/
Transition-test.js
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Transition-test.js
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import React from 'react'
import ReactDOM from 'react-dom'
import { mount } from 'enzyme'
import sinon from 'sinon'
import Transition, {
UNMOUNTED,
EXITED,
ENTERING,
ENTERED,
EXITING,
} from '../src/Transition'
jasmine.addMatchers({
toExist: () => ({
compare: actual => ({
pass: actual != null,
}),
}),
})
describe('Transition', () => {
it('should not transition on mount', () => {
let wrapper = mount(
<Transition
in
timeout={0}
onEnter={() => {
throw new Error('should not Enter')
}}
>
<div />
</Transition>
)
expect(wrapper.state('status')).toEqual(ENTERED)
})
it('should transition on mount with `appear`', done => {
mount(
<Transition
in
timeout={0}
onEnter={() => {
throw Error('Animated!')
}}
>
<div />
</Transition>
)
mount(
<Transition in appear timeout={0} onEnter={() => done()}>
<div />
</Transition>
)
})
it('should pass filtered props to children', () => {
class Child extends React.Component {
render() {
return <div>child</div>
}
}
const child = mount(
<Transition
foo="foo"
bar="bar"
in
mountOnEnter
unmountOnExit
appear
enter
exit
timeout={0}
addEndListener={() => {}}
onEnter={() => {}}
onEntering={() => {}}
onEntered={() => {}}
onExit={() => {}}
onExiting={() => {}}
onExited={() => {}}
>
<Child />
</Transition>
).find(Child)
expect(child.props()).toEqual({ foo: 'foo', bar: 'bar' })
})
it('should allow addEndListener instead of timeouts', done => {
let listener = sinon.spy((node, end) => setTimeout(end, 0))
let inst = mount(
<Transition
addEndListener={listener}
onEntered={() => {
expect(listener.callCount).toEqual(1)
done()
}}
>
<div />
</Transition>
)
inst.setProps({ in: true })
})
it('should fallback to timeouts with addEndListener', done => {
let calledEnd = false
let listener = (node, end) =>
setTimeout(() => {
calledEnd = true
end()
}, 100)
let inst = mount(
<Transition
timeout={0}
addEndListener={listener}
onEntered={() => {
expect(calledEnd).toEqual(false)
done()
}}
>
<div />
</Transition>
)
inst.setProps({ in: true })
})
describe('appearing timeout', () => {
it('should use enter timeout if appear not set', done => {
let calledBeforeEntered = false
setTimeout(() => {
calledBeforeEntered = true
}, 10)
const wrapper = mount(
<Transition in={true} timeout={{ enter: 20, exit: 10 }} appear>
<div />
</Transition>
)
wrapper.setProps({
onEntered() {
if (calledBeforeEntered) {
done()
} else {
throw new Error('wrong timeout')
}
},
})
})
it('should use appear timeout if appear is set', done => {
const wrapper = mount(
<Transition in={true} timeout={{ enter: 20, exit: 10, appear: 5 }} appear>
<div />
</Transition>
)
let isCausedLate = false
setTimeout(() => {
isCausedLate = true
}, 15)
wrapper.setProps({
onEntered() {
if (isCausedLate) {
throw new Error('wrong timeout')
} else {
done()
}
}
})
})
})
describe('entering', () => {
let wrapper
beforeEach(() => {
wrapper = mount(
<Transition timeout={10}>
<div />
</Transition>
)
})
it('should fire callbacks', done => {
let onEnter = sinon.spy()
let onEntering = sinon.spy()
expect(wrapper.state('status')).toEqual(EXITED)
wrapper.setProps({
in: true,
onEnter,
onEntering,
onEntered() {
expect(onEnter.calledOnce).toEqual(true)
expect(onEntering.calledOnce).toEqual(true)
expect(onEnter.calledBefore(onEntering)).toEqual(true)
done()
},
})
})
it('should move to each transition state', done => {
let count = 0
expect(wrapper.state('status')).toEqual(EXITED)
wrapper.setProps({
in: true,
onEnter() {
count++
expect(wrapper.state('status')).toEqual(EXITED)
},
onEntering() {
count++
expect(wrapper.state('status')).toEqual(ENTERING)
},
onEntered() {
expect(wrapper.state('status')).toEqual(ENTERED)
expect(count).toEqual(2)
done()
},
})
})
})
describe('exiting', () => {
let wrapper
beforeEach(() => {
wrapper = mount(
<Transition in timeout={10}>
<div />
</Transition>
)
})
it('should fire callbacks', done => {
let onExit = sinon.spy()
let onExiting = sinon.spy()
expect(wrapper.state('status')).toEqual(ENTERED)
wrapper.setProps({
in: false,
onExit,
onExiting,
onExited() {
expect(onExit.calledOnce).toEqual(true)
expect(onExiting.calledOnce).toEqual(true)
expect(onExit.calledBefore(onExiting)).toEqual(true)
done()
},
})
})
it('should move to each transition state', done => {
let count = 0
expect(wrapper.state('status')).toEqual(ENTERED)
wrapper.setProps({
in: false,
onExit() {
count++
expect(wrapper.state('status')).toEqual(ENTERED)
},
onExiting() {
count++
expect(wrapper.state('status')).toEqual(EXITING)
},
onExited() {
expect(wrapper.state('status')).toEqual(EXITED)
expect(count).toEqual(2)
done()
},
})
})
})
describe('mountOnEnter', () => {
class MountTransition extends React.Component {
constructor(props) {
super(props)
this.state = { in: props.initialIn }
}
render() {
const { ...props } = this.props
delete props.initialIn
return (
<Transition
ref={transition => this.transition = this.transition || transition}
mountOnEnter
in={this.state.in}
timeout={10}
{...props}
>
<div />
</Transition>
)
}
getStatus = () => {
return this.transition.state.status
}
}
it('should mount when entering', done => {
const wrapper = mount(
<MountTransition
initialIn={false}
onEnter={() => {
expect(wrapper.instance().getStatus()).toEqual(EXITED)
expect(wrapper.getDOMNode()).toExist()
done()
}}
/>
)
expect(wrapper.instance().getStatus()).toEqual(UNMOUNTED)
expect(wrapper.getDOMNode()).not.toExist()
wrapper.setProps({ in: true })
})
it('should stay mounted after exiting', done => {
const wrapper = mount(
<MountTransition
initialIn={false}
onEntered={() => {
expect(wrapper.instance().getStatus()).toEqual(ENTERED)
expect(wrapper.getDOMNode()).toExist()
wrapper.setState({ in: false })
}}
onExited={() => {
expect(wrapper.instance().getStatus()).toEqual(EXITED)
expect(wrapper.getDOMNode()).toExist()
done()
}}
/>
)
expect(wrapper.getDOMNode()).not.toExist()
wrapper.setState({ in: true })
})
})
describe('unmountOnExit', () => {
class UnmountTransition extends React.Component {
constructor(props) {
super(props)
this.state = { in: props.initialIn }
}
render() {
const { ...props } = this.props
delete props.initialIn
return (
<Transition
ref={transition => this.transition = this.transition || transition}
unmountOnExit
in={this.state.in}
timeout={10}
{...props}
>
<div />
</Transition>
)
}
getStatus = () => {
return this.transition.state.status
}
}
it('should mount when entering', done => {
const wrapper = mount(
<UnmountTransition
initialIn={false}
onEnter={() => {
expect(wrapper.getStatus()).toEqual(EXITED)
expect(ReactDOM.findDOMNode(wrapper)).toExist()
done()
}}
/>
).instance()
expect(wrapper.getStatus()).toEqual(UNMOUNTED)
expect(ReactDOM.findDOMNode(wrapper)).toBeNull()
wrapper.setState({ in: true })
})
it('should unmount after exiting', done => {
const wrapper = mount(
<UnmountTransition
initialIn
onExited={() => {
setTimeout(() => {
expect(wrapper.getStatus()).toEqual(UNMOUNTED)
expect(ReactDOM.findDOMNode(wrapper)).not.toExist()
done()
})
}}
/>
).instance()
expect(wrapper.getStatus()).toEqual(ENTERED)
expect(ReactDOM.findDOMNode(wrapper)).toExist()
wrapper.setState({ in: false })
})
})
})