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Investigate fluent assertions for testing v2
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7 files changed

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‎Terminal.Gui/Terminal.Gui.csproj

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@@ -86,6 +86,7 @@
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<InternalsVisibleTo Include="StressTests" />
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<InternalsVisibleTo Include="IntegrationTests" />
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<InternalsVisibleTo Include="TerminalGuiDesigner" />
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<InternalsVisibleTo Include="TerminalGuiFluentAssertions" />
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<InternalsVisibleTo Include="DynamicProxyGenAssembly2" />
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</ItemGroup>
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<!-- =================================================================== -->

‎Terminal.sln

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@@ -62,6 +62,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "StressTests", "Tests\Stress
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTests.Parallelizable", "Tests\UnitTestsParallelizable\UnitTests.Parallelizable.csproj", "{DE780834-190A-8277-51FD-750CC666E82D}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TerminalGuiFluentAssertions", "TerminalGuiFluentAssertions\TerminalGuiFluentAssertions.csproj", "{7C610F03-9E38-409F-9B21-A02D5569E16A}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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{DE780834-190A-8277-51FD-750CC666E82D}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{DE780834-190A-8277-51FD-750CC666E82D}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{DE780834-190A-8277-51FD-750CC666E82D}.Release|Any CPU.Build.0 = Release|Any CPU
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{7C610F03-9E38-409F-9B21-A02D5569E16A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{7C610F03-9E38-409F-9B21-A02D5569E16A}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{7C610F03-9E38-409F-9B21-A02D5569E16A}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{7C610F03-9E38-409F-9B21-A02D5569E16A}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE

‎TerminalGuiFluentAssertions/Class1.cs

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using System.Collections.Concurrent;
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using System.Drawing;
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using Terminal.Gui;
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namespace TerminalGuiFluentAssertions;
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class FakeInput<T> : IConsoleInput<T>
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{
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/// <inheritdoc />
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public void Dispose () { }
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/// <inheritdoc />
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public void Initialize (ConcurrentQueue<T> inputBuffer) { }
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/// <inheritdoc />
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public void Run (CancellationToken token)
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{
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// Simulate an infinite loop that checks for cancellation
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token.WaitHandle.WaitOne (); // Blocks until the token is cancelled
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}
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}
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class FakeNetInput : FakeInput<ConsoleKeyInfo>, INetInput
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{
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}
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class FakeWindowsInput : FakeInput<WindowsConsole.InputRecord>, IWindowsInput
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{
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}
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class FakeOutput : IConsoleOutput
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{
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public Size Size { get; set; }
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/// <inheritdoc />
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public void Dispose ()
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{
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}
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/// <inheritdoc />
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public void Write (ReadOnlySpan<char> text)
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{
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}
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/// <inheritdoc />
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public void Write (IOutputBuffer buffer)
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{
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}
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/// <inheritdoc />
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public Size GetWindowSize ()
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{
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return Size;
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}
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/// <inheritdoc />
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public void SetCursorVisibility (CursorVisibility visibility)
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{
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}
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/// <inheritdoc />
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public void SetCursorPosition (int col, int row)
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{
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}
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}
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/// <summary>
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/// Entry point to fluent assertions.
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/// </summary>
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public static class With
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{
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/// <summary>
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/// Entrypoint to fluent assertions
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/// </summary>
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/// <param name="width"></param>
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/// <param name="height"></param>
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/// <returns></returns>
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public static GuiTestContext<T> A<T> (int width, int height) where T : Toplevel, new ()
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{
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return new GuiTestContext<T> (width,height);
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}
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}
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public class GuiTestContext<T> where T : Toplevel, new()
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{
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private readonly CancellationTokenSource _cts;
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private readonly Task _runTask;
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internal GuiTestContext (int width, int height)
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{
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IApplication origApp = ApplicationImpl.Instance;
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var netInput = new FakeNetInput ();
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var winInput = new FakeWindowsInput ();
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var output = new FakeOutput ();
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output.Size = new (width, height);
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var v2 = new ApplicationV2(
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() => netInput,
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()=>output,
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() => winInput,
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() => output);
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// Create a cancellation token
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_cts = new ();
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// Start the application in a background thread
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_runTask = Task.Run (() =>
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{
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try
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{
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ApplicationImpl.ChangeInstance (v2);
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v2.Init ();
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Application.Run<T> (); // This will block, but it's on a background thread now
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Application.Shutdown ();
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}
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catch (OperationCanceledException)
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{
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}
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finally
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{
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ApplicationImpl.ChangeInstance (origApp);
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}
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}, _cts.Token);
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Application.Shutdown ();
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}
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/// <summary>
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/// Stops the application and waits for the background thread to exit.
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/// </summary>
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public void Stop ()
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{
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_cts.Cancel ();
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Application.Invoke (()=>Application.RequestStop());
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_runTask.Wait (); // Ensure the background thread exits
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}
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// Cleanup to avoid state bleed between tests
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public void Dispose ()
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{
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}
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}
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‎TerminalGuiFluentAssertions/TerminalGuiFluentAssertions.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<ProjectReference Include="..\Terminal.Gui\Terminal.Gui.csproj" />
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</ItemGroup>
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</Project>

‎Tests/UnitTests/ConsoleDrivers/V2/ApplicationV2Tests.cs

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@@ -6,7 +6,7 @@
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namespace UnitTests.ConsoleDrivers.V2;
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public class ApplicationV2Tests
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{
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private ApplicationV2 NewApplicationV2 ()
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{
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var netInput = new Mock<INetInput> ();

‎Tests/UnitTests/FluentTests/BasicFluentAssertionTests.cs

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using TerminalGuiFluentAssertions;
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namespace UnitTests.FluentTests;
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public class BasicFluentAssertionTests
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{
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[Fact]
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public void GuiTestContext_StartsAndStopsWithoutError ()
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{
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var context = With.A<Window> (40, 10);
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// No actual assertions are needed — if no exceptions are thrown, it's working
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context.Stop ();
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}
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[Fact]
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public void Test ()
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{
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var myView = new TextField () { Width = 10 };
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/*
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using var ctx = With.A<Window> (20, 10)
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.Add (myView, 3, 2)
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.Focus (myView)
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.Type ("Hello");
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Assert.Equal ("Hello", myView.Text);*/
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}
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}

‎Tests/UnitTests/UnitTests.csproj

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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\..\Terminal.Gui\Terminal.Gui.csproj" />
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<ProjectReference Include="..\..\TerminalGuiFluentAssertions\TerminalGuiFluentAssertions.csproj" />
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<ProjectReference Include="..\..\UICatalog\UICatalog.csproj" />
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</ItemGroup>
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<ItemGroup>

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