Update ColorMatrix for grayscaling, stabilize tests

Author: mialeska

Aquality.Selenium.Core/src/Aquality.Selenium.Core/Visualization/ImageExtensions.cs

@@ -12,10 +12,10 @@ public static class ImageExtensions
     {
         private static readonly SKColorFilter ColorMatrix = SKColorFilter.CreateColorMatrix(new float[]
         {
-            .3f, .3f, .3f, 0, 0,
-            .59f, .59f, .59f, 0, 0,
-            .11f, .11f, .11f, 0, 0,
-            0, 0, 0, 1, 0
+            0.21f, 0.72f, 0.07f, 0, 0,
+            0.21f, 0.72f, 0.07f, 0, 0,
+            0.21f, 0.72f, 0.07f, 0, 0,
+            0,     0,     0,      1, 0
         });
 
         /// <summary>

Aquality.Selenium.Core/tests/Aquality.Selenium.Core.Tests/Visualization/ImageComparatorTests.cs

@@ -1,4 +1,5 @@
 using Aquality.Selenium.Core.Elements;
+using Aquality.Selenium.Core.Waitings;
 using Aquality.Selenium.Core.Tests.Applications.Browser;
 using Aquality.Selenium.Core.Tests.Applications.Browser.Elements;
 using Aquality.Selenium.Core.Visualization;
@@ -67,6 +68,7 @@ public void Should_BePossibleTo_GetPercentageDifference_ForSimilarElements()
         {
             StartLoading();
             var firstImage = LoadingLabel.GetElement().GetScreenshot().AsImage();
+            AqualityServices.ServiceProvider.GetRequiredService<IConditionalWait>().WaitFor(() => firstImage.Height < LoadingLabel.Visual.Size.Height);
             var secondImage = LoadingLabel.GetElement().GetScreenshot().AsImage();
             Assert.Multiple(() =>
             {

Aquality.Selenium.Core/tests/Aquality.Selenium.Core.Tests/Visualization/VisualStateProviderTests.cs

@@ -1,11 +1,13 @@
 using Aquality.Selenium.Core.Elements;
+using Aquality.Selenium.Core.Waitings;
 using Aquality.Selenium.Core.Tests.Applications.Browser;
 using Aquality.Selenium.Core.Tests.Applications.Browser.Elements;
 using NUnit.Framework;
 using OpenQA.Selenium;
 using SkiaSharp;
 using System;
 using System.Drawing;
+using Microsoft.Extensions.DependencyInjection;
 
 namespace Aquality.Selenium.Core.Tests.Visualization
 {
@@ -85,6 +87,7 @@ public void Should_BePossibleTo_GetPercentageDifference_ForSimilarElements()
         {
             StartLoading();
             var firstImage = LoadingLabel.Visual.Image;
+            AqualityServices.ServiceProvider.GetRequiredService<IConditionalWait>().WaitFor(() => firstImage.Height < LoadingLabel.Visual.Size.Height);
             Assert.Multiple(() =>
             {
                 Assert.That(LoadingLabel.Visual.GetDifference(firstImage, threshold: 0), Is.Not.EqualTo(0));