public void ShouldTakeAndCompareScreenshot(string exampleName)
{
var fragmentBitmap = GetFragmentScreenshot(exampleName);
var expectedBitmap = VisualTestHelpers.LoadFromPng(Path.Combine(ExpectationsPath, GetDeviceId(_app), $"{exampleName}.png"));
VisualTestHelpers.CompareBitmaps(exampleName, fragmentBitmap, expectedBitmap);
}
private Bitmap GetFragmentScreenshot(string exampleName)
{
var actualScreenshotFileInfo = TakeScreenshotOfExample(exampleName);
var rect = _app.Query(c => c.Marked("fragment_container")).FirstOrDefault()?.Rect;
if (rect == null)
{
throw new InvalidOperationException("fragment_container has null rect");
}
var actualBitmap = VisualTestHelpers.LoadFromPng(actualScreenshotFileInfo.FullName);
var fragmentRect = new Rectangle((int)rect.X, (int)rect.Y, (int)rect.Width, (int)rect.Height);
var fragmentBitmap = new Bitmap(fragmentRect.Width, fragmentRect.Height);
using (var graphics = Graphics.FromImage(fragmentBitmap))
{
graphics.DrawImage(actualBitmap, 0, 0, fragmentRect, GraphicsUnit.Pixel);
}
return(fragmentBitmap);
}
public void UpdateScreenshotsWithExpectations(string exampleName)
{
var fragmentBitmap = GetFragmentScreenshot(exampleName);
VisualTestHelpers.SaveToPng(Path.Combine(ExpectationsPath, GetDeviceId(_app), $"{exampleName}.png"), fragmentBitmap);
}
