When doing web testing using Watin, it is not trivial to be able to do a POST request to the server. However, with the help this article on microsoft.com, I was able to figure out how. I ended up with writing this class:
public class Navigator
{
private IE _ie;
public Navigator(IE ie) { _ie = ie; }
public void Post(Uri baseUri, params KeyValuePair<string, object>[] postData)
{
object flags = null;
object targetFrame = null;
object headers = "Content-Type: application/x-www-form-urlencoded" + Convert.ToChar(10) + Convert.ToChar(13);
object postDataBytes = MakeByteStreamOf(postData);
object resourceLocator = baseUri.ToString();
IWebBrowser2 browser = (IWebBrowser2)_ie.InternetExplorer;
browser.Navigate2(ref resourceLocator, ref flags, ref targetFrame, ref postDataBytes, ref headers);
_ie.WaitForComplete();
}
private static byte[] MakeByteStreamOf(KeyValuePair<string, object>[] postData)
{
StringBuilder sb = new StringBuilder();
if (postData.Length > 0)
{
foreach (KeyValuePair<string, object> postDataEntry in postData)
{
sb.Append(postDataEntry.Key).Append('=').Append(postDataEntry.Value).Append('&');
}
sb.Remove(sb.Length - 1, 1);
}
return ASCIIEncoding.ASCII.GetBytes(sb.ToString());
}
}
For example, I can use it like so:
using (IE ie = new IE())
{
Navigator navigator = new Navigator(ie);
navigator.Post(new Uri("http://www.foo.com/"), new KeyValuePair<string, object>("p", 1));
Assert.AreEqual("OK", ie.Text);
}