@include test-module('_pad') {
  @include test('should pad a string to a given length') {
    @include assert-equal(_pad('abc', 9), '   abc   ');
  }

  @include test('should truncate pad characters to fit the pad length') {
    @include assert-equal(_pad('abc', 8), '  abc   ');
  }

  @include test('should truncate pad characters to fit the pad length') {
    @include assert-equal(_pad('abc', 8, '_-'), '_-abc_-_');
  }

  @include test('should coerce to a string') {
    @include assert-equal(_pad(123, 9), '   123   ');
  }
}

@include test-module('_pad-left') {
  @include test('should pad a string to a given length') {
    @include assert-equal(_pad-left('abc', 9), '      abc');
  }

  @include test('should truncate pad characters to fit the pad length') {
    @include assert-equal(_pad-left('abc', 6, '_-'), '_-_abc');
  }

  @include test('should coerce to a string') {
    @include assert-equal(_pad-left(123, 4), ' 123');
  }
}

@include test-module('_pad-right') {
  @include test('should pad a string to a given length') {
    @include assert-equal(_pad-right('abc', 9), 'abc      ');
  }

  @include test('should truncate pad characters to fit the pad length') {
    @include assert-equal(_pad-right('abc', 6, '_-'), 'abc_-_');
  }

  @include test('should coerce to a string') {
    @include assert-equal(_pad-right(123, 4), '123 ');
  }
}

@include test-module('_pad methods') {
  @each $method-name in 'pad', 'pad-left', 'pad-right' {
    $func: unquote('_#{$method-name}');
    $is-pad-left: $method-name == 'pad-left';

    @include test('should not pad if string is >= length') {
      @include assert-equal(_call($func, null, 'abc', 2), 'abc');
    }

    @include test('should not pad if string is >= length') {
      @include assert-equal(_call($func, null, 'abc', 3), 'abc');
    }

    @include test('should treat negative length as 0') {
      @include assert-equal(_call($func, null, 'abc', 0), 'abc');
    }

    @include test('should treat negative length as 0') {
      @include assert-equal(_call($func, null, 'abc', -3), 'abc');
    }

    @include test('should return an empty string when provided null or empty string and chars') {
      @include assert-equal(_call($func, null, null, 0, null), '');
    }

    @include test('should return an empty string when provided null or empty string and chars') {
      @include assert-equal(_call($func, null, null, 0, '_-'), '');
    }

    @include test('should return an empty string when provided null or empty string and chars') {
      @include assert-equal(_call($func, null, '', 0, null), '');
    }

    @include test('should return an empty string when provided null or empty string and chars') {
      @include assert-equal(_call($func, null, '', 0, '_-'), '');
    }

    @include test('should work with null or empty string for chars') {
      @include assert-equal(_call($func, null, 'abc', 6, null), 'abc');
    }

    @include test('should work with null or empty string for chars') {
      @include assert-equal(_call($func, null, 'abc', 6, ''), 'abc');
    }
  }
}