Remove dependency on fluent assertions and fix folder paths

TerminalGuiFluentTesting/FakeInput.cs

@@ -0,0 +1,34 @@
+using System.Collections.Concurrent;
+using Terminal.Gui;
+
+namespace TerminalGuiFluentTesting;
+
+internal class FakeInput<T> : IConsoleInput<T>
+{
+    private readonly CancellationToken _hardStopToken;
+
+    private readonly CancellationTokenSource _timeoutCts;
+
+    public FakeInput (CancellationToken hardStopToken)
+    {
+        _hardStopToken = hardStopToken;
+
+        // Create a timeout-based cancellation token too to prevent tests ever fully hanging
+        _timeoutCts = new (With.Timeout);
+    }
+
+    /// <inheritdoc/>
+    public void Dispose () { }
+
+    /// <inheritdoc/>
+    public void Initialize (ConcurrentQueue<T> inputBuffer) { InputBuffer = inputBuffer; }
+
+    public ConcurrentQueue<T> InputBuffer { get; set; }
+
+    /// <inheritdoc/>
+    public void Run (CancellationToken token)
+    {
+        // Blocks until either the token or the hardStopToken is cancelled.
+        WaitHandle.WaitAny (new [] { token.WaitHandle, _hardStopToken.WaitHandle, _timeoutCts.Token.WaitHandle });
+    }
+}