metamask-extension/test/unit/responsive/components/dropdown-test.js

const React = require('react')
const assert = require('assert')

const sinon = require('sinon')
const path = require('path')
const Dropdown = require(path.join(__dirname, '..', '..', '..', '..', 'ui', 'app', 'components', 'app', 'dropdowns', 'index.js')).Dropdown

const { createMockStore } = require('redux-test-utils')
const { mountWithStore } = require('../../../lib/render-helpers')

const mockState = {
  metamask: {
  },
}

describe('Dropdown components', function () {
  let onClickOutside
  let closeMenu
  let onClick

  const dropdownComponentProps = {
    isOpen: true,
    zIndex: 11,
    onClickOutside,
    style: {
      position: 'absolute',
      right: 0,
      top: '36px',
    },
    innerStyle: {},
  }

  let dropdownComponent
  let store
  let component
  beforeEach(function () {
    onClickOutside = sinon.spy()
    closeMenu = sinon.spy()
    onClick = sinon.spy()

    store = createMockStore(mockState)
    component = mountWithStore((
      <Dropdown {...dropdownComponentProps}>
        <style>
          {
            `
              .drop-menu-item:hover { background:rgb(235, 235, 235); }
              .drop-menu-item i { margin: 11px; }
            `
          }
        </style>
        <li closeMenu={closeMenu} onClick={onClick}>Item 1</li>
        <li closeMenu={closeMenu} onClick={onClick}>Item 2</li>
      </Dropdown>
    ), store)
    dropdownComponent = component
  })

  it('can render two items', function () {
    const items = dropdownComponent.find('li')
    assert.equal(items.length, 2)
  })

  it('closes when item clicked', function () {
    const items = dropdownComponent.find('li')
    const node = items.at(0)
    node.simulate('click')
    assert.equal(node.props().closeMenu, closeMenu)
  })

  it('invokes click handler when item clicked', function () {
    const items = dropdownComponent.find('li')
    const node = items.at(0)
    node.simulate('click')
    assert.equal(onClick.calledOnce, true)
  })
})