bootstrap-vue/src/utils/copy-props.spec.js

BootstrapVue, with over 40 plugins and more than 80 custom components, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

import copyProps from './copy-props'

describe('utils/copyProps', () => {
  it('works with array props', async () => {
    const props = ['a', 'b', 'c']

    expect(copyProps(props)).toEqual(props)
    // Should be a new array reference
    expect(copyProps(props)).not.toBe(props)
  })

  it('works with object props', async () => {
    const props = {
      a: { type: String, default: 'foobar' },
      b: { type: [Object, Array], default: null },
      c: 'c'
    }

    expect(copyProps(props)).toEqual(props)
    // Should be a new object reference
    expect(copyProps(props)).not.toBe(props)
    // Properties should be new object references
    expect(copyProps(props).a).not.toBe(props.a)
    expect(copyProps(props).a).toEqual(props.a)
    expect(copyProps(props).b).not.toBe(props.b)
    expect(copyProps(props).b).toEqual(props.b)
    // Except for primatives
    expect(copyProps(props).c).toBe(props.c)
    expect(copyProps(props).c).toEqual(props.c)
  })
})