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- import negateValue from '../src/util/negateValue'
- test('it negates numeric CSS values', () => {
- expect(negateValue('5')).toEqual('-5')
- expect(negateValue('10px')).toEqual('-10px')
- expect(negateValue('18rem')).toEqual('-18rem')
- expect(negateValue('-10')).toEqual('10')
- expect(negateValue('-7ch')).toEqual('7ch')
- })
- test('values that cannot be negated become undefined', () => {
- expect(negateValue('auto')).toBeUndefined()
- expect(negateValue('cover')).toBeUndefined()
- })
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