Microsoft.Protocols.TestSuites.Rdp.RdpTestClassBase.VerifySUTDisplay C# (CSharp) Method

        protected void VerifySUTDisplay(bool usingRemoteFX, Rectangle compareRect, int callStackIndex = 1)
        {
            if (!verifySUTDisplay || this.rdpbcgrAdapter.SimulatedScreen == null)
            {
                return;
            }

            imageId++;

            // Get test method name and construct file name for screenshot bitmap
            StackTrace st = new StackTrace();
            StackFrame sf = st.GetFrame(callStackIndex);
            string pathForSUTScreenShot = bitmapSavePath + @"\" + sf.GetMethod().Name + "_" + imageId + "_ScreenShot.bmp";
            // Not save the bitmap to the path directly since the interface has limit on the length of path.
            // Save the bitmap into a temprory file and copy it to the right file path.
            int result = this.sutControlAdapter.CaptureScreenShot(tmpFilePath);
            File.Copy(tmpFilePath, pathForSUTScreenShot, true);
            this.TestSite.Assume.IsTrue(result >= 0, "To verify output of RDP client, the protocol-based SUT control adapter should be used and the Agent on SUT should support screenshot control command.");

            // Compare the screenshot with base image in simulated screen
            Bitmap image = new Bitmap(pathForSUTScreenShot);
            string pathForBaseImage = bitmapSavePath + @"\" + sf.GetMethod().Name + "_" + imageId + "_BaseImage.bmp";
            this.rdpbcgrAdapter.SimulatedScreen.BaseImage.Save(tmpFilePath);
            File.Copy(tmpFilePath, pathForBaseImage, true);

            bool compareRes = this.rdpbcgrAdapter.SimulatedScreen.Compare(image, sutDisplayShift, compareRect, usingRemoteFX);
            this.TestSite.Assert.IsTrue(compareRes, "SUT display verification failed, the output on RDP client is not equal (or similar enough if using RemoteFX codec) as expected.");
        }