Look up chrome buttons by a11y id.

XPath is slower, and unnecessary here.

tests/Avalonia.IntegrationTests.Appium/ElementExtensions.cs

@@ -12,9 +12,10 @@ using Xunit;
 namespace Avalonia.IntegrationTests.Appium
 {
     public record class WindowChrome(
-        AppiumWebElement Close,
-        AppiumWebElement Minimize,
-        AppiumWebElement Maximize);
+        AppiumWebElement? Close,
+        AppiumWebElement? Minimize,
+        AppiumWebElement? Maximize,
+        AppiumWebElement? FullScreen);
 
     internal static class ElementExtensions
     {
@@ -25,10 +26,11 @@ namespace Avalonia.IntegrationTests.Appium
         {
             if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
             {
-                var closeButton = window.FindElementByXPath("//XCUIElementTypeButton[1]");
-                var fullscreenButton = window.FindElementByXPath("//XCUIElementTypeButton[2]");
-                var minimizeButton = window.FindElementByXPath("//XCUIElementTypeButton[3]");
-                return new(closeButton, minimizeButton, fullscreenButton);
+                var closeButton = window.FindElementsByAccessibilityId("_XCUI:CloseWindow").FirstOrDefault();
+                var fullscreenButton = window.FindElementsByAccessibilityId("_XCUI:FullScreenWindow").FirstOrDefault();
+                var minimizeButton = window.FindElementsByAccessibilityId("_XCUI:MinimizeWindow").FirstOrDefault();
+                var zoomButton = window.FindElementsByAccessibilityId("_XCUI:ZoomWindow").FirstOrDefault();
+                return new(closeButton, minimizeButton, zoomButton, fullscreenButton);
             }
 
             throw new NotSupportedException("GetChromeButtons not supported on this platform.");
@@ -143,7 +145,7 @@ namespace Avalonia.IntegrationTests.Appium
                     var text = windows.Select(x => x.Text).ToList();
                     var newWindow = session.FindElements(By.XPath("/XCUIElementTypeApplication/XCUIElementTypeWindow"))
                         .First(x => x.Text == newWindowTitle);
-                    var (close, _, _) = ((AppiumWebElement)newWindow).GetChromeButtons();
+                    var close = ((AppiumWebElement)newWindow).GetChromeButtons().Close;
                     close!.Click();
                     Thread.Sleep(1000);
                 });

tests/Avalonia.IntegrationTests.Appium/WindowTests_MacOS.cs

@@ -85,7 +85,7 @@ namespace Avalonia.IntegrationTests.Appium
             var mainWindow = GetWindow("MainWindow");
             var buttons = mainWindow.GetChromeButtons();
 
-            buttons.Maximize.Click();
+            buttons.FullScreen.Click();
 
             Thread.Sleep(500);
 
@@ -239,17 +239,18 @@ namespace Avalonia.IntegrationTests.Appium
         public void Parent_Window_Has_Disabled_ChromeButtons_When_Modal_Dialog_Shown()
         {
             var window = GetWindow("MainWindow");
-            var (closeButton, miniaturizeButton, zoomButton) = window.GetChromeButtons();
+            var windowChrome = window.GetChromeButtons();
 
-            Assert.True(closeButton.Enabled);
-            Assert.True(zoomButton.Enabled);
-            Assert.True(miniaturizeButton.Enabled);
+            Assert.True(windowChrome.Close.Enabled);
+            Assert.True(windowChrome.Maximize.Enabled);
+            Assert.True(windowChrome.Maximize.Enabled);
+            Assert.Null(windowChrome.FullScreen.Enabled);
 
             using (OpenWindow(new PixelSize(200, 100), ShowWindowMode.Modal, WindowStartupLocation.CenterOwner))
             {
-                Assert.False(closeButton.Enabled);
-                Assert.False(zoomButton.Enabled);
-                Assert.False(miniaturizeButton.Enabled);
+                Assert.False(windowChrome.Close.Enabled);
+                Assert.False(windowChrome.Maximize.Enabled);
+                Assert.False(windowChrome.Minimize.Enabled);
             }
         }
 
@@ -259,11 +260,11 @@ namespace Avalonia.IntegrationTests.Appium
             using (OpenWindow(new PixelSize(200, 100), ShowWindowMode.Modal, WindowStartupLocation.CenterOwner))
             {
                 var secondaryWindow = GetWindow("SecondaryWindow");
-                var (closeButton, miniaturizeButton, zoomButton) = secondaryWindow.GetChromeButtons();
+                var windowChrome = secondaryWindow.GetChromeButtons();
 
-                Assert.True(closeButton.Enabled);
-                Assert.True(zoomButton.Enabled);
-                Assert.False(miniaturizeButton.Enabled);
+                Assert.True(windowChrome.Close.Enabled);
+                Assert.True(windowChrome.Maximize.Enabled);
+                Assert.False(windowChrome.Minimize.Enabled);
             }
         }
         
@@ -274,7 +275,7 @@ namespace Avalonia.IntegrationTests.Appium
             using (OpenWindow(new PixelSize(200, 100), mode, WindowStartupLocation.Manual))
             {
                 var secondaryWindow = GetWindow("SecondaryWindow");
-                var (_, miniaturizeButton, _) = secondaryWindow.GetChromeButtons();
+                var miniaturizeButton = secondaryWindow.GetChromeButtons().Minimize;
 
                 Assert.False(miniaturizeButton.Enabled);
             }
@@ -288,7 +289,7 @@ namespace Avalonia.IntegrationTests.Appium
             using (OpenWindow(new PixelSize(200, 100), mode, WindowStartupLocation.Manual))
             {
                 var secondaryWindow = GetWindow("SecondaryWindow");
-                var (_, miniaturizeButton, _) = secondaryWindow.GetChromeButtons();
+                var miniaturizeButton = secondaryWindow.GetChromeButtons().Minimize;
 
                 miniaturizeButton.Click();
                 Thread.Sleep(1000);
@@ -344,7 +345,7 @@ namespace Avalonia.IntegrationTests.Appium
             using (OpenWindow(null, mode, WindowStartupLocation.Manual, canResize: false))
             {
                 var secondaryWindow = GetWindow("SecondaryWindow");
-                var (_, _, zoomButton) = secondaryWindow.GetChromeButtons();
+                var zoomButton = secondaryWindow.GetChromeButtons().Maximize;
                 Assert.False(zoomButton.Enabled);
             }
         }