Added support for checking a file content result's binary contents.

Partial implementation of #3

Author: AlexArchive

TestStack.FluentMVCTesting.Tests/ControllerResultTestTests.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Linq.Expressions;
 using System.Net;
 using System.Web.Mvc;
@@ -28,6 +29,7 @@ class ControllerResultTestShould
             ReturnType<FileContentResult>(t => t.ShouldRenderFile("")),
             ReturnType<FileStreamResult>(t => t.ShouldRenderFileStream()),
             ReturnType<FileContentResult>(t => t.ShouldRenderFileContents()),
+            ReturnType<FileContentResult>(t => t.ShouldRenderFileContents(new byte[0])),
             ReturnType<FileStreamResult>(t => t.ShouldRenderFileStream("")),
             ReturnType<FilePathResult>(t => t.ShouldRenderFilePath()),
             ReturnType<FilePathResult>(t => t.ShouldRenderFilePath("")),
@@ -343,6 +345,25 @@ public void Check_for_file_content_result()
             _controller.WithCallTo(c => c.EmptyFile()).ShouldRenderFileContents();
         }
 
+        [Test]
+        public void Check_for_file_content_result_and_check_binary_content()
+        {
+            _controller.WithCallTo(c => c.File()).ShouldRenderFileContents(ControllerResultTestController.FileContents);
+        }
+
+        [Test]
+        public void Check_for_file_content_result_and_check_invalid_binary_content()
+        {
+            byte[] contents = { 1, 2 };
+            var exception = Assert.Throws<ActionResultAssertionException>(() =>
+                _controller.WithCallTo(c => c.File()).ShouldRenderFileContents(contents));
+
+            Assert.True(exception.Message.StartsWith("Expected file contents to be "));
+            Assert.True(exception.Message.EndsWith("."));
+            Assert.True(string.Join(",", contents).All(exception.Message.Contains));
+            Assert.True(string.Join(",", ControllerResultTestController.FileContents).All(exception.Message.Contains));
+        }
+
         [Test]
         public void Check_for_file_result()
         {

TestStack.FluentMVCTesting.Tests/TestControllers/ControllerResultTestController.cs

@@ -15,6 +15,7 @@ class ControllerResultTestController : Controller
         public const int Code = 403;
         public const string JsonValue = "json";
         public const string FileName = "NamedFile";
+        public static byte[] FileContents = { 1 };
         #endregion
 
         #region Empty, Null and Random Results
@@ -161,7 +162,7 @@ public ActionResult EmptyFile()
 
         public ActionResult File()
         {
-            return EmptyFile();
+            return File(FileContents, FileContentType);
         }
 
         public ActionResult EmptyStream()

TestStack.FluentMvcTesting/ControllerResultTest.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using System.Linq.Expressions;
 using System.Net;
 using System.Reflection;
@@ -229,10 +230,21 @@ public FileResult ShouldRenderAnyFile(string contentType = null)
             return fileResult;
         }
 
-        public FileContentResult ShouldRenderFileContents()
+        public FileContentResult ShouldRenderFileContents(byte[] contents = null)
         {
             ValidateActionReturnType<FileContentResult>();
-            return (FileContentResult) _actionResult;
+
+            var fileResult = (FileContentResult) _actionResult;
+
+            if (contents != null && !fileResult.FileContents.SequenceEqual(contents))
+            {
+                throw new ActionResultAssertionException(string.Format(
+                    "Expected file contents to be equal to {0}, but instead was given {1}.",
+                    string.Join(",", contents),
+                    string.Join(",", fileResult.FileContents)));
+            }
+
+            return fileResult;
         }
 
         public FileContentResult ShouldRenderFile(string contentType = null)