[dotnet] [bidi] Add SetFiles command in Input module (SeleniumHQ#15392)

Author: nvborisenko

Diff for: dotnet/src/webdriver/BiDi/Communication/Json/BiDiJsonSerializerContext.cs

@@ -170,6 +170,7 @@ namespace OpenQA.Selenium.BiDi.Communication.Json;
 
 [JsonSerializable(typeof(Modules.Input.PerformActionsCommand))]
 [JsonSerializable(typeof(Modules.Input.ReleaseActionsCommand))]
+[JsonSerializable(typeof(Modules.Input.SetFilesCommand))]
 [JsonSerializable(typeof(Modules.Input.Pointer.Down), TypeInfoPropertyName = "Input_Pointer_Down")]
 [JsonSerializable(typeof(Modules.Input.Pointer.Up), TypeInfoPropertyName = "Input_Pointer_Up")]
 [JsonSerializable(typeof(Modules.Input.Pointer.Move), TypeInfoPropertyName = "Input_Pointer_Move")]

Diff for: dotnet/src/webdriver/BiDi/Modules/BrowsingContext/BrowsingContextInputModule.cs

@@ -34,4 +34,9 @@ public Task ReleaseActionsAsync(ReleaseActionsOptions? options = null)
     {
         return inputModule.ReleaseActionsAsync(context, options);
     }
+
+    public Task SetFilesAsync(Script.ISharedReference element, IEnumerable<string> files, SetFilesOptions? options = null)
+    {
+        return inputModule.SetFilesAsync(context, element, files, options);
+    }
 }

Diff for: dotnet/src/webdriver/BiDi/Modules/Input/InputModule.cs

@@ -38,4 +38,11 @@ public async Task ReleaseActionsAsync(BrowsingContext.BrowsingContext context, R
 
         await Broker.ExecuteCommandAsync(new ReleaseActionsCommand(@params), options).ConfigureAwait(false);
     }
+
+    public async Task SetFilesAsync(BrowsingContext.BrowsingContext context, Script.ISharedReference element, IEnumerable<string> files, SetFilesOptions? options = null)
+    {
+        var @params = new SetFilesCommandParameters(context, element, files);
+
+        await Broker.ExecuteCommandAsync(new SetFilesCommand(@params), options).ConfigureAwait(false);
+    }
 }

Diff for: dotnet/src/webdriver/BiDi/Modules/Input/SetFilesCommand.cs

@@ -0,0 +1,30 @@
+// <copyright file="SetFilesCommand.cs" company="Selenium Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// </copyright>
+
+using OpenQA.Selenium.BiDi.Communication;
+using System.Collections.Generic;
+
+namespace OpenQA.Selenium.BiDi.Modules.Input;
+
+internal class SetFilesCommand(SetFilesCommandParameters @params)
+    : Command<SetFilesCommandParameters>(@params, "input.setFiles");
+
+internal record SetFilesCommandParameters(BrowsingContext.BrowsingContext Context, Script.ISharedReference Element, IEnumerable<string> Files) : CommandParameters;
+
+public record SetFilesOptions : CommandOptions;

Diff for: dotnet/test/common/BiDi/Input/SetFilesTest.cs

@@ -0,0 +1,54 @@
+// <copyright file="SetFilesTest.cs" company="Selenium Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// </copyright>
+
+using NUnit.Framework;
+using OpenQA.Selenium.BiDi.Modules.BrowsingContext;
+using System.IO;
+using System.Threading.Tasks;
+
+namespace OpenQA.Selenium.BiDi.Input;
+
+class SetFilesTest : BiDiTestFixture
+{
+    string _tempFile;
+
+    [SetUp]
+    public void SetUp()
+    {
+        _tempFile = Path.GetTempFileName();
+    }
+
+    [TearDown]
+    public void TearDown()
+    {
+        File.Delete(_tempFile);
+    }
+
+    [Test]
+    public async Task CanSetFiles()
+    {
+        driver.Url = UrlBuilder.WhereIs("formPage.html");
+
+        var nodes = await context.LocateNodesAsync(new Locator.Css("[id='upload']"));
+
+        await context.Input.SetFilesAsync(nodes[0], [_tempFile]);
+
+        Assert.That(driver.FindElement(By.Id("upload")).GetAttribute("value"), Does.EndWith(Path.GetFileName(_tempFile)));
+    }
+}