scadaproj/ZB.MOM.WW.Theme/tests/ZB.MOM.WW.Theme.Tests/TechButtonExtensionsTests.cs

namespace ZB.MOM.WW.Theme.Tests;

public sealed class TechButtonExtensionsTests : BunitContext
{
    [Theory]
    [InlineData(ButtonSize.Default, null)]
    [InlineData(ButtonSize.Small, "btn-sm")]
    [InlineData(ButtonSize.Large, "btn-lg")]
    public void Size_preserves_variant_and_composes_both_class_inputs(ButtonSize size, string? expected)
    {
        var cut = Render<TechButton>(p => p
            .Add(x => x.Variant, ButtonVariant.Secondary)
            .Add(x => x.Size, size)
            .Add(x => x.Class, "explicit-action")
            .Add(x => x.AdditionalAttributes, new Dictionary<string, object>
            {
                ["class"] = "caller-action", ["aria-label"] = "Save changes"
            })
            .AddChildContent("Save"));

        var button = cut.Find("button");
        foreach (var cls in new[] { "btn", "btn-outline-secondary", "explicit-action", "caller-action" })
            Assert.Contains(cls, button.ClassList);
        Assert.Equal("Save changes", button.GetAttribute("aria-label"));
        if (expected is not null) Assert.Contains(expected, button.ClassList);
        else
        {
            Assert.DoesNotContain("btn-sm", button.ClassList);
            Assert.DoesNotContain("btn-lg", button.ClassList);
        }
    }

    [Fact]
    public void Class_composition_keeps_busy_type_and_click_behavior()
    {
        var clicks = 0;
        var attributes = new Dictionary<string, object>
        {
            ["class"] = "caller", ["disabled"] = false,
            ["onclick"] = EventCallback.Factory.Create(this, () => clicks++)
        };
        var cut = Render<TechButton>(p => p
            .Add(x => x.Class, "extra")
            .Add(x => x.Type, "submit")
            .Add(x => x.Busy, true)
            .Add(x => x.AdditionalAttributes, attributes)
            .AddChildContent("Save"));

        Assert.True(cut.Find("button").HasAttribute("disabled"));
        Assert.Equal("submit", cut.Find("button").GetAttribute("type"));
        Assert.NotNull(cut.Find(".spinner-border"));
        Assert.Equal("caller", attributes["class"]);
        cut.Render(p => p.Add(x => x.Busy, false));
        cut.Find("button").Click();
        Assert.Equal(1, clicks);
        Assert.DoesNotContain(cut.FindAll("span"), x => x.ClassList.Contains("spinner-border"));
    }

    [Theory]
    [InlineData(true)]
    [InlineData("disabled")]
    [InlineData("")]
    public void Caller_disabled_is_honoured_when_not_busy(object disabled)
    {
        // Theme-007 (scadaproj#44): the trailing disabled="@Busy" overwrote the splatted value, so
        // a caller's disabled was silently dropped whenever Busy was false.
        var cut = Render<TechButton>(p => p
            .AddUnmatched("disabled", disabled)
            .AddChildContent("Delete"));

        var button = cut.Find("button");
        Assert.True(button.HasAttribute("disabled"));
        Assert.Empty(cut.FindAll(".spinner-border"));
    }

    [Fact]
    public void Caller_disabled_false_leaves_the_button_enabled()
    {
        var cut = Render<TechButton>(p => p.AddUnmatched("disabled", false).AddChildContent("Go"));

        Assert.False(cut.Find("button").HasAttribute("disabled"));
    }

    [Fact]
    public void Caller_disabled_toggles_off_on_rerender()
    {
        var cut = Render<TechButton>(p => p.AddUnmatched("disabled", true).AddChildContent("Go"));
        Assert.True(cut.Find("button").HasAttribute("disabled"));

        cut.Render(p => p.AddUnmatched("disabled", false));

        Assert.False(cut.Find("button").HasAttribute("disabled"));
    }

    [Fact]
    public void Lowercase_class_attribute_preserves_required_button_classes()
    {
        var cut = Render<TechButton>(p => p.AddUnmatched("class", "caller").AddChildContent("Go"));
        foreach (var cls in new[] { "btn", "btn-primary", "caller" })
            Assert.Contains(cls, cut.Find("button").ClassList);
    }
}