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

tests/Paca.Tests/Platform/CliPipelineGateTests.cs

@@ -0,0 +1,101 @@
+using System.Diagnostics;
+using System.IO;
+using Xunit;
+
+namespace Paca.Tests.Platform;
+
+/// <summary>
+/// Paca.Cli 파이프라인 회귀 방지 게이트 테스트 (Phase 5).
+/// CLI 옵션 파싱(--help, --dashparse, --dash, HLS), 프로세스 종료 코드 검증.
+/// </summary>
+public class CliPipelineGateTests
+{
+    private static string GetSolutionRoot()
+    {
+        var dir = AppContext.BaseDirectory;
+        while (!string.IsNullOrEmpty(dir) && !File.Exists(Path.Combine(dir, "Paca.slnx")) && !File.Exists(Path.Combine(dir, "Paca.sln")))
+        {
+            var parent = Directory.GetParent(dir);
+            if (parent == null) break;
+            dir = parent.FullName;
+        }
+        return dir ?? AppContext.BaseDirectory;
+    }
+
+    private static string CliProjectDir => Path.Combine(GetSolutionRoot(), "src", "Paca.Cli");
+
+    [Fact]
+    public void Gate_Cli_Program_Source_Contains_All_Required_Pipelines()
+    {
+        var programPath = Path.Combine(CliProjectDir, "Program.cs");
+        Assert.True(File.Exists(programPath), $"Program.cs must exist at {programPath}");
+
+        var content = File.ReadAllText(programPath);
+
+        // 핵심 CLI 옵션 검증
+        Assert.Contains("--help", content);
+        Assert.Contains("-h", content);
+        Assert.Contains("--dashparse", content);
+        Assert.Contains("--dash", content);
+        Assert.Contains("HlsDownloader", content);
+        Assert.Contains("DashDownloader", content);
+    }
+
+    [Fact]
+    public async Task Gate_Cli_Help_Command_Exits_With_Code_Zero()
+    {
+        var root = GetSolutionRoot();
+        var psi = new ProcessStartInfo
+        {
+            FileName = "dotnet",
+            Arguments = "run --project src/Paca.Cli --no-build -- -h",
+            WorkingDirectory = root,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+            CreateNoWindow = true
+        };
+
+        using var process = new Process { StartInfo = psi };
+        process.Start();
+
+        var outputTask = process.StandardOutput.ReadToEndAsync();
+        var errorTask = process.StandardError.ReadToEndAsync();
+
+        using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+        await process.WaitForExitAsync(cts.Token);
+
+        var stdout = await outputTask;
+        var stderr = await errorTask;
+
+        Assert.Equal(0, process.ExitCode);
+        Assert.Contains("Usage: dotnet run", stdout);
+    }
+
+    [Fact]
+    public async Task Gate_Cli_NoArgs_Prints_Usage_And_Exits_Zero()
+    {
+        var root = GetSolutionRoot();
+        var psi = new ProcessStartInfo
+        {
+            FileName = "dotnet",
+            Arguments = "run --project src/Paca.Cli --no-build",
+            WorkingDirectory = root,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            UseShellExecute = false,
+            CreateNoWindow = true
+        };
+
+        using var process = new Process { StartInfo = psi };
+        process.Start();
+
+        var outputTask = process.StandardOutput.ReadToEndAsync();
+        using var cts = new CancellationTokenSource(TimeSpan.FromSeconds(30));
+        await process.WaitForExitAsync(cts.Token);
+        var stdout = await outputTask;
+
+        Assert.Equal(0, process.ExitCode);
+        Assert.Contains("Usage: dotnet run", stdout);
+    }
+}