Add a unit test for MockFileInfo.OpenRead

Author: Dirk Rombauts

TestHelpers.Tests/MockFileInfoTests.cs

@@ -188,5 +188,23 @@ public void MockFileInfo_GetDirectory_ShouldReturnDirectoryInfoWithCorrectPath()
 
             Assert.AreEqual(@"c:\temp\level1\level2\", result.FullName);
         }
+
+        [Test]
+        public void MockFileInfo_OpenRead_ShouldReturnByteContentOfFile()
+        {
+            // Arrange
+            var fileSystem = new MockFileSystem();
+            fileSystem.AddFile(@"c:\temp\file.txt", new MockFileData(new byte[] { 1, 2 }));
+            var fileInfo = fileSystem.FileInfo.FromFileName(@"c:\temp\file.txt");
+
+            // Act
+            byte[] result = new byte[2];
+            using (var stream = fileInfo.OpenRead())
+            {
+                stream.Read(result, 0, 2);
+            }
+
+            Assert.AreEqual(new byte[] { 1, 2 }, result);
+        }
     }
 }