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/ChromeOpenSearchAndCustomEngineTests.cs

@@ -0,0 +1,70 @@
+using System;
+using System.Linq;
+using Paca.Browser;
+using Paca.Browser.Search;
+using Paca.Browser.Tabs;
+using Xunit;
+
+namespace Paca.Tests.Browser;
+
+public class ChromeOpenSearchAndCustomEngineTests
+{
+    [Fact]
+    public void OpenSearchParser_Parses_Standard_Xml_Description()
+    {
+        var xml = @"<?xml version=""1.0"" encoding=""UTF-8""?>
+<OpenSearchDescription xmlns=""http://a9.com/-/spec/opensearch/1.1/"">
+  <ShortName>GitHub</ShortName>
+  <Description>GitHub Code Search</Description>
+  <Url type=""text/html"" template=""https://github.com/search?q={searchTerms}""/>
+</OpenSearchDescription>";
+
+        var engine = OpenSearchParser.Parse(xml, fallbackKeyword: "gh");
+        Assert.NotNull(engine);
+        Assert.Equal("GitHub", engine.ShortName);
+        Assert.Equal("GitHub Code Search", engine.Description);
+        Assert.Equal("gh", engine.Keyword);
+        Assert.Equal("https://github.com/search?q=%s", engine.TemplateUrl);
+    }
+
+    [Theory]
+    [InlineData("https://example.com?q=%s", "hello world", "https://example.com?q=hello+world")]
+    [InlineData("https://example.com?q={0}", "hello world", "https://example.com?q=hello+world")]
+    [InlineData("https://example.com?q={searchTerms}", "hello world", "https://example.com?q=hello+world")]
+    [InlineData("https://example.com?q=%s", "C# & .NET", "https://example.com?q=C%23+%26+.NET")]
+    public void SearchEngineTemplateFormatter_Formats_Correctly(string template, string query, string expected)
+    {
+        var result = SearchEngineTemplateFormatter.FormatUrl(template, query);
+        Assert.Equal(expected, result);
+    }
+
+    [Fact]
+    public void SearchEngineResolver_Supports_PercentS_Templates()
+    {
+        var custom = new[]
+        {
+            new SearchEngine("DevSearch", "ds", "https://devsearch.org/?q=%s")
+        };
+        var resolver = new SearchEngineResolver("Google", customEngines: custom);
+
+        var intent = resolver.Resolve("ds async task");
+        Assert.NotNull(intent);
+        Assert.False(intent.IsUrl);
+        Assert.Equal("https://devsearch.org/?q=async+task", intent.Target);
+        Assert.Equal("DevSearch", intent.EngineName);
+    }
+
+    [Fact]
+    public void OmniboxActionEvaluator_Matches_Search_Engines()
+    {
+        var actionsKr = OmniboxActionEvaluator.GetMatchingActions("검색엔진");
+        Assert.Contains(actionsKr, a => a.ActionId == "action:search-engines");
+
+        var actionsEn = OmniboxActionEvaluator.GetMatchingActions("search engines");
+        Assert.Contains(actionsEn, a => a.ActionId == "action:search-engines");
+
+        var action = OmniboxActionEvaluator.AllActions.FirstOrDefault(a => a.ActionId == "action:search-engines");
+        Assert.NotNull(action);
+        Assert.Contains("검색엔진", action.DisplayTitle);
+    }
+}