[dotnet] implement getting and setting permissions on Safari

dotnet/src/webdriver/Safari/SafariDriver.cs

@@ -17,6 +17,7 @@
 // </copyright>
 
 using System;
+using System.Collections.Generic;
 using OpenQA.Selenium.Remote;
 
 namespace OpenQA.Selenium.Safari
@@ -61,6 +62,9 @@ namespace OpenQA.Selenium.Safari
     /// </example>
     public class SafariDriver : WebDriver
     {
+        private const string GetPermissionsCommand = "getPermissions";
+        private const string SetPermissionsCommand = "setPermissions";
+
         /// <summary>
         /// Initializes a new instance of the <see cref="SafariDriver"/> class.
         /// </summary>
@@ -140,6 +144,37 @@ public SafariDriver(SafariDriverService service, SafariOptions options)
         public SafariDriver(SafariDriverService service, SafariOptions options, TimeSpan commandTimeout)
             : base(new DriverServiceCommandExecutor(service, commandTimeout), ConvertOptionsToCapabilities(options))
         {
+            this.AddCustomSafariCommand(GetPermissionsCommand, HttpCommandInfo.GetCommand, "/session/{sessionId}/apple/permissions");
+            this.AddCustomSafariCommand(SetPermissionsCommand, HttpCommandInfo.PostCommand, "/session/{sessionId}/apple/permissions");
+        }
+
+        /// <summary>
+        /// Set permission of an item on the browser. The only supported permission at this time is "getUserMedia".
+        /// </summary>
+        /// <param name="permissionName">The name of the item to set permission on.</param>
+        /// <param name="permissionValue">Whether the permission has been granted.</param>
+        public void SetPermission(string permissionName, bool permissionValue)
+        {
+            if (string.IsNullOrEmpty(permissionName))
+            {
+                throw new ArgumentNullException("permissionName", "permission must not be null or the empty string");
+            }
+
+            Dictionary<string, object> permissions = new Dictionary<string, object>();
+            permissions[permissionName] = permissionValue;
+            Dictionary<string, object> parameters = new Dictionary<string, object>();
+            parameters["permissions"] = permissions;
+            this.Execute(SetPermissionsCommand, parameters);
+        }
+
+        /// <summary>
+        /// Returns Each available permission item and whether it is allowed or not.
+        /// </summary>
+        /// <returns>whether the item is allowed or not.</returns>
+        public Object GetPermissions()
+        {
+            Response response = this.Execute(GetPermissionsCommand, null);
+            return response.Value;
         }
 
         /// <summary>
@@ -167,5 +202,11 @@ private static ICapabilities ConvertOptionsToCapabilities(SafariOptions options)
 
             return options.ToCapabilities();
         }
+
+        private void AddCustomSafariCommand(string commandName, string method, string resourcePath)
+        {
+            HttpCommandInfo commandInfoToAdd = new HttpCommandInfo(method, resourcePath);
+            this.CommandExecutor.TryAddCommand(commandName, commandInfoToAdd);
+        }
     }
 }