Test 304 requests

Author: JimBobSquarePants

tests/ImageSharp.Web.Tests/Processing/AzureBlobStorageCacheServerTests.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.IO;
+using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
 using SixLabors.ImageSharp.Formats;
@@ -34,6 +35,8 @@ public async Task CanProcessAndResolveImage(string url)
 
             Assert.NotNull(response);
             Assert.True(response.IsSuccessStatusCode);
+            Assert.True(response.Content.Headers.ContentLength > 0);
+            Assert.Equal(format.DefaultMimeType, response.Content.Headers.ContentType.MediaType);
 
             (Image Image, IImageFormat Format) actual = await Image.LoadWithFormatAsync(await response.Content.ReadAsStreamAsync());
             using Image image = actual.Image;
@@ -46,12 +49,29 @@ public async Task CanProcessAndResolveImage(string url)
 
             Assert.NotNull(response);
             Assert.True(response.IsSuccessStatusCode);
+            Assert.True(response.Content.Headers.ContentLength > 0);
+            Assert.Equal(format.DefaultMimeType, response.Content.Headers.ContentType.MediaType);
 
             (Image Image, IImageFormat Format) cachedActual = await Image.LoadWithFormatAsync(await response.Content.ReadAsStreamAsync());
             using Image cached = cachedActual.Image;
 
             Assert.Equal(Width, cached.Width);
             Assert.Equal(format, actual.Format);
+
+            // 304 response
+            var request = new HttpRequestMessage
+            {
+                RequestUri = new Uri(url + Command),
+                Method = HttpMethod.Get,
+            };
+
+            request.Headers.IfModifiedSince = DateTimeOffset.UtcNow;
+
+            response = await this.HttpClient.SendAsync(request);
+
+            Assert.Equal(HttpStatusCode.NotModified, response.StatusCode);
+            Assert.Equal(0, response.Content.Headers.ContentLength);
+            Assert.Equal(format.DefaultMimeType, response.Content.Headers.ContentType.MediaType);
         }
     }
 }

tests/ImageSharp.Web.Tests/Processing/PhysicalFileSystemCacheServerTests.cs

@@ -3,8 +3,10 @@
 
 using System;
 using System.IO;
+using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
 using SixLabors.ImageSharp.Formats;
 using SixLabors.ImageSharp.Web.Tests.TestUtilities;
 using Xunit;
@@ -34,6 +36,8 @@ public async Task CanProcessAndResolveImage(string url)
 
             Assert.NotNull(response);
             Assert.True(response.IsSuccessStatusCode);
+            Assert.True(response.Content.Headers.ContentLength > 0);
+            Assert.Equal(format.DefaultMimeType, response.Content.Headers.ContentType.MediaType);
 
             (Image Image, IImageFormat Format) actual = await Image.LoadWithFormatAsync(await response.Content.ReadAsStreamAsync());
             using Image image = actual.Image;
@@ -46,12 +50,29 @@ public async Task CanProcessAndResolveImage(string url)
 
             Assert.NotNull(response);
             Assert.True(response.IsSuccessStatusCode);
+            Assert.True(response.Content.Headers.ContentLength > 0);
+            Assert.Equal(format.DefaultMimeType, response.Content.Headers.ContentType.MediaType);
 
             (Image Image, IImageFormat Format) cachedActual = await Image.LoadWithFormatAsync(await response.Content.ReadAsStreamAsync());
             using Image cached = cachedActual.Image;
 
             Assert.Equal(Width, cached.Width);
             Assert.Equal(format, actual.Format);
+
+            // 304 response
+            var request = new HttpRequestMessage
+            {
+                RequestUri = new Uri(url + Command),
+                Method = HttpMethod.Get,
+            };
+
+            request.Headers.IfModifiedSince = DateTimeOffset.UtcNow;
+
+            response = await this.HttpClient.SendAsync(request);
+
+            Assert.Equal(HttpStatusCode.NotModified, response.StatusCode);
+            Assert.Equal(0, response.Content.Headers.ContentLength);
+            Assert.Equal(format.DefaultMimeType, response.Content.Headers.ContentType.MediaType);
         }
     }
 }