tabler/core/scss/tests/_rfs.test.scss

// Tests for the RFS (responsive font sizing) helper functions in
// scss/mixins/bootstrap/_rfs.scss. Both build their result via string
// concatenation, so they return unquoted strings (compared as strings here).
//
// `rfs-value` gives the static value (px normalised to rem); `rfs-fluid-value`
// gives the fluid value — unchanged below the base size, a responsive `calc()`
// above it.

@use '../mixins/bootstrap/rfs' as *;

@include describe('rfs-value') {
  @include it('passes rem values through and keeps 0') {
    @include assert-equal(rfs-value(2rem), '2rem');
    @include assert-equal(rfs-value(0), '0');
  }

  @include it('normalises px to rem') {
    @include assert-equal(rfs-value(20px), '1.25rem');
  }
}

@include describe('rfs-fluid-value') {
  @include it('leaves values at or below the base size unchanged') {
    @include assert-equal(rfs-fluid-value(1rem), '1rem');
  }

  @include it('produces a responsive calc() above the base size') {
    @include assert-equal(rfs-fluid-value(3rem), 'calc(1.425rem + 2.1vw)');
  }
}