Converting Tests back to C# but still with Playwright

Tests/Shared/ToastComponent.cs

@@ -0,0 +1,36 @@
+namespace Tests.Shared;
+
+public class ToastComponent
+{
+    private readonly Website _website;
+    public ToastComponent(Website website) => _website = website;
+
+    public ILocator Container => _website.Locator(".toastsContainer");
+    public ILocator Toasts => _website.Locator(".toastsContainer .toastContainer");
+
+    public async Task<IReadOnlyList<string>> GetToastTitlesAsync()
+    {
+        var titles = await _website.Locator(".toastsContainer .toastTitle").AllTextContentsAsync();
+        return titles.Select(t => t.Trim()).Where(t => !string.IsNullOrEmpty(t)).ToList();
+    }
+
+    public async Task<bool> HasToastContainingAsync(string text)
+    {
+        try
+        {
+            await _website.Page.WaitForFunctionAsync(
+                @"(expected) => {
+                    const titles = document.querySelectorAll('.toastsContainer .toastTitle');
+                    return Array.from(titles).some(t => t.textContent.trim().includes(expected));
+                }",
+                text,
+                new() { Timeout = 3000 }
+            );
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+}