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

tests/Paca.Tests/Core/AudioVocalStemExtractorGateTests.cs

@@ -0,0 +1,76 @@
+using System;
+using Paca.Core;
+using Xunit;
+
+namespace Paca.Tests.Core;
+
+public class AudioVocalStemExtractorGateTests
+{
+    [Fact]
+    public void Gate317_AudioVocalStemExtractor_BuildsKaraokeVocalRemovalFilter()
+    {
+        var filter = AudioVocalStemExtractor.BuildFfmpegStemFilter(AudioStemMode.VocalRemovalKaraoke);
+
+        Assert.Contains("pan=stereo|c0=0.5*c0-0.5*c1|c1=0.5*c1-0.5*c0", filter);
+    }
+
+    [Fact]
+    public void Gate318_AudioVocalStemExtractor_BuildsSpeechVoiceEnhanceFilter()
+    {
+        var filter = AudioVocalStemExtractor.BuildFfmpegStemFilter(AudioStemMode.VoiceEnhanceSpeechOnly);
+
+        Assert.Contains("highpass=f=200", filter);
+        Assert.Contains("lowpass=f=3400", filter);
+        Assert.Contains("afftdn=nf=-25", filter);
+    }
+
+    [Fact]
+    public void Gate319_AudioVocalStemExtractor_BuildsBassBoostFilter()
+    {
+        var filter = AudioVocalStemExtractor.BuildFfmpegStemFilter(AudioStemMode.BassBoost);
+
+        Assert.Contains("bass=g=8:f=110:w=0.6", filter);
+    }
+
+    [Fact]
+    public void Gate320_AudioVocalStemExtractor_BuildsFullCommandLine_Correctly()
+    {
+        var cmd = AudioVocalStemExtractor.BuildStemCommandLine(
+            inputPath: "C:\\music\\song.mp3",
+            outputPath: "C:\\music\\song_karaoke.mp3",
+            mode: AudioStemMode.VocalRemovalKaraoke,
+            audioCodec: "libmp3lame"
+        );
+
+        Assert.Contains("-i \"C:\\music\\song.mp3\"", cmd);
+        Assert.Contains("-filter:a \"pan=stereo|c0=0.5*c0-0.5*c1|c1=0.5*c1-0.5*c0\"", cmd);
+        Assert.Contains("-c:a libmp3lame -b:a 320k", cmd);
+        Assert.EndsWith("\"C:\\music\\song_karaoke.mp3\" -y", cmd);
+    }
+
+    [Fact]
+    public void Gate321_AudioVocalStemExtractor_BuildsIsolatedVocalsAcapellaFilter()
+    {
+        var filter = AudioVocalStemExtractor.BuildFfmpegStemFilter(AudioStemMode.IsolatedVocalsAcapella);
+
+        Assert.Contains("0.5*c0+0.5*c1", filter);
+        Assert.Contains("bandpass=f=1200", filter);
+    }
+
+    [Fact]
+    public void Gate322_AudioVocalStemExtractor_BuildsNightModeDialogueNormalizationFilter()
+    {
+        var filter = AudioVocalStemExtractor.BuildFfmpegStemFilter(AudioStemMode.NightModeDialogueNormalization);
+
+        Assert.Contains("dynaudnorm=f=150", filter);
+    }
+
+    [Fact]
+    public void Gate323_AudioVocalStemExtractor_BuildsPodcastBroadcastSpeechFilter()
+    {
+        var filter = AudioVocalStemExtractor.BuildFfmpegStemFilter(AudioStemMode.PodcastBroadcastSpeech);
+
+        Assert.Contains("highpass=f=80", filter);
+        Assert.Contains("afftdn=nf=-20", filter);
+    }
+}