tailwind_fuse 0.3.2

Tailwind Merge and Variants
Documentation 
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use tailwind_fuse::merge::tw_merge;
use tailwind_fuse::tw_merge;

#[test]
fn test_tw_merge_border_width_color() {
    let all_sides = tw_merge!("border-2", "border-blue-500");
    assert_eq!(all_sides, "border-2 border-blue-500");

    let arbitrary = tw_merge!("border-[100px]", "border-blue-500");
    assert_eq!(arbitrary, "border-[100px] border-blue-500");
}

#[test]
fn test_tw_merge_mixed_blend() {
    let classes = tw_merge!("mix-blend-normal", "mix-blend-multiply");
    assert_eq!(classes, "mix-blend-multiply");
}

#[test]
fn test_tw_merge_height() {
    let classes = tw_merge!("h-10", "h-min");
    assert_eq!(classes, "h-min");
}

#[test]
fn test_tw_merge_stroke() {
    let classes = tw_merge!("stroke-black", "stroke-1");
    assert_eq!(classes, "stroke-black stroke-1");

    let classes = tw_merge!("stroke-2", "stroke-[3px]");
    assert_eq!(classes, "stroke-[3px]");

    let classes = tw_merge!("stroke-black", "stroke-red-500", "stroke-blue-100");
    assert_eq!(classes, "stroke-blue-100");
}

#[test]
fn test_tw_merge_outline() {
    let classes = tw_merge!("outline-black", "outline-1");
    assert_eq!(classes, "outline-black outline-1");
}

#[test]
fn test_tw_merge_grayscale() {
    let classes = tw_merge!("grayscale-0", "grayscale-[50%]");
    assert_eq!(classes, "grayscale-[50%]");
}

#[test]
fn test_padding_narrowing() {
    let classes = tw_merge!("p-10", "px-5");
    assert_eq!(classes, "p-10 px-5");
    let classes = tw_merge!("px-5", "py-5", "p-10",);
    assert_eq!(classes, "p-10");
}

#[test]
fn test_gap_narrowing() {
    let classes = tw_merge!("gap-10", "gap-x-5");
    assert_eq!(classes, "gap-10 gap-x-5");

    let classes = tw_merge!("gap-x-5", "gap-y-5", "gap-10");
    assert_eq!(classes, "gap-10");
}

#[test]
fn merges_classes_from_same_group_correctly() {
    let class = "overflow-x-auto overflow-x-hidden";
    let result = tw_merge(class);
    assert_eq!(result, "overflow-x-hidden");

    let class = "basis-full basis-auto";
    let result = tw_merge(class);
    assert_eq!(result, "basis-auto");

    let class = "w-full w-fit";
    let result = tw_merge(class);
    assert_eq!(result, "w-fit");

    let class = "overflow-x-auto overflow-x-hidden overflow-x-scroll";
    let result = tw_merge(class);
    assert_eq!(result, "overflow-x-scroll");

    let class = "overflow-x-auto hover:overflow-x-hidden overflow-x-scroll";
    let result = tw_merge(class);
    assert_eq!(result, "hover:overflow-x-hidden overflow-x-scroll");

    let class = "overflow-x-auto hover:overflow-x-hidden hover:overflow-x-auto overflow-x-scroll";
    let result = tw_merge(class);
    assert_eq!(result, "hover:overflow-x-auto overflow-x-scroll");

    let class = "col-span-1 col-span-full";
    let result = tw_merge(class);
    assert_eq!(result, "col-span-full");
}

#[test]
fn merges_classes_from_font_variant_numeric_section_correctly() {
    let class = "lining-nums tabular-nums diagonal-fractions";
    let result = tw_merge(class);
    assert_eq!(result, "lining-nums tabular-nums diagonal-fractions");

    let class = "normal-nums tabular-nums diagonal-fractions";
    let result = tw_merge(class);
    assert_eq!(result, "tabular-nums diagonal-fractions");

    let class = "tabular-nums diagonal-fractions normal-nums";
    let result = tw_merge(class);
    assert_eq!(result, "normal-nums");

    let class = "tabular-nums proportional-nums";
    let result = tw_merge(class);
    assert_eq!(result, "proportional-nums");
}

#[test]
fn handles_color_conflicts_properly() {
    let class = "bg-grey-5 bg-hotpink";
    let result = tw_merge(class);
    assert_eq!(result, "bg-hotpink");

    let class = "hover:bg-grey-5 hover:bg-hotpink";
    let result = tw_merge(class);
    assert_eq!(result, "hover:bg-hotpink");

    let class = "stroke-[hsl(350_80%_0%)] stroke-[10px]";
    let result = tw_merge(class);
    assert_eq!(result, "stroke-[hsl(350_80%_0%)] stroke-[10px]");
}

#[test]
fn handles_conflicts_across_class_groups_correctly() {
    assert_eq!(tw_merge("inset-1 inset-x-1"), "inset-1 inset-x-1");
    assert_eq!(tw_merge("inset-x-1 inset-1"), "inset-1");
    assert_eq!(tw_merge("inset-x-1 left-1 inset-1"), "inset-1");
    assert_eq!(tw_merge("inset-x-1 inset-1 left-1"), "inset-1 left-1");
    assert_eq!(tw_merge("inset-x-1 right-1 inset-1"), "inset-1");
    assert_eq!(tw_merge("inset-x-1 right-1 inset-x-1"), "inset-x-1");
    assert_eq!(
        tw_merge("inset-x-1 right-1 inset-y-1"),
        "inset-x-1 right-1 inset-y-1"
    );
    assert_eq!(
        tw_merge("right-1 inset-x-1 inset-y-1"),
        "inset-x-1 inset-y-1"
    );
    assert_eq!(
        tw_merge("inset-x-1 hover:left-1 inset-1"),
        "hover:left-1 inset-1"
    );
}

#[test]
fn ring_and_shadow_classes_do_not_create_conflict() {
    assert_eq!(tw_merge("ring shadow"), "ring shadow");
    assert_eq!(tw_merge("ring-2 shadow-md"), "ring-2 shadow-md");
    assert_eq!(tw_merge("shadow ring"), "shadow ring");
    assert_eq!(tw_merge("shadow-md ring-2"), "shadow-md ring-2");
}

#[test]
fn touch_classes_do_create_conflicts_correctly() {
    assert_eq!(tw_merge("touch-pan-x touch-pan-right"), "touch-pan-right");
    assert_eq!(tw_merge("touch-none touch-pan-x"), "touch-pan-x");
    assert_eq!(tw_merge("touch-pan-x touch-none"), "touch-none");
    assert_eq!(
        tw_merge("touch-pan-x touch-pan-y touch-pinch-zoom"),
        "touch-pan-x touch-pan-y touch-pinch-zoom"
    );
    assert_eq!(
        tw_merge("touch-manipulation touch-pan-x touch-pan-y touch-pinch-zoom"),
        "touch-pan-x touch-pan-y touch-pinch-zoom"
    );
    assert_eq!(
        tw_merge("touch-pan-x touch-pan-y touch-pinch-zoom touch-auto"),
        "touch-auto"
    );
}

#[test]
fn line_clamp_classes_do_create_conflicts_correctly() {
    assert_eq!(
        tw_merge("overflow-auto inline line-clamp-1"),
        "line-clamp-1"
    );
    assert_eq!(
        tw_merge("line-clamp-1 overflow-auto inline"),
        "line-clamp-1 overflow-auto inline"
    );
}

#[test]
fn test_line_height_font_size() {
    assert_eq!(tw_merge("leading-9 text-lg"), "text-lg");
}

#[test]
fn text_color_font_size() {
    assert_eq!(tw_merge("text-red-500 text-lg"), "text-red-500 text-lg");

    // https://tailwindcss.com/docs/font-size#setting-the-line-height
    assert_eq!(
        tw_merge("text-red-500/10 text-lg/9"),
        "text-red-500/10 text-lg/9"
    );
}

#[test]
fn stroke_width() {
    assert_eq!(tw_merge("stroke-2 stroke-[3]"), "stroke-[3]");
}

#[test]
fn handles_negative_value_conflicts_correctly() {
    assert_eq!(tw_merge("-top-12 -top-2000"), "-top-2000");
}

#[test]
fn tailwind_3_4() {
    assert_eq!(tw_merge("text-red text-lg/8"), "text-red text-lg/8");
}

#[test]
fn test_group_data_important_modifiers() {
    let classes = tw_merge!("group-data-[collapsible=icon]:!p-2", "group-data-[collapsible=icon]:!p-0");
    assert_eq!(classes, "group-data-[collapsible=icon]:!p-0");

    let classes = tw_merge!(
        "group-data-[collapsible=icon]:!size-8",
        "group-data-[collapsible=icon]:!p-2",
        "group-data-[collapsible=icon]:!p-0"
    );
    assert_eq!(classes, "group-data-[collapsible=icon]:!size-8 group-data-[collapsible=icon]:!p-0");

    let classes = tw_merge!(
        "group-data-[collapsible=icon]:!p-2",
        "group-data-[collapsible=icon]:!size-8",
        "group-data-[collapsible=icon]:!p-0"
    );
    assert_eq!(classes, "group-data-[collapsible=icon]:!size-8 group-data-[collapsible=icon]:!p-0");
}