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import React from 'react'
import ReactDOM from 'react-dom'
import renderer from 'react-test-renderer'
import Splitter from '../../../components/common/Splitter'
import TestUtils from 'react-dom/test-utils';
describe('Splitter Component', () => {
it('should render correctly', () => {
let splitter = renderer.create(<Splitter></Splitter>),
tree = splitter.toJSON()
expect(tree).toMatchSnapshot()
})
let splitter = TestUtils.renderIntoDocument(<Splitter></Splitter>),
dom = ReactDOM.findDOMNode(splitter),
previousElementSibling = {
offsetHeight: 0,
offsetWidth: 0,
style: {flex: ''}
},
nextElementSibling = {
style: {flex: ''}
}
it('should handle mouseDown ', () => {
window.addEventListener = jest.fn()
splitter.onMouseDown({ pageX: 1, pageY: 2})
expect(splitter.state.startX).toEqual(1)
expect(splitter.state.startY).toEqual(2)
expect(window.addEventListener).toBeCalledWith('mousemove', splitter.onMouseMove)
expect(window.addEventListener).toBeCalledWith('mouseup', splitter.onMouseUp)
expect(window.addEventListener).toBeCalledWith('dragend', splitter.onDragEnd)
})
it('should handle dragEnd', () => {
window.removeEventListener = jest.fn()
splitter.onDragEnd()
expect(dom.style.transform).toEqual('')
expect(window.removeEventListener).toBeCalledWith('dragend', splitter.onDragEnd)
expect(window.removeEventListener).toBeCalledWith('mouseup', splitter.onMouseUp)
expect(window.removeEventListener).toBeCalledWith('mousemove', splitter.onMouseMove)
})
it('should handle mouseUp', () => {
Object.defineProperty(dom, 'previousElementSibling', { value: previousElementSibling })
Object.defineProperty(dom, 'nextElementSibling', { value: nextElementSibling })
splitter.onMouseUp({ pageX: 3, pageY: 4 })
expect(splitter.state.applied).toBeTruthy()
expect(nextElementSibling.style.flex).toEqual('1 1 auto')
expect(previousElementSibling.style.flex).toEqual('0 0 2px')
})
it('should handle mouseMove', () => {
splitter.onMouseMove({pageX: 10, pageY: 10})
expect(dom.style.transform).toEqual("translate(9px, 0px)")
let splitterY = TestUtils.renderIntoDocument(<Splitter axis="y"></Splitter>)
splitterY.onMouseMove({pageX: 10, pageY: 10})
expect(ReactDOM.findDOMNode(splitterY).style.transform).toEqual("translate(0px, 10px)")
})
it('should handle resize', () => {
window.setTimeout = jest.fn((event, time) => event())
splitter.onResize()
expect(window.setTimeout).toHaveBeenCalled()
})
it('should handle componentWillUnmount', () => {
splitter.componentWillUnmount()
expect(previousElementSibling.style.flex).toEqual('')
expect(nextElementSibling.style.flex).toEqual('')
expect(splitter.state.applied).toBeTruthy()
})
it('should handle reset', () => {
splitter.reset(false)
expect(splitter.state.applied).toBeFalsy()
expect(splitter.reset(true)).toEqual(undefined)
})
})
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