Add the stbimage test.

tests/Quik.StbImage.Tests/LoadImage.cs

@@ -3,10 +3,12 @@ using System;
 using System.IO;
 using System.Runtime.InteropServices;
 using Quik.Stb;
+using Image = Quik.Stb.StbImage;
 
 namespace Quik.StbImage.Tests
 {
     [TestClass]
+    [TestCategory("Load Image")]
     public class LoadImage
     {
         [TestMethod("Set Global Options")]
@@ -16,40 +18,32 @@ namespace Quik.StbImage.Tests
             Quik.Stb.StbImage.UnpremultiplyOnLoad = true;
         }
 
-        private StbiStreamWrapper PrepareImage(string path, out stbi_io_callbacks cb)
+        private Stream GetImage(string path)
         {
             Stream? str = GetType().Assembly.GetManifestResourceStream(path);
             Assert.IsNotNull(str, $"Could not find test image resource {path}.");
-
-            StbiStreamWrapper wrapper = new StbiStreamWrapper(str);
-            wrapper.CreateCallbacks(out cb);
-            return wrapper;
+            return str;
         }
 
-        [TestMethod("Load a PNG")]
-        public unsafe void LoadPng()
+        private unsafe void TestImage(string path, int width, int height)
         {
-            // TODO: Fill these up!
-            const int TEST_CHANNELS = 0;
-            const int TEST_WIDTH    = 0;
-            const int TEST_HEIGHT   = 0;
+            Image image = Image.Load(GetImage(path));
 
-            int x, y, numChannels;
-            using StbiStreamWrapper str = PrepareImage("Quik.StbImage.Tests.res.test.png", out stbi_io_callbacks cb);
-            byte *image = Stbi.load_from_callbacks(&cb, null, &x, &y, &numChannels, (int)StbiEnum.STBI_default);
+            Assert.IsNotNull(image);
 
-            if (image == null)
-            {
-                IntPtr reasonPtr = (IntPtr)Stbi.failure_reason();
-                string? reason = Marshal.PtrToStringUTF8((IntPtr)reasonPtr);
-                Assert.Fail("Could not load image: {0}.", reason ?? "None specified. (stbi_failure_reason() is null)");
-            }
+            Assert.AreEqual(width, image.Width, "Width does not match.");
+            Assert.AreEqual(height, image.Height, "Height does not match.");
 
-            Assert.AreEqual(TEST_CHANNELS, numChannels, "Channel count does not match.");
-            Assert.AreEqual(TEST_WIDTH, x, "Width does not match.");
-            Assert.AreEqual(TEST_HEIGHT, y, "Height does not match.");
-
-            Stbi.image_free(image);
+            image.Dispose();
         }
+
+        const int WIDTH = 768;
+        const int HEIGHT = 512;
+
+        [TestMethod("Load a single frame GIF")]
+        public unsafe void LoadGif() => TestImage("Quik.StbImage.Tests.res.kodim.kodim23.gif", WIDTH, HEIGHT);
+        [TestMethod("Load a JPEG")]
+        public unsafe void LoadJpg() => TestImage("Quik.StbImage.Tests.res.kodim.kodim23.jpg", WIDTH, HEIGHT);
+        [TestMethod("Load a PNG")] public unsafe void LoadPng() => TestImage("Quik.StbImage.Tests.res.kodim.kodim23.png", WIDTH, HEIGHT);
     }
 }

tests/Quik.StbImage.Tests/Quik.StbImage.Tests.csproj

@@ -10,6 +10,10 @@
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
   </PropertyGroup>
 
+  <ItemGroup>
+    <EmbeddedResource Include="res/**"/>
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />

tests/Quik.StbImage.Tests/res/kodim/LICENSE.md

@@ -0,0 +1,3 @@
+Kodak Image Suite Test Images owned by Kodak. Image 23 was taken by Steve Kelly.
+The original image file kodim23.png and its derivatives are only included for
+test purposes only and should not be redistributed with the software.