public void CropImage_ValidateSizeIsAsExpected()
{
var newBm = new Bitmap(500, 500);
var targetSize = new Rectangle(125, 125, 125, 125);
using (var actual = ImagingUtilities.CropToSelection(newBm, targetSize))
{
Assert.AreEqual(125, actual.Height);
Assert.AreEqual(125, actual.Width);
}
}
public void PercentageDifferences_DifferentSize_ThrowsException()
{
using (var newBm = new Bitmap(500, 500))
{
using (var newBm2 = new Bitmap(200, 200))
{
Assert.Throws <ImageComparisonSizeDifferenceException>(
() => ImagingUtilities.PercentageDifference(newBm, newBm2, string.Empty));
}
}
}
public void CropImage_ValidateCroppedAreaIsAsExpected()
{
// create a new image
using (var newBm = new Bitmap(500, 500))
{
// define the crop size
var targetSize = new Rectangle(125, 125, 125, 125);
// fill in the crop to a solid colour
using (var newGrapics = Graphics.FromImage(newBm))
{
newGrapics.CompositingQuality = CompositingQuality.HighSpeed;
newGrapics.SmoothingMode = SmoothingMode.HighSpeed;
newGrapics.InterpolationMode = InterpolationMode.HighQualityBicubic;
SolidBrush brush = new SolidBrush(Color.Red);
SolidBrush backgroundBrush = new SolidBrush(Color.Green);
newGrapics.FillRectangle(backgroundBrush, new Rectangle(0, 0, 500, 500));
newGrapics.FillRectangle(brush, targetSize);
}
//newBm.Save("D:\\Temp\\source.png", ImageFormat.Png);
// performt he crop
using (Bitmap actual = new Bitmap(ImagingUtilities.CropToSelection(newBm, targetSize)))
{
Assert.AreEqual(125, actual.Height);
Assert.AreEqual(125, actual.Width);
//actual.Save("D:\\Temp\\sized.png", ImageFormat.Png);
// verify that all pixels are red
int DiferentPixelCount = 0;
Color expectedColor = Color.FromArgb(255, Color.Red);
for (int i = 0; i < actual.Width; ++i)
{
for (int j = 0; j < actual.Height; ++j)
{
Color pixelColor = actual.GetPixel(i, j);
if (pixelColor != expectedColor)
{
DiferentPixelCount++;
}
}
}
Assert.AreEqual(0, DiferentPixelCount, "Number of pixels that are not red is incorrect");
}
}
}
/// <summary>
/// Takes a screenshot - if there is an alert, an error occurs
/// </summary>
/// <param name="driver"></param>
/// <param name="fullSavePath">Destination save path</param>
/// <param name="imageOverlayText"></param>
/// <param name="useGreenBrushColour">Should the brush colour be in red or the default green</param>
public static void TakeScreenshot(IWebDriver driver, string fullSavePath, string imageOverlayText = "", bool useGreenBrushColour = false)
{
try
{
Screenshot screenshot = driver.TakeScreenshot();
if (screenshot.PersistScreenshot(fullSavePath.SanitisePath()))
{
if (!string.IsNullOrWhiteSpace(imageOverlayText))
{
ImagingUtilities.OverlayTextOntoImage(fullSavePath.SanitisePath(), imageOverlayText, true, !useGreenBrushColour);
}
}
}
catch (Exception e)
{
LogX.Error.Write("An error occurred while taking screenshot. {0}", e.ToString());
}
}
/// <summary>
/// Takes a screenshot and crops it to the specified target element
/// </summary>
/// <param name="driver"></param>
/// <param name="targetElement">The element to crop to</param>
/// <param name="fullSavePath">Destination save path</param>
public static void TakeScreenshotAndCropToElement(IWebDriver driver, IWebElement targetElement, string fullSavePath)
{
try
{
Screenshot screenshot = driver.TakeScreenshot();
using (var image = Image.FromStream(new MemoryStream(screenshot.AsByteArray)))
{
var coords = new Rectangle(targetElement.Location, targetElement.Size);
using (var newImage = ImagingUtilities.CropToSelection(image, coords))
{
ImagingUtilities.SaveImage(newImage, fullSavePath.SanitisePath());
}
}
}
catch (Exception e)
{
LogX.Error.Write("An error occurred while taking screenshot. {0}", e.ToString());
}
}
public void PercentageDifferences_DifferentImage_NoSave()
{
using (var newBm = new Bitmap(500, 500))
{
// define the crop size
var targetSize = new Rectangle(125, 125, 125, 125);
// fill in the crop to a solid colour
using (var newGrapics = Graphics.FromImage(newBm))
{
newGrapics.CompositingQuality = CompositingQuality.HighSpeed;
newGrapics.SmoothingMode = SmoothingMode.HighSpeed;
newGrapics.InterpolationMode = InterpolationMode.HighQualityBicubic;
SolidBrush brush = new SolidBrush(Color.Red);
SolidBrush backgroundBrush = new SolidBrush(Color.Green);
newGrapics.FillRectangle(backgroundBrush, new Rectangle(0, 0, 500, 500));
newGrapics.FillRectangle(brush, targetSize);
}
using (var newBm2 = new Bitmap(500, 500))
{
// define the crop size
var targetSize2 = new Rectangle(250, 250, 250, 250);
// fill in the crop to a solid colour
using (var newGrapics = Graphics.FromImage(newBm2))
{
newGrapics.CompositingQuality = CompositingQuality.HighSpeed;
newGrapics.SmoothingMode = SmoothingMode.HighSpeed;
newGrapics.InterpolationMode = InterpolationMode.HighQualityBicubic;
SolidBrush brush = new SolidBrush(Color.Red);
SolidBrush backgroundBrush = new SolidBrush(Color.Green);
newGrapics.FillRectangle(backgroundBrush, new Rectangle(0, 0, 500, 500));
newGrapics.FillRectangle(brush, targetSize2);
}
var difference = ImagingUtilities.PercentageDifference(newBm, newBm2, string.Empty);
Assert.AreEqual(31.25, difference);
}
}
}
/// <summary>
/// Takes a screenshot and highlights the specified target element
/// </summary>
/// <param name="driver"></param>
/// <param name="targetElement">The element to highlight</param>
/// <param name="fullSavePath">Destination save path</param>
/// <param name="highlightInRed">Should the brush colour be in red or the default yellow</param>
public static void TakeScreenshotAndHighlightElement(IWebDriver driver, IWebElement targetElement, string fullSavePath, bool highlightInRed = false)
{
try
{
Screenshot screenshot = driver.TakeScreenshot();
var coordinates = targetElement.GetRectangle();
using (var memoryStream = new MemoryStream(screenshot.AsByteArray))
{
using (var image = Image.FromStream(memoryStream))
{
using (var newImage = ImagingUtilities.HilightZone(image, coordinates, 5, highlightInRed))
{
ImagingUtilities.SaveImage(newImage, fullSavePath.SanitisePath());
}
}
}
}
catch (Exception e)
{
LogX.Error.Write("An error occurred while taking screenshot. {0}", e.ToString());
}
}
public void HilightZone_OnePxRed()
{
using (var newBm = new Bitmap(500, 500))
{
// define the crop size
var targetSize = new Rectangle(125, 125, 125, 125);
// fill in the crop to a solid colour
using (var newGrapics = Graphics.FromImage(newBm))
{
newGrapics.CompositingQuality = CompositingQuality.HighSpeed;
newGrapics.SmoothingMode = SmoothingMode.HighSpeed;
newGrapics.InterpolationMode = InterpolationMode.HighQualityBicubic;
SolidBrush brush = new SolidBrush(Color.Blue);
SolidBrush backgroundBrush = new SolidBrush(Color.Green);
newGrapics.FillRectangle(backgroundBrush, new Rectangle(0, 0, 500, 500));
newGrapics.FillRectangle(brush, targetSize);
}
//newBm.Save("D:\\Temp\\hilightedRed_Pre.png", ImageFormat.Png);
using (var newImage = new Bitmap(ImagingUtilities.HilightZone(newBm, targetSize, 1, true)))
{
int incorrectPixels = 0;
Color expectedColor = Color.FromArgb(255, Color.Red);
//newImage.Save("D:\\Temp\\hilightedRed_post.png", ImageFormat.Png);
// check each pixel along the top of the box
for (var i = 0; i < 125; i++)
{
Color pixelColor = newImage.GetPixel(125, 125 + i);
if (pixelColor != expectedColor)
{
incorrectPixels++;
}
}
// check each pixel along the bottom of the box
for (var i = 0; i < 125; i++)
{
Color pixelColor = newImage.GetPixel(250, 125 + i);
if (pixelColor != expectedColor)
{
incorrectPixels++;
}
}
// check each pixel along the left edge
for (var i = 0; i < 125; i++)
{
Color pixelColor = newImage.GetPixel(125, 125 + i);
if (pixelColor != expectedColor)
{
incorrectPixels++;
}
}
// check each pixel along the right edge
for (var i = 0; i < 125; i++)
{
Color pixelColor = newImage.GetPixel(250, 125 + i);
if (pixelColor != expectedColor)
{
incorrectPixels++;
}
}
Assert.AreEqual(0, incorrectPixels, "Number of pixels that are red is incorrect");
}
}
}