@use 'true' as *;
@use '../src/functions';

@include describe('functions') {
    @include it('str-replace') {
        $str: 'Hello world!';

        @include assert-equal(functions.str-replace($str, 'world', 'neighbor'), 'Hello neighbor!', 'Replace "world" with "neighbor"');
        @include assert-equal(functions.str-replace($str, 'neighbor', 'moon'),  'Hello world!',    'Replace "neighbor" with "moon"');
        @include assert-equal(functions.str-replace($str, 'Hello', 'Bye'),      'Bye world!',      'Replace "Hello" with "Bye"');
    }

    @include it('list-slice') {
        $list: 'this' 'is' 'a' 'list';

        @include assert-equal(functions.list-slice($list, 2),      'is' 'a' 'list',  'Discard first item');
        @include assert-equal(functions.list-slice($list, 1, 3),   'this' 'is' 'a',  'Keep first 3 items');
        @include assert-equal(functions.list-slice($list, 2, 3),   'is' 'a',         'Extract list from index 2 to 3');
        @include assert-equal(functions.list-slice($list, -1, -1), join((), 'list'), 'Keep last item');
        @include assert-equal(functions.list-slice($list, -1, 1),  'list' 'this',    'Extract first and last item');
    }

    @include it('list-prepend') {
        $list: 'this' 'is' 'a' 'list';

        @include assert-equal(functions.list-prepend($list, 'and'), 'and' 'this' 'is' 'a' 'list', 'Prepend "and"');
        @include assert-equal(functions.list-prepend($list, 2),     2 'this' 'is' 'a' 'list',     'Prepend 2');
    }

    @include it('quicksort') {
        @include assert-equal(functions.quicksort(1 2 3 4 5),     1 2 3 4 5,     'Already sorted list of 5 items');
        @include assert-equal(functions.quicksort(1 3 2),         1 2 3,         'Random list of 3 items');
        @include assert-equal(functions.quicksort(6 3 7 3 8 1 4), 1 3 3 4 6 7 8, 'Random list of 7 items, one duplicate');
        @include assert-equal(functions.quicksort(1 1 1 1),       1 1 1 1,       'List of 4 identical items');
    }

    @include it('map-get-default') {
        $map: ('key': 'value', 'another': 'item');

        @include assert-equal(functions.map-get-default($map, 'another', 0),         map-get($map, 'another'), 'Get existing value');
        @include assert-equal(functions.map-get-default($map, 'index',   'nothing'), 'nothing',                'Get missing value');
    }

    @include it('strip-unit') {
        @include assert-true(unitless(functions.strip-unit(1em)),  'Remove unit from 1em');
        @include assert-true(unitless(functions.strip-unit(2rem)), 'Remove unit from 2rem');
        @include assert-true(unitless(functions.strip-unit(3px)),  'Remove unit from 3px');
        @include assert-true(unitless(functions.strip-unit(4)),    'Remove unit from 4');
        @include assert-true(unitless(functions.strip-unit(5pt)),  'Remove unit from 5pt');
    }

    @include it('px-to-rem') {
        @include assert-equal(functions.px-to-rem(16px, 16px), 1rem,   'Convert 16px');
        @include assert-equal(functions.px-to-rem(32px, 16px), 2rem,   'Convert 16px');
        @include assert-equal(functions.px-to-rem(8px, 16px),  0.5rem, 'Convert 16px');
    }
}