Execute Screenshot tests on the main thread (#3752)

* Try with a delay * - execute on main thread * - wait * Update Screenshot_Tests.cs
dotnet · Dec 16, 2021 · f118c44 · f118c44
1 parent 1cd8f03
commit f118c44
Showing 1 changed file with 16 additions and 8 deletions.
diff --git a/src/Essentials/test/DeviceTests/Tests/Screenshot_Tests.cs b/src/Essentials/test/DeviceTests/Tests/Screenshot_Tests.cs
@@ -9,19 +9,27 @@ namespace Microsoft.Maui.Essentials.DeviceTests
 	public class Screenshot_Tests
 	{
 		[Fact]
-		public async Task GetPngScreenshot()
+		public Task GetPngScreenshot()
 		{
-			var mediaFile = await Screenshot.CaptureAsync();
-			var png = await mediaFile.OpenReadAsync(ScreenshotFormat.Png);
-			Assert.True(png.Length > 0);
+			return Utils.OnMainThread(async () =>
+			{
+				await Task.Delay(100);
+				ScreenshotResult mediaFile = await Screenshot.CaptureAsync();
+				var png = await mediaFile.OpenReadAsync(ScreenshotFormat.Png);
+				Assert.True(png.Length > 0);
+			});
 		}
 
 		[Fact]
-		public async Task GetJpegScreenshot()
+		public Task GetJpegScreenshot()
 		{
-			var mediaFile = await Screenshot.CaptureAsync();
-			var png = await mediaFile.OpenReadAsync(ScreenshotFormat.Jpeg);
-			Assert.True(png.Length > 0);
+			return Utils.OnMainThread(async () =>
+			{
+				await Task.Delay(100);
+				ScreenshotResult mediaFile = await Screenshot.CaptureAsync();
+				var png = await mediaFile.OpenReadAsync(ScreenshotFormat.Jpeg);
+				Assert.True(png.Length > 0);
+			});
 		}
 	}
 }