private void TestExtractor(
string input,
IExtractor extractor,
int maxMilliseconds,
string valueToValidate)
{
DateTime startTime = DateTime.Now;
IEnumerable <InfoItem> infoItems = extractor.ExtractInfo(input);
DateTime endTime = DateTime.Now;
Assert.IsNotNull(infoItems);
Assert.IsTrue(infoItems.Count() > 0);
Assert.IsTrue((endTime - startTime).TotalMilliseconds < maxMilliseconds);
Assert.AreEqual(infoItems.First().Value, valueToValidate);
}