☔ Implement integration tests

src/PlayMobic.Tests/IntegrationTests/DecoderTests.cs

@@ -0,0 +1,81 @@
+namespace PlayMobic.Tests.IntegrationTests;
+
+using PlayMobic.Containers.Mods;
+using PlayMobic.Containers;
+using PlayMobic.Video;
+using PlayMobic.Video.Mobiclip;
+using Yarhl.FileSystem;
+using Yarhl.IO;
+
+[TestFixture]
+public class DecoderTests
+{
+    public static IEnumerable<TestCaseData> GetKeyFrameArgs()
+    {
+        string programDir = AppDomain.CurrentDomain.BaseDirectory;
+        string path = Path.GetFullPath(Path.Combine(programDir, "Resources"));
+
+        var vpypA = new DirectoryInfo(Path.Combine(path, "vpyp_a"));
+        if (vpypA.Exists) {
+            foreach (FileInfo encFrame in vpypA.EnumerateFiles("*.enc")) {
+                string frameName = Path.GetFileNameWithoutExtension(encFrame.Name);
+                string decFrame = Path.Combine(encFrame.DirectoryName!, frameName + ".dec");
+                yield return new TestCaseData(encFrame.FullName, decFrame, 256, 192) {
+                    TestName = $"{nameof(DecodeIdenticalKeyFrames)}(vpyp_a/{frameName})",
+                };
+            }
+        }
+    }
+
+    public static IEnumerable<TestCaseData> GetVideoStreamArgs()
+    {
+        string programDir = AppDomain.CurrentDomain.BaseDirectory;
+        string path = Path.GetFullPath(Path.Combine(programDir, "Resources"));
+
+        string vpypAVideo = Path.Combine(path, "vpyp_a.rawvideo");
+        string vpypAMods = Path.Combine(path, "vpyp_a.mods");
+        if (File.Exists(vpypAVideo) && File.Exists(vpypAMods)) {
+            yield return new TestCaseData(vpypAMods, vpypAVideo) {
+                TestName = $"{nameof(DecodeIdenticalRawVideoStream)}(vpyp_a)",
+            };
+        }
+    }
+
+    [TestCaseSource(nameof(GetKeyFrameArgs))]
+    public void DecodeIdenticalKeyFrames(string encodedPath, string decodedPath, int width, int height)
+    {
+        using var encodedStream = DataStreamFactory.FromFile(encodedPath, FileOpenMode.Read);
+        var decoder = new MobiclipDecoder(width, height);
+
+        FrameYuv420 actualFrame = decoder.DecodeFrame(encodedStream);
+
+        Assert.That(encodedStream.Position, Is.EqualTo(encodedStream.Length), "Input stream position should be at the end");
+
+        using var expectedDecoded = DataStreamFactory.FromFile(decodedPath, FileOpenMode.Read);
+        using var actualDecoded = DataStreamFactory.FromArray(actualFrame.PackedData.ToArray());
+        Assert.That(actualFrame.PackedData.Length, Is.EqualTo(expectedDecoded.Length), "Decoded length should match");
+        Assert.That(expectedDecoded.Compare(actualDecoded), Is.True, "Decoded data should be identical");
+    }
+
+    [TestCaseSource(nameof(GetVideoStreamArgs))]
+    public void DecodeIdenticalRawVideoStream(string containerPath, string expectedVideoPath)
+    {
+        using DataStream expectedVideoStream = DataStreamFactory.FromFile(expectedVideoPath, FileOpenMode.Read);
+        using DataStream actualVideoStream = DataStreamFactory.FromMemory();
+
+        using Node videoNode = NodeFactory.FromFile(containerPath, FileOpenMode.Read)
+            .TransformWith<Binary2Mods>();
+        ModsVideo video = videoNode.GetFormatAs<ModsVideo>()!;
+        ModsInfo info = video.Info;
+
+        var videoDecoder = new MobiclipDecoder(info.Width, info.Height);
+        var demuxer = new ModsDemuxer(video);
+        foreach (MediaPacket framePacket in demuxer.ReadFrames().OfType<VideoPacket>()) {
+            FrameYuv420 frame = videoDecoder.DecodeFrame(framePacket.Data);
+            actualVideoStream.Write(frame.PackedData);
+        }
+
+        Assert.That(actualVideoStream.Length, Is.EqualTo(expectedVideoStream.Length), "Stream length must match");
+        Assert.That(actualVideoStream.Compare(expectedVideoStream), Is.True, "Content must match");
+    }
+}

src/PlayMobic.Tests/PlayMobic.Tests.csproj

@@ -22,4 +22,8 @@
     <ProjectReference Include="..\PlayMobic\PlayMobic.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Content Include="Resources\**\*" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
 </Project>