object.spec.js
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import { pick, omit, mergeDeep } from './object'
describe('utils/object', () => {
it('pick() works', async () => {
const obj = { a: 1, b: 2, c: 3, d: null, e: [] }
expect(pick(obj, ['a', 'b', 'c'])).toEqual({ a: 1, b: 2, c: 3 })
expect(pick(obj, Object.keys(obj))).toEqual(obj)
expect(pick(obj, [])).toEqual({})
})
it('omit() works', async () => {
const obj = { a: 1, b: 2, c: 3, d: null, e: [] }
expect(omit(obj, ['a', 'b', 'c'])).toEqual({ d: null, e: [] })
expect(omit(obj, Object.keys(obj))).toEqual({})
expect(omit(obj, [])).toEqual(obj)
})
it('mergeDeep() works', async () => {
const A = {
a: {
loc: 'Earth',
title: 'Hello World',
type: 'Planet',
deeper: {
map: new Map([['a', 'AAA'], ['b', 'BBB']]),
mapId: 15473
}
}
}
const B = {
a: {
type: 'Star',
deeper: {
mapId: 9999,
alt_map: new Map([['x', 'XXXX'], ['y', 'YYYY']])
}
}
}
const C = mergeDeep(A, B)
const D = mergeDeep({ a: 1 }, { b: { c: { d: { e: 12345 } } } })
const E = mergeDeep({ b: { c: 'hallo' } }, { b: { c: { d: { e: 12345 } } } })
const F = mergeDeep(
{ b: { c: { d: { e: 12345 } }, d: 'dag', f: 'one' } },
{ b: { c: 'hallo', e: 'ok', f: 'two' } }
)
expect(C.a.type).toEqual('Star')
expect(C.a.deeper.alt_map.get('x')).toEqual('XXXX')
expect(C.a.deeper.map.get('b')).toEqual('BBB')
expect(D.a).toEqual(1)
expect(D.b.c.d.e).toEqual(12345)
expect(E.b.c.d.e).toEqual(12345)
expect(F.b.c).toEqual('hallo')
expect(F.b.d).toEqual('dag')
expect(F.b.e).toEqual('ok')
expect(F.b.f).toEqual('two')
})
})