public void LaunchTest(TestContext testContext)
{
var file = testContext.TestHarnessPath;
file = urlBuilder.GenerateFileUrl(testContext, file, fullyQualified: true);
// Start IE.
ProcessStartInfo startInfo = new ProcessStartInfo()
{
UseShellExecute = true,
FileName = BrowserPathHelper.GetBrowserPath("ie"),
Arguments = string.Format("-noframemerging -suspended -debug {0}", file)
// -noframemerging
// This is what VS does when launching the script debugger.
// Unsure whether strictly necessary.
// -suspended
// This is what VS does when launching the script debugger.
// Seems to cause IE to suspend all threads which is what we want.
// -debug
// This is what VS does when launching the script debugger.
// Not sure exactly what it does.
};
Process ieMainProcess = Process.Start(startInfo);
// Get child 'tab' process spawned by IE.
// We need to wait a few ms for IE to open the process.
Process ieTabProcess = null;
for (int i = 0;; ++i)
{
System.Threading.Thread.Sleep(10);
ieTabProcess = ProcessExtensions.FindFirstChildProcessOf(ieMainProcess.Id);
if (ieTabProcess != null)
{
break;
}
if (i > 400) // 400 * 10 = 4s timeout
{
throw new InvalidOperationException("Timeout waiting for Internet Explorer child process to start.");
}
}
// Debug the script in that tab process.
DteHelpers.DebugAttachToProcess(ieTabProcess.Id, "script");
// Resume the threads in the IE process which where started off suspended.
ieTabProcess.Resume();
}