Skip to main content
Module

x/rambda/dropLast.spec.js

Faster and smaller alternative to Ramda
Go to Latest
File
import assert from 'assert'
import { dropLast } from './dropLast'
test('with array', () => { expect(dropLast(2)([ 'foo', 'bar', 'baz' ])).toEqual([ 'foo' ]) expect(dropLast(3, [ 'foo', 'bar', 'baz' ])).toEqual([]) expect(dropLast(4, [ 'foo', 'bar', 'baz' ])).toEqual([])})
test('with string', () => { expect(dropLast(3, 'rambda')).toEqual('ram')})
test('with non-positive count', () => { expect(dropLast(0, [ 1, 2, 3 ])).toEqual([ 1, 2, 3 ]) expect(dropLast(-1, [ 1, 2, 3 ])).toEqual([ 1, 2, 3 ]) expect(dropLast(-Infinity, [ 1, 2, 3 ])).toEqual([ 1, 2, 3 ])})
test('should return copy', () => { const xs = [ 1, 2, 3 ]
assert.notStrictEqual(dropLast(0, xs), xs) assert.notStrictEqual(dropLast(-1, xs), xs)})