Tests - Add Artemis.Core and profile editor test suites (#907)

src/Artemis.Core.Tests/Infrastructure/Services/TestInputProvider.cs

@@ -0,0 +1,18 @@
+using Artemis.Core.Services;
+
+namespace Artemis.Core.Tests.Infrastructure.Services;
+
+/// <summary>
+///     An input provider the test presses keys on, the real providers hook into the operating system
+/// </summary>
+public class TestInputProvider : InputProvider
+{
+    /// <summary>
+    ///     Presses and releases the key
+    /// </summary>
+    public void Press(KeyboardKey key)
+    {
+        OnKeyboardDataReceived(null, key, true);
+        OnKeyboardDataReceived(null, key, false);
+    }
+}