refactor

tests/ImageSharp.Sandbox46/Tests/TestUtilities/Integration/ReferencePngEncoder.cs

@@ -1,25 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace ImageSharp.Tests.TestUtilities.Integration
-{
-    using System.IO;
-
-    using ImageSharp.Formats;
-    using ImageSharp.PixelFormats;
-
-    public class ReferencePngEncoder : IImageEncoder
-    {
-        public static ReferencePngEncoder Instance { get; } = new ReferencePngEncoder();
-
-        public void Encode<TPixel>(Image<TPixel> image, Stream stream, IEncoderOptions options)
-            where TPixel : struct, IPixel<TPixel>
-        {
-            using (System.Drawing.Bitmap sdBitmap = IntegrationTestUtils.ToSystemDrawingBitmap(image))
-            {
-                sdBitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
-            }
-        }
-    }
-}

tests/ImageSharp.Tests/TestUtilities/ImagingTestCaseUtility.cs

@@ -6,6 +6,7 @@
 namespace ImageSharp.Tests
 {
     using System;
+    using System.Collections.Generic;
     using System.IO;
     using System.Linq;
     using System.Reflection;
@@ -40,12 +41,8 @@ namespace ImageSharp.Tests
         /// </summary>
         public string TestName { get; set; } = string.Empty;
 
-        /// <summary>
-        /// Gets the recommended file name for the output of the test
-        /// </summary>
-        /// <param name="extension"></param>
-        /// <returns>The required extension</returns>
-        public string GetTestOutputFileName(string extension = null, string tag = null)
+        
+        private string GetTestOutputFileNameImpl(string extension, string tag)
         {
             string fn = string.Empty;
 
@@ -89,6 +86,40 @@ namespace ImageSharp.Tests
             return $"{this.GetTestOutputDir()}/{this.TestName}{pixName}{fn}{tag}{extension}";
         }
 
+        /// <summary>
+        /// Gets the recommended file name for the output of the test
+        /// </summary>
+        /// <param name="extension">The required extension</param>
+        /// <param name="settings">The settings modifying the output path</param>
+        /// <returns>The file test name</returns>
+        public string GetTestOutputFileName(string extension = null, object settings = null)
+        {
+            string tag = null;
+            string s = settings as string;
+
+            if (s != null)
+            {
+                tag = s;
+            }
+            else if (settings != null)
+            {
+                Type type = settings.GetType();
+                TypeInfo info = type.GetTypeInfo();
+                if (info.IsPrimitive || info.IsEnum || type == typeof(decimal))
+                {
+                    tag = settings.ToString();
+                }
+                else
+                {
+                    IEnumerable<PropertyInfo> properties = settings.GetType().GetRuntimeProperties();
+
+                    tag = string.Join("_", properties.ToDictionary(x => x.Name, x => x.GetValue(settings)).Select(x => $"{x.Key}-{x.Value}"));
+                }
+            }
+            return this.GetTestOutputFileNameImpl(extension, tag);
+        }
+
+
         /// <summary>
         /// Encodes image by the format matching the required extension, than saves it to the recommended output file.
         /// </summary>
@@ -97,12 +128,17 @@ namespace ImageSharp.Tests
         /// <param name="extension">The requested extension</param>
         /// <param name="encoder">Optional encoder</param>
         /// <param name="options">Optional encoder options</param>
-        public void SaveTestOutputFile<TPixel>(Image<TPixel> image, string extension = null, IImageEncoder encoder = null, IEncoderOptions options = null, string tag = null)
+        public void SaveTestOutputFile<TPixel>(
+            Image<TPixel> image,
+            string extension = null,
+            IImageEncoder encoder = null,
+            IEncoderOptions options = null,
+            object settings = null)
             where TPixel : struct, IPixel<TPixel>
         {
-            string path = this.GetTestOutputFileName(extension: extension, tag:tag);
-            extension = Path.GetExtension(path);
-            IImageFormat format = GetImageFormatByExtension(extension);
+            string path = this.GetTestOutputFileName(extension: extension, settings: settings);
+            string extension1 = Path.GetExtension(path);
+            IImageFormat format = GetImageFormatByExtension(extension1);
 
             encoder = encoder ?? format.Encoder;
 
@@ -112,8 +148,8 @@ namespace ImageSharp.Tests
             }
         }
 
-        internal string GetReferenceOutputFileName(string extension = null, string tag = null) 
-            => this.GetTestOutputFileName(extension, tag).Replace("TestOutput", "ReferenceOutput");
+        internal string GetReferenceOutputFileName(string extension = null, object settings = null) 
+            => this.GetTestOutputFileName(extension, settings).Replace("TestOutput", "ReferenceOutput");
 
         internal void Init(string typeName, string methodName)
         {

tests/ImageSharp.Tests/TestUtilities/TestEnvironment.cs

@@ -0,0 +1,20 @@
+namespace ImageSharp.Tests
+{
+    using System;
+
+    public static class TestEnvironment
+    {
+        private static Lazy<bool> runsOnCi = new Lazy<bool>(
+            () =>
+                {
+                    bool isCi;
+                    return bool.TryParse(Environment.GetEnvironmentVariable("CI"), out isCi) && isCi;
+                });
+
+        // ReSharper disable once InconsistentNaming
+        /// <summary>
+        /// Gets a value indicating whether test execution runs on CI.
+        /// </summary>
+        internal static bool RunsOnCI => runsOnCi.Value;
+    }
+}

tests/ImageSharp.Tests/TestUtilities/TestImageExtensions.cs

@@ -27,36 +27,13 @@ namespace ImageSharp.Tests
         public static Image<TPixel> DebugSave<TPixel>(this Image<TPixel> image, ITestImageProvider provider, object settings = null, string extension = "png")
             where TPixel : struct, IPixel<TPixel>
         {
-            if (bool.TryParse(Environment.GetEnvironmentVariable("CI"), out bool isCi) && isCi)
+            if (TestEnvironment.RunsOnCI)
             {
                 return image;
             }
 
             // We are running locally then we want to save it out
-            string tag = null;
-            string s = settings as string;
-
-            if (s != null)
-            {
-                tag = s;
-            }
-            else if (settings != null)
-            {
-                Type type = settings.GetType();
-                TypeInfo info = type.GetTypeInfo();
-                if (info.IsPrimitive || info.IsEnum || type == typeof(decimal))
-                {
-                    tag = settings.ToString();
-                }
-                else
-                {
-                    IEnumerable<PropertyInfo> properties = settings.GetType().GetRuntimeProperties();
-
-                    tag = string.Join("_", properties.ToDictionary(x => x.Name, x => x.GetValue(settings)).Select(x => $"{x.Key}-{x.Value}"));
-                }
-            }
-
-            provider.Utility.SaveTestOutputFile(image, extension, tag: tag);
+            provider.Utility.SaveTestOutputFile(image, extension, settings: settings);
             return image;
         }
 
@@ -70,35 +47,11 @@ namespace ImageSharp.Tests
             int scalingFactor = ImageComparer.DefaultScalingFactor)
             where TPixel : struct, IPixel<TPixel>
         {
-            // We are running locally then we want to save it out
-            string tag = null;
-            string s = settings as string;
-
-            if (s != null)
-            {
-                tag = s;
-            }
-            else if (settings != null)
-            {
-                Type type = settings.GetType();
-                TypeInfo info = type.GetTypeInfo();
-                if (info.IsPrimitive || info.IsEnum || type == typeof(decimal))
-                {
-                    tag = settings.ToString();
-                }
-                else
-                {
-                    IEnumerable<PropertyInfo> properties = settings.GetType().GetRuntimeProperties();
-
-                    tag = string.Join("_", properties.ToDictionary(x => x.Name, x => x.GetValue(settings)).Select(x => $"{x.Key}-{x.Value}"));
-                }
-            }
-
-            string referenceOutputFile = provider.Utility.GetReferenceOutputFileName(extension, tag);
+            string referenceOutputFile = provider.Utility.GetReferenceOutputFileName(extension, settings);
 
-            if (!(bool.TryParse(Environment.GetEnvironmentVariable("CI"), out bool isCi) && isCi))
+            if (!TestEnvironment.RunsOnCI)
             {
-                provider.Utility.SaveTestOutputFile(image, extension, tag: tag);
+                provider.Utility.SaveTestOutputFile(image, extension, settings: settings);
             }
 
             if (!File.Exists(referenceOutputFile))