Phase 0 (T1-3/4/7/9/11): find bar w/ native Find API + search engine + site zoom + force reload + F11, wired into MainWindow, E2E smoke (39 tests)

VideoDownloader.Tests/Browser/FindSessionTests.cs

@@ -0,0 +1,98 @@
+using VideoDownloader.App.Browser;
+
+namespace VideoDownloader.Tests.Browser;
+
+// T1-3 페이지 내 검색: FindSession 은 네이티브 Find API(IFindApi) 위의 상태 머신.
+public class FindSessionTests
+{
+    private sealed class FakeFindApi : IFindApi
+    {
+        public string? LastTerm;
+        public int StartCount, NextCount, PrevCount, StopCount;
+        public int MatchCount { get; set; }
+        public int ActiveIndex { get; set; }
+
+        public event EventHandler<int>? MatchCountChanged;
+        public event EventHandler<int>? ActiveMatchIndexChanged;
+
+        public Task StartAsync(string term, bool caseSensitive, bool matchWord, bool highlightAll)
+        {
+            StartCount++; LastTerm = term; return Task.CompletedTask;
+        }
+        public void FindNext() => NextCount++;
+        public void FindPrevious() => PrevCount++;
+        public void Stop() => StopCount++;
+
+        public void RaiseCount(int n) { MatchCount = n; MatchCountChanged?.Invoke(this, n); }
+        public void RaiseActive(int n) { ActiveIndex = n; ActiveMatchIndexChanged?.Invoke(this, n); }
+    }
+
+    [Fact]
+    public void Start는_API로_용어를_전달하고_카운트_이벤트를_구독_반영한다()
+    {
+        var api = new FakeFindApi();
+        var session = new FindSession(api);
+
+        session.StartAsync("hello").Wait();
+        api.RaiseCount(7);
+
+        Assert.Equal(1, api.StartCount);
+        Assert.Equal("hello", api.LastTerm);
+        Assert.Equal(7, session.MatchCount);
+    }
+
+    [Fact]
+    public void Next_Previous는_API에_위임한다()
+    {
+        var api = new FakeFindApi();
+        var session = new FindSession(api);
+        session.StartAsync("x").Wait();
+
+        session.Next();
+        session.Previous();
+
+        Assert.Equal(1, api.NextCount);
+        Assert.Equal(1, api.PrevCount);
+    }
+
+    [Fact]
+    public void ActiveMatchIndex_이벤트가_상태에_반영된다()
+    {
+        var api = new FakeFindApi();
+        var session = new FindSession(api);
+        session.StartAsync("x").Wait();
+
+        api.RaiseActive(3);
+        Assert.Equal(3, session.ActiveMatchIndex);
+    }
+
+    [Fact]
+    public void 빈_용어로_Start하면_Stop만_호출된다()
+    {
+        var api = new FakeFindApi();
+        var session = new FindSession(api);
+
+        session.StartAsync("   ").Wait();
+
+        Assert.Equal(0, api.StartCount);
+        Assert.Equal(1, api.StopCount);
+        Assert.Equal(0, session.MatchCount);
+    }
+
+    [Fact]
+    public void Close는_Stop을_호출하고_상태를_초기화한다()
+    {
+        var api = new FakeFindApi();
+        var session = new FindSession(api);
+        session.StartAsync("x").Wait();
+        api.RaiseCount(5);
+        api.RaiseActive(2);
+
+        session.Close();
+
+        Assert.Equal(1, api.StopCount);
+        Assert.Equal(0, session.MatchCount);
+        Assert.Equal(-1, session.ActiveMatchIndex); // -1 = 활성 매치 없음(Start 초기값과 동일 센티넬)
+        Assert.Equal(string.Empty, session.Term);
+    }
+}

VideoDownloader.Tests/E2E/MainWindowSmokeE2ETests.cs

@@ -0,0 +1,58 @@
+using System.Windows;
+using VideoDownloader.App;
+using VideoDownloader.Tests.Infrastructure;
+
+namespace VideoDownloader.Tests.E2E;
+
+/// <summary>
+/// E2E 스모크: 실제 MainWindow 를 기동해 WebView2 초기화·탐색·검색 바·전체화면 전환이
+/// 크래시 없이 동작하는지 검증한다(Phase 0 통합 확인). 네트워크 의존 제거를 위해 about:blank 사용.
+/// </summary>
+[Collection("E2E")]
+public class MainWindowSmokeE2ETests
+{
+    [Fact]
+    public async Task MainWindow_기동_탐색_검색바_전체화면_스모크()
+    {
+        using var sta = StaDispatcher.Start();
+        WpfTestApp.Ensure(sta.Dispatcher);
+        var ok = await sta.InvokeAsync(async () =>
+        {
+            var window = new MainWindow();
+            window.Show();
+
+            // WebView2 초기화 대기 (Loaded → InitializeBrowserAsync)
+            var cv = await Wait.Until(
+                () => Task.FromResult(window.Browser.CoreWebView2),
+                c => c != null, 30000);
+
+            // about:blank 탐색 (네트워크 불필요)
+            window.NavigateTo("about:blank");
+            await Wait.Until(
+                () => Task.FromResult(cv.Source ?? ""),
+                s => s.Contains("about:blank"), 15000);
+
+            // T1-3 검색 바 열기/닫기
+            window.OpenFind();
+            var findVisible = window.FindBar.Visibility == Visibility.Visible;
+            window.CloseFind();
+            var findCollapsed = window.FindBar.Visibility == Visibility.Collapsed;
+
+            // T1-11 전체화면 토글
+            window.ToggleFullscreen();
+            var toolbarHidden = window.ToolbarRow.Visibility == Visibility.Collapsed;
+            window.ToggleFullscreen();
+            var toolbarBack = window.ToolbarRow.Visibility == Visibility.Visible;
+
+            window.Close();
+            return (init: cv != null, nav: true, findVisible, findCollapsed, toolbarHidden, toolbarBack);
+        });
+
+        Assert.True(ok.init, "WebView2 초기화 실패");
+        Assert.True(ok.nav);
+        Assert.True(ok.findVisible, "검색 바 미표시");
+        Assert.True(ok.findCollapsed, "검색 바 미닫힘");
+        Assert.True(ok.toolbarHidden, "전체화면에서 툴바 미숨김");
+        Assert.True(ok.toolbarBack, "전체화면 복원 실패");
+    }
+}

VideoDownloader.Tests/E2E/WebView2FindE2ETests.cs

@@ -0,0 +1,71 @@
+using System.Windows;
+using System.Windows.Threading;
+using Microsoft.Web.WebView2.Core;
+using VideoDownloader.Tests.Infrastructure;
+
+namespace VideoDownloader.Tests.E2E;
+
+/// <summary>
+/// E2E: 실제 WebView2 + 네이티브 Find API(CoreWebView2.Find) 검증(T1-3).
+/// WebView2 런타임 위에서 매치 카운트/활성 인덱스가 실제로 발생하는지 확인한다.
+/// </summary>
+[Collection("E2E")]
+public class WebView2FindE2ETests
+{
+    [Fact]
+    public async Task 네이티브_Find로_매치_수와_활성_인덱스를_얻는다()
+    {
+        using var sta = StaDispatcher.Start();
+        var udf = Path.Combine(Path.GetTempPath(), $"vd_e2e_{Guid.NewGuid():N}");
+        var result = await sta.InvokeAsync(async () =>
+        {
+            var window = new Window();
+            var browser = new Microsoft.Web.WebView2.Wpf.WebView2();
+            window.Content = browser;
+            window.Show();
+
+            var env = await CoreWebView2Environment.CreateAsync(userDataFolder: udf);
+            await browser.EnsureCoreWebView2Async(env);
+            var cv = browser.CoreWebView2;
+            cv.Settings.AreDefaultScriptDialogsEnabled = false;
+
+            var html = "<html><body><p>hello world hello brave hello</p></body></html>";
+            cv.NavigateToString(html);
+            await WaitUntilNavCompleted(cv);
+
+            // 네이티브 Find API — SuppressDefaultFindDialog 로 자체 UI 전제 검증
+            int matchCount = -1, activeIndex = -1;
+            cv.Find.MatchCountChanged += (_, _) => matchCount = cv.Find.MatchCount;
+            cv.Find.ActiveMatchIndexChanged += (_, _) => activeIndex = cv.Find.ActiveMatchIndex;
+
+            var options = env.CreateFindOptions();
+            options.FindTerm = "hello";
+            options.ShouldHighlightAllMatches = true;
+            options.SuppressDefaultFindDialog = true;
+            await cv.Find.StartAsync(options);
+
+            await Wait.Until(() => Task.FromResult(matchCount), c => c > 0, 10000);
+            var countAfterStart = matchCount;
+
+            cv.Find.FindNext();
+            await Wait.Until(() => Task.FromResult(activeIndex), i => i >= 1, 10000);
+
+            cv.Find.Stop();
+            window.Close();
+            return (countAfterStart, activeIndex);
+        });
+
+        try { Directory.Delete(udf, true); } catch { }
+        Assert.Equal(3, result.countAfterStart);
+        Assert.True(result.activeIndex >= 1, $"활성 인덱스가 진행되지 않음: {result.activeIndex}");
+    }
+
+    private static Task WaitUntilNavCompleted(CoreWebView2 cv)
+    {
+        var tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
+        EventHandler<CoreWebView2NavigationCompletedEventArgs>? h = null;
+        h = (_, _) => { cv.NavigationCompleted -= h; tcs.TrySetResult(); };
+        cv.NavigationCompleted += h;
+        return tcs.Task.WaitAsync(TimeSpan.FromSeconds(15));
+    }
+}

VideoDownloader.Tests/Infrastructure/WpfTestApp.cs

@@ -0,0 +1,33 @@
+using System.Windows;
+using VideoDownloader.App;
+
+namespace VideoDownloader.Tests.Infrastructure;
+
+/// <summary>
+/// 테스트 프로세스에는 App.xaml 의 리소스가 없으므로, App 어셈블리의 테마 사전을
+/// 테스트 전용 Application 에 로드한다(앱의 App.ApplyTheme 과 동일 순서: 색 → 스타일).
+/// </summary>
+public static class WpfTestApp
+{
+    private static bool _initialized;
+
+    public static void Ensure(System.Windows.Threading.Dispatcher dispatcher)
+    {
+        dispatcher.Invoke(() =>
+        {
+            if (_initialized) return;
+            if (Application.Current == null)
+                new Application { ShutdownMode = ShutdownMode.OnExplicitShutdown };
+            var md = Application.Current.Resources.MergedDictionaries;
+            if (md.Count == 0)
+            {
+                const string asm = "/VideoDownloader;component";
+                md.Add(new ResourceDictionary { Source = new Uri(asm + "/Themes/Dark.xaml", UriKind.Relative) });
+                md.Add(new ResourceDictionary { Source = new Uri(asm + "/Themes/Shared.xaml", UriKind.Relative) });
+            }
+            if (!Application.Current.Resources.Contains("InverseCountToVisibility"))
+                Application.Current.Resources["InverseCountToVisibility"] = new InverseCountToVisibilityConverter();
+            _initialized = true;
+        });
+    }
+}