public void HeadersTest_Should_Not_Send_File_IfPreconditionFailed()
{
Request.Headers[HttpHeaders.IfMatch] = "invalid";
var result = new MockResumeFileResult(_file.FullName, ContentType, Request);
Assert.IsTrue(result.IsPreconditionFailed());
result.WriteFileTest(Response);
Assert.AreEqual((int)HttpStatusCode.PreconditionFailed, Response.StatusCode);
Assert.IsNotNull(Response.Headers[HttpHeaders.Etag]);
Assert.IsNotNull(Response.Headers[HttpHeaders.Expires]);
Assert.IsNotNull(Response.Headers[HttpHeaders.LastModified]);
Assert.IsNull(Response.Headers[HttpHeaders.ContentRange]);
Assert.AreEqual(0, Response.OutputStream.Length);
}