class AutoRestParameterGroupingTestServiceExtensions
+    {
+    }
+}

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureParameterGrouping/IAutoRestParameterGroupingTestService.cs

@@ -0,0 +1,60 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+// 
+// Code generated by Microsoft (R) AutoRest Code Generator 0.11.0.0
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+
+namespace Fixtures.Azure.AcceptanceTestsAzureParameterGrouping
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Net.Http;
+    using System.Threading;
+    using System.Threading.Tasks;
+    using Newtonsoft.Json;
+    using Microsoft.Rest;
+    using Microsoft.Rest.Azure;
+    using Models;
+
+    /// <summary>
+    /// Test Infrastructure for AutoRest
+    /// </summary>
+    public partial interface IAutoRestParameterGroupingTestService
+    {
+        /// <summary>
+        /// The base URI of the service.
+        /// </summary>
+        Uri BaseUri { get; set; }
+
+        /// <summary>
+        /// Gets or sets json serialization settings.
+        /// </summary>
+        JsonSerializerSettings SerializationSettings { get; }
+
+        /// <summary>
+        /// Gets or sets json deserialization settings.
+        /// </summary>
+        JsonSerializerSettings DeserializationSettings { get; }
+
+        /// <summary>
+        /// The management credentials for Azure.
+        /// </summary>
+        ServiceClientCredentials Credentials { get; }
+
+        /// <summary>
+        /// Gets or sets the preferred language for the response.
+        /// </summary>
+        string AcceptLanguage { get; set; }
+
+        /// <summary>
+        /// The retry timeout for Long Running Operations.
+        /// </summary>
+        int? LongRunningOperationRetryTimeout { get; set; }
+
+
+        IParameterGroupingOperations ParameterGrouping { get; }
+
+    }
+}

AutoRest/Generators/CSharp/Azure.CSharp.Tests/Expected/AcceptanceTests/AzureParameterGrouping/IParameterGroupingOperations.cs

@@ -0,0 +1,52 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+// 
+// Code generated by Microsoft (R) AutoRest Code Generator 0.11.0.0
+// Changes may cause incorrect behavior and will be lost if the code is
+// regenerated.
+
+namespace Fixtures.Azure.AcceptanceTestsAzureParameterGrouping
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Net.Http;
+    using System.Threading;
+    using System.Threading.Tasks;
+    using Microsoft.Rest;
+    using Microsoft.Rest.Azure;
+    using Models;
+
+    /// <summary>
+    /// ParameterGroupingOperations operations.
+    /// </summary>
+    public partial interface IParameterGroupingOperations
+    {
+        /// <summary>
+        /// Post a bunch of required parameters grouped
+        /// </summary>
+        /// <param name='parameters'>
+        /// Additional parameters for the operation
+        /// </param>
+        /// <param name='customHeaders'>
+        /// The headers that will be added to request.
+        /// </param>
+        /// <param name='cancellationToken'>
+        /// The cancellation token.
+        /// </param>
+        Task<AzureOperationResponse> PostRequiredWithHttpMessagesAsync(ParameterGroupingPostRequiredParameters parameters, Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
+        /// <summary>
+        /// Post a bunch of optional parameters grouped
+        /// </summary>
+        /// <param name='parameters'>
+        /// Additional parameters for the operation
+        /// </param>
+        /// <param name='customHeaders'>
+        /// The headers that will be added to request.
+        /// </param>
+        /// <param name='cancellationToken'>
+        /// The cancellation token.
+        /// </param>
+        Task<AzureOperationResponse> PostOptionalWithHttpMessagesAsync(ParameterGroupingPostOptionalParameters parameters = default(ParameterGroupingPostOptionalParameters), Dictionary<string, List<string>> customHeaders = null, CancellationToken cancellationToken = default(CancellationToken));
+    }
+}