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x/rambda/lensSatisfies.spec.js

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import { lensIndex } from './lensIndex'import { lensPath } from './lensPath'import { lensSatisfies } from './lensSatisfies'
const predicate = x => x > 1
test('with list', () => { const lens = lensIndex(0) const fn = lensSatisfies(predicate, lens) expect(fn([ 10, 20, 30 ])).toBeTrue() expect(fn([ 1, 2, 3 ])).toBeFalse()})
test('with R.lensPath', () => { const input1 = { a : { b : 10 } } const input2 = { a : { b : 1 } } const lens = lensPath('a.b') const fn = lensSatisfies(predicate, lens)
expect(fn(input1)).toBeTrue() expect(fn(input2)).toBeFalse()})