jdescopingtool/NEW/tests/Utils/JdeScoping.ConfigManager.Ui.Tests/ViewModels/Forms/AuthFormViewModelTests.cs

using JdeScoping.ConfigManager.Core.Models;
using JdeScoping.ConfigManager.Ui.ViewModels.Forms;

namespace JdeScoping.ConfigManager.Ui.Tests.ViewModels.Forms;

public class AuthFormViewModelTests
{
    [Fact]
    public void Constructor_InitializesFromModel()
    {
        // Arrange
        var model = new AuthSection
        {
            CookieName = ".TestApp.Auth",
            CookieExpirationMinutes = 120
        };

        // Act
        var sut = new AuthFormViewModel(model, () => { });

        // Assert
        sut.CookieName.ShouldBe(".TestApp.Auth");
        sut.CookieExpirationMinutes.ShouldBe(120);
    }

    [Fact]
    public void PropertyChange_UpdatesModelAndInvokesOnChanged()
    {
        // Arrange
        var model = new AuthSection();
        var changedInvoked = false;
        var sut = new AuthFormViewModel(model, () => changedInvoked = true);

        // Act
        sut.CookieName = ".Custom.Cookie";

        // Assert
        model.CookieName.ShouldBe(".Custom.Cookie");
        changedInvoked.ShouldBeTrue();
    }

    [Fact]
    public void CookieExpirationMinutes_UpdatesModelAndInvokesOnChanged()
    {
        // Arrange
        var model = new AuthSection { CookieExpirationMinutes = 480 };
        var changedInvoked = false;
        var sut = new AuthFormViewModel(model, () => changedInvoked = true);

        // Act
        sut.CookieExpirationMinutes = 60;

        // Assert
        model.CookieExpirationMinutes.ShouldBe(60);
        changedInvoked.ShouldBeTrue();
    }

    [Fact]
    public void PropertyChange_RaisesPropertyChanged()
    {
        // Arrange
        var model = new AuthSection();
        var sut = new AuthFormViewModel(model, () => { });
        var propertyChangedRaised = false;
        sut.PropertyChanged += (s, e) =>
        {
            if (e.PropertyName == nameof(AuthFormViewModel.CookieName))
                propertyChangedRaised = true;
        };

        // Act
        sut.CookieName = ".New.Cookie";

        // Assert
        propertyChangedRaised.ShouldBeTrue();
    }

    [Fact]
    public void Constructor_ThrowsOnNullModel()
    {
        // Act & Assert
        Should.Throw<ArgumentNullException>(() => new AuthFormViewModel(null!, () => { }));
    }

    [Fact]
    public void Constructor_ThrowsOnNullCallback()
    {
        // Act & Assert
        Should.Throw<ArgumentNullException>(() => new AuthFormViewModel(new AuthSection(), null!));
    }
}