[Testing] Added Left/Right Cropping Support for Screenshot Verification in UI Tests

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue15154.cs

@@ -20,7 +20,11 @@ public void ShouldFlyoutTextWrapsInLandscape()
 		App.WaitForElement("OpenFlyoutButton");
 		App.Tap("OpenFlyoutButton");
 		App.SetOrientationLandscape();
+#if ANDROID
+		VerifyScreenshot(cropLeft: 125);
+#else
 		VerifyScreenshot();
+#endif
 	}
 }
 #endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue22606.cs

@@ -29,7 +29,11 @@ public void BorderBackgroundSizeUpdatesWhenRotatingScreen()
 			App.WaitForElement("SetHeightTo200");
 			App.Tap("SetHeightTo200");
 			App.SetOrientationLandscape();
+#if ANDROID
+			VerifyScreenshot(cropLeft: 125);
+#else
 			VerifyScreenshot();
+#endif
 		}
 #endif
 	}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue28523.cs

@@ -19,7 +19,11 @@ public void CarouselViewItemShouldScaleProperly()
 		App.WaitForElement("Baboon");
 		App.SetOrientationLandscape();
 		App.WaitForElement("Baboon");
+#if ANDROID
+		VerifyScreenshot(cropLeft: 125);
+#else
 		VerifyScreenshot();
+#endif
 	}
 
 	[TearDown]

src/Controls/tests/TestCases.Shared.Tests/UITest.cs

@@ -124,6 +124,8 @@ public void VerifyScreenshotOrSetException(
 			ref Exception? exception,
 			string? name = null,
 			TimeSpan? retryDelay = null,
+			int cropLeft = 0,
+			int cropRight = 0,
 			int cropTop = 0,
 			int cropBottom = 0,
 			double tolerance = 0.0
@@ -134,7 +136,7 @@ public void VerifyScreenshotOrSetException(
 		{
 			try
 			{
-				VerifyScreenshot(name, retryDelay, cropTop, cropBottom, tolerance
+				VerifyScreenshot(name, retryDelay, cropLeft, cropRight, cropTop, cropBottom, tolerance
 #if MACUITEST || WINTEST
 				, includeTitleBar
 #endif
@@ -151,6 +153,8 @@ public void VerifyScreenshotOrSetException(
 		/// </summary>
 		/// <param name="name">Optional name for the screenshot. If not provided, a default name will be used.</param>
 		/// <param name="retryDelay">Optional delay between retry attempts when verification fails.</param>
+		/// <param name="cropLeft">Number of pixels to crop from the left of the screenshot.</param>
+		/// <param name="cropRight">Number of pixels to crop from the right of the screenshot.</param>
 		/// <param name="cropTop">Number of pixels to crop from the top of the screenshot.</param>
 		/// <param name="cropBottom">Number of pixels to crop from the bottom of the screenshot.</param>
 		/// <param name="tolerance">Tolerance level for image comparison as a percentage from 0 to 100.</param>
@@ -179,6 +183,8 @@ public void VerifyScreenshotOrSetException(
 		public void VerifyScreenshot(
 			string? name = null,
 			TimeSpan? retryDelay = null,
+			int cropLeft = 0,
+			int cropRight = 0,
 			int cropTop = 0,
 			int cropBottom = 0,
 			double tolerance = 0.0 // Add tolerance parameter (0.05 = 5%)
@@ -316,16 +322,24 @@ but both can happen.
 					TestDevice.iOS => 40,
 					_ => 0,
 				};
+
+				// For Android also crop the 3 button nav from the left or right, since it's not part of the
+				// app itself and the button color can vary (the buttons change clear briefly when tapped).
+				// For iOS, crop the home indicator at the bottom.
+				int cropFromLeft = 0;
+				int cropFromRight = 0;
 
+				cropFromLeft = cropLeft > 0 ? cropLeft : cropFromLeft;
+				cropFromRight = cropRight > 0 ? cropRight : cropFromRight;
 				cropFromTop = cropTop > 0 ? cropTop : cropFromTop;
 				cropFromBottom = cropBottom > 0 ? cropBottom : cropFromBottom;
 
-				if (cropFromTop > 0 || cropFromBottom > 0)
+				if (cropFromLeft > 0 || cropFromRight > 0 || cropFromTop > 0 || cropFromBottom > 0)
 				{
 					IImageEditor imageEditor = _imageEditorFactory.CreateImageEditor(actualImage);
 					(int width, int height) = imageEditor.GetSize();
 
-					imageEditor.Crop(0, cropFromTop, width, height - cropFromTop - cropFromBottom);
+					imageEditor.Crop(cropFromLeft, cropFromTop, width - cropFromLeft - cropFromRight, height - cropFromTop - cropFromBottom);
 
 					actualImage = imageEditor.GetUpdatedImage();
 				}