Bidi: Implement default context

lib/PuppeteerSharp.Nunit/TestExpectations/TestExpectations.local.json

@@ -330,21 +330,6 @@
       "FAIL"
     ]
   },
-  {
-    "comment": "This is part of organizing the webdriver bidi implementation, We will remove it one by one",
-    "testIdPattern": "[defaultbrowsercontext.spec] *",
-    "platforms": [
-      "darwin",
-      "linux",
-      "win32"
-    ],
-    "parameters": [
-      "webDriverBiDi"
-    ],
-    "expectations": [
-      "FAIL"
-    ]
-  },
   {
     "comment": "This is part of organizing the webdriver bidi implementation, We will remove it one by one",
     "testIdPattern": "[browsercontext.spec] *",

lib/PuppeteerSharp.Tests/BrowserContextTests/DefaultBrowserContextTests.cs

@@ -7,10 +7,6 @@ namespace PuppeteerSharp.Tests.BrowserContextTests
 {
     public class DefaultBrowserContextTests : PuppeteerPageBaseTest
     {
-        public DefaultBrowserContextTests() : base()
-        {
-        }
-
         [SetUp]
         public async Task CreateNewPageAsync()
         {

lib/PuppeteerSharp/Bidi/BidiBrowser.cs

@@ -58,6 +58,9 @@ private BidiBrowser(Core.Browser browserCore, LaunchOptions options, ILoggerFact
     /// <inheritdoc />
     public override ITarget Target => _target;
 
+    /// <inheritdoc/>
+    public override IBrowserContext DefaultContext => _browserContexts.FirstOrDefault(b => b.Id == BrowserCore.DefaultUserContext.Id);
+
     internal static string[] SubscribeModules { get; } =
     [
         "browsingContext",

lib/PuppeteerSharp/Bidi/BidiBrowserContext.cs

@@ -99,7 +99,10 @@ internal static BidiBrowserContext From(
         UserContext userContext,
         BidiBrowserContextOptions options)
     {
-        var context = new BidiBrowserContext(browser, userContext, options);
+        var context = new BidiBrowserContext(browser, userContext, options)
+        {
+            Id = userContext.Id,
+        };
         context.Initialize();
         return context;
     }

lib/PuppeteerSharp/Bidi/Core/Browser.cs

@@ -23,6 +23,7 @@
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 using PuppeteerSharp.Helpers;
 using WebDriverBiDi.Browser;
@@ -49,6 +50,8 @@ internal sealed class Browser(Session session) : IDisposable
 
     public string Reason { get; set; }
 
+    internal UserContext DefaultUserContext => _userContexts.TryGetValue(UserContext.DEFAULT, out var context) ? context : _userContexts.Values.FirstOrDefault();
+
     internal ICollection<UserContext> UserContexts => _userContexts.Values;
 
     public static async Task<Browser> From(Session session)

lib/PuppeteerSharp/Bidi/Core/UserContext.cs

@@ -30,6 +30,8 @@ namespace PuppeteerSharp.Bidi.Core;
 
 internal class UserContext : IDisposable
 {
+    public const string DEFAULT = "default";
+
     private readonly ConcurrentDictionary<string, BrowsingContext> _browsingContexts = new();
     private string _reason;
 

lib/PuppeteerSharp/Browser.cs

@@ -47,7 +47,7 @@ public abstract class Browser : IBrowser
         public abstract bool IsClosed { get; }
 
         /// <inheritdoc/>
-        public IBrowserContext DefaultContext { get; protected set; }
+        public virtual IBrowserContext DefaultContext { get; protected set; }
 
         /// <inheritdoc/>
         public int DefaultWaitForTimeout { get; set; } = Puppeteer.DefaultTimeout;