Added assert to test

Author: khellang

test/Microsoft.AspNet.Http.Tests/FormFeatureTests.cs

@@ -215,6 +215,7 @@ public async Task ReadFormAsync_MultipartWithFile_ReturnsParsedFormCollection()
             Assert.Equal(1, formCollection.Files.Count);
 
             var file = formCollection.Files["myfile1"];
+            Assert.Equal("myfile1", file.Name);
             Assert.Equal("text/html", file.ContentType);
             Assert.Equal(@"form-data; name=""myfile1""; filename=""temp.html""", file.ContentDisposition);
             var body = file.OpenReadStream();