free-code-dotnet/tests/FreeCode.Tests.Integration/PluginLoadingTests.cs

using FluentAssertions;
using FreeCode.Plugins;
using Xunit;

namespace FreeCode.Tests.Integration;

public sealed class PluginLoadingTests
{
    [Fact]
    public async Task LoadPluginsAsync_NoPluginDir_NoThrow()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        var act = () => sut.LoadPluginsAsync();

        await act.Should().NotThrowAsync();
        sut.GetLoadedPlugins().Should().BeEmpty();
    }

    [Fact]
    public void GetLoadedPlugins_InitiallyEmpty()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        sut.GetLoadedPlugins().Should().BeEmpty();
    }

    [Fact]
    public void GetLoadedPluginDetails_InitiallyEmpty()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        sut.GetLoadedPluginDetails().Should().BeEmpty();
    }

    [Fact]
    public async Task UnloadPluginAsync_UnknownId_NoThrow()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        var act = () => sut.UnloadPluginAsync("missing-plugin");

        await act.Should().NotThrowAsync();
    }

    [Fact]
    public async Task EnablePluginAsync_UnknownId_NoThrow()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        var act = () => sut.EnablePluginAsync("missing-plugin");

        await act.Should().NotThrowAsync();
    }

    [Fact]
    public async Task DisablePluginAsync_UnknownId_NoThrow()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        var act = () => sut.DisablePluginAsync("missing-plugin");

        await act.Should().NotThrowAsync();
    }

    [Fact]
    public void GetPluginCommands_InitiallyEmpty()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        sut.GetPluginCommands().Should().BeEmpty();
    }

    [Fact]
    public async Task InstallPluginAsync_InvalidSource_Throws()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();
        var missingPath = Path.Combine(Path.GetTempPath(), "free-code-plugin-missing-" + Guid.NewGuid().ToString("N"));

        var act = () => sut.InstallPluginAsync(missingPath);

        await act.Should().ThrowAsync<DirectoryNotFoundException>();
    }

    [Fact]
    public async Task InstallPluginAsync_EmptySource_ThrowsArgumentException()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        var act = () => sut.InstallPluginAsync(string.Empty);

        await act.Should().ThrowAsync<ArgumentException>();
    }

    [Fact]
    public async Task RefreshAsync_CompletesWithoutError()
    {
        using var testHome = new TestHomeDirectoryScope();
        var sut = new PluginManager();

        var act = () => sut.RefreshAsync();

        await act.Should().NotThrowAsync();
    }
}