feat(ads/seo/release): v1.2.0 with live Google Ads, isolated ad profile, ads.txt, and SEO/AEO/GEO optimization

tests/Paca.Tests/Browser/ChromeMediaSessionPiPTests.cs

@@ -0,0 +1,89 @@
+using System;
+using System.Linq;
+using Paca.Browser.Media;
+using Paca.Browser.Tabs;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeMediaSessionPiPTests
+{
+    [Fact]
+    public void MediaSessionCoordinator_Tracks_Active_Sessions()
+    {
+        var coordinator = new MediaSessionCoordinator();
+        var tabId1 = Guid.NewGuid();
+        var tabId2 = Guid.NewGuid();
+
+        coordinator.RegisterOrUpdateSession(new MediaSessionItem(
+            tabId1,
+            "Cool Music Video",
+            "YouTube",
+            "https://www.youtube.com/watch?v=123",
+            IsPlaying: true,
+            SupportsPiP: true,
+            Duration: 210.0,
+            CurrentPosition: 45.0
+        ));
+
+        coordinator.RegisterOrUpdateSession(new MediaSessionItem(
+            tabId2,
+            "Podcast Episode 99",
+            "Spotify",
+            "https://open.spotify.com/track/456",
+            IsPlaying: false,
+            SupportsPiP: false,
+            Duration: 3600.0,
+            CurrentPosition: 1200.0
+        ));
+
+        Assert.Equal(2, coordinator.ActiveSessions.Count);
+
+        var primary = coordinator.GetPrimaryPlayingSession();
+        Assert.NotNull(primary);
+        Assert.Equal(tabId1, primary.TabId);
+        Assert.Equal("Cool Music Video", primary.Title);
+
+        // Update tab1 to paused and tab2 to playing
+        coordinator.RegisterOrUpdateSession(primary with { IsPlaying = false });
+        var tab2Item = coordinator.ActiveSessions.First(s => s.TabId == tabId2);
+        coordinator.RegisterOrUpdateSession(tab2Item with { IsPlaying = true });
+
+        var newPrimary = coordinator.GetPrimaryPlayingSession();
+        Assert.NotNull(newPrimary);
+        Assert.Equal(tabId2, newPrimary.TabId);
+
+        // Remove session when tab closes
+        coordinator.RemoveSession(tabId1);
+        Assert.Single(coordinator.ActiveSessions);
+        Assert.Equal(tabId2, coordinator.ActiveSessions[0].TabId);
+    }
+
+    [Fact]
+    public void MediaSessionCoordinator_Generates_Valid_PiP_Scripts()
+    {
+        var coordinator = new MediaSessionCoordinator();
+        var pipScript = coordinator.GeneratePiPInjectionScript();
+        Assert.Contains("requestPictureInPicture", pipScript);
+        Assert.Contains("document.pictureInPictureElement", pipScript);
+
+        var toggleScript = coordinator.GeneratePlayPauseToggleScript();
+        Assert.Contains(".paused", toggleScript);
+        Assert.Contains(".play()", toggleScript);
+        Assert.Contains(".pause()", toggleScript);
+    }
+
+    [Fact]
+    public void OmniboxActionEvaluator_Matches_Media_And_PiP()
+    {
+        var pipActions = OmniboxActionEvaluator.GetMatchingActions("pip");
+        Assert.Contains(pipActions, a => a.ActionId == "action:media-controls");
+
+        var mediaActions = OmniboxActionEvaluator.GetMatchingActions("미디어 컨트롤");
+        Assert.Contains(mediaActions, a => a.ActionId == "action:media-controls");
+
+        var action = OmniboxActionEvaluator.AllActions.FirstOrDefault(a => a.ActionId == "action:media-controls");
+        Assert.NotNull(action);
+        Assert.Contains("PIP", action.DisplayTitle);
+    }
+}