add more test cases to Resize_WorksWithAllResamplers

tests/ImageSharp.Tests/Processing/Processors/Transforms/ResizeTests.cs

@@ -24,19 +24,45 @@ namespace SixLabors.ImageSharp.Tests.Processing.Processors.Transforms
         public static readonly string[] AllResamplerNames = TestUtils.GetAllResamplerNames();
 
         [Theory]
-        [WithTestPatternImages(nameof(AllResamplerNames), 100, 100, DefaultPixelType, 0.5f)]
-        [WithFileCollection(nameof(CommonTestImages), nameof(AllResamplerNames), DefaultPixelType, 0.5f)]
-        [WithFileCollection(nameof(CommonTestImages), nameof(AllResamplerNames), DefaultPixelType, 0.3f)]
-        public void Resize_WorksWithAllResamplers<TPixel>(TestImageProvider<TPixel> provider, string samplerName, float ratio)
+        [WithTestPatternImages(nameof(AllResamplerNames), 100, 100, DefaultPixelType, 0.5f, null, null)]
+        [WithTestPatternImages(nameof(AllResamplerNames), 50, 50, DefaultPixelType, 8f, null, null)]
+        [WithTestPatternImages(nameof(AllResamplerNames), 201, 199, DefaultPixelType, null, 100, 99)]
+        [WithTestPatternImages(nameof(AllResamplerNames), 301, 300, DefaultPixelType, null, 1180, 480)]
+        [WithTestPatternImages(nameof(AllResamplerNames), 49, 80, DefaultPixelType, null, 301, 100)]
+        [WithFileCollection(nameof(CommonTestImages), nameof(AllResamplerNames), DefaultPixelType, 0.5f, null, null)]
+        [WithFileCollection(nameof(CommonTestImages), nameof(AllResamplerNames), DefaultPixelType, 0.3f, null, null)]
+        public void Resize_WorksWithAllResamplers<TPixel>(
+            TestImageProvider<TPixel> provider,
+            string samplerName,
+            float? ratio,
+            int? specificDestWidth,
+            int? specificDestHeight)
             where TPixel : struct, IPixel<TPixel>
         {
             IResampler sampler = TestUtils.GetResampler(samplerName);
 
             using (Image<TPixel> image = provider.GetImage())
             {
-                SizeF newSize = image.Size() * ratio;
+                SizeF newSize;
+                string destSizeInfo;
+                if (ratio.HasValue)
+                {
+                    newSize = image.Size() * ratio.Value;
+                    destSizeInfo = ratio.Value.ToString(System.Globalization.CultureInfo.InvariantCulture);
+                }
+                else
+                {
+                    if (!specificDestWidth.HasValue || !specificDestHeight.HasValue)
+                    {
+                        throw new InvalidOperationException("invalid dimensional input for Resize_WorksWithAllResamplers!");
+                    }
+
+                    newSize = new SizeF(specificDestWidth.Value, specificDestHeight.Value);
+                    destSizeInfo = $"{newSize.Width}x{newSize.Height}";
+                }
+                
                 image.Mutate(x => x.Resize((Size)newSize, sampler, false));
-                FormattableString details = $"{samplerName}-{ratio.ToString(System.Globalization.CultureInfo.InvariantCulture)}";
+                FormattableString details = $"{samplerName}-{destSizeInfo}";
 
                 image.DebugSave(provider, details);
                 image.CompareToReferenceOutput(ImageComparer.TolerantPercentage(0.02f), provider, details);