Adding unit tests, refactoring file access to a service, adding CatalogImageMissingException.

2017-04-28 19:56:32 -04:00
parent ac89e73bf4
commit 5dbbc4c791
10 changed files with 157 additions and 14 deletions
--- a/tests/UnitTests/Web/Controllers/CatalogControllerGetImage.cs
+++ b/tests/UnitTests/Web/Controllers/CatalogControllerGetImage.cs
@@ -0,0 +1,60 @@
+using ApplicationCore.Exceptions;
+using ApplicationCore.Interfaces;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.eShopWeb.Controllers;
+using Moq;
+using Xunit;
+
+namespace UnitTests
+{
+    public class CatalogControllerGetImage
+    {
+        private Mock<IImageService> _mockImageService = new Mock<IImageService>();
+        private CatalogController _controller;
+        private int _testImageId = 123;
+        private byte[] _testBytes = { 0x01, 0x02, 0x03 };
+
+        public CatalogControllerGetImage()
+        {
+            _controller = new CatalogController(null, null, _mockImageService.Object);
+        }
+
+        [Fact]
+        public void CallsImageServiceWithId()
+        {
+            _mockImageService
+                .Setup(i => i.GetImageBytesById(_testImageId))
+                .Returns(_testBytes)
+                .Verifiable();
+
+            _controller.GetImage(_testImageId);
+            _mockImageService.Verify();
+        }
+
+        [Fact]
+        public void ReturnsFileResultWithBytesGivenSuccess()
+        {
+            _mockImageService
+                .Setup(i => i.GetImageBytesById(_testImageId))
+                .Returns(_testBytes);
+
+            var result = _controller.GetImage(_testImageId);
+
+            var fileResult = Assert.IsType<FileContentResult>(result);
+            var bytes = Assert.IsType<byte[]>(fileResult.FileContents);
+        }
+
+        [Fact]
+        public void ReturnsNotFoundResultGivenImageMissingException()
+        {
+            _mockImageService
+                .Setup(i => i.GetImageBytesById(_testImageId))
+                .Throws(new CatalogImageMissingException("missing image"));
+
+            var result = _controller.GetImage(_testImageId);
+
+            var actionResult = Assert.IsType<NotFoundResult>(result);
+        }
+    }
+}