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ReactCSSTransitionGroup-test.js
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ReactCSSTransitionGroup-test.js
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/**
* Copyright 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @emails react-core
*/
'use strict';
var CSSCore = require('CSSCore');
var React;
var ReactDOM;
var ReactCSSTransitionGroup;
// Most of the real functionality is covered in other unit tests, this just
// makes sure we're wired up correctly.
describe('ReactCSSTransitionGroup', function() {
var container;
beforeEach(function() {
jest.resetModuleRegistry();
React = require('React');
ReactDOM = require('ReactDOM');
ReactCSSTransitionGroup = require('ReactCSSTransitionGroup');
container = document.createElement('div');
spyOn(console, 'error');
});
it('should warn if timeouts aren\'t specified', function() {
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeave={true}
>
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
// Warning about the missing transitionLeaveTimeout prop
expect(console.error.argsForCall.length).toBe(1);
});
it('should not warn if timeouts is zero', function() {
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeave={true}
transitionLeaveTimeout={0}
>
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(console.error.argsForCall.length).toBe(0);
});
it('should clean-up silently after the timeout elapses', function() {
var a = ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeaveTimeout={200}
>
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
setTimeout.mock.calls.length = 0;
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeaveTimeout={200}
>
<span key="two" id="two" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(2);
expect(ReactDOM.findDOMNode(a).childNodes[0].id).toBe('two');
expect(ReactDOM.findDOMNode(a).childNodes[1].id).toBe('one');
// For some reason jst is adding extra setTimeout()s and grunt test isn't,
// so we need to do this disgusting hack.
for (var i = 0; i < setTimeout.mock.calls.length; i++) {
if (setTimeout.mock.calls[i][1] === 200) {
setTimeout.mock.calls[i][0]();
break;
}
}
// No warnings
expect(console.error.argsForCall.length).toBe(0);
// The leaving child has been removed
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
expect(ReactDOM.findDOMNode(a).childNodes[0].id).toBe('two');
});
it('should keep both sets of DOM nodes around', function() {
var a = ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
<span key="two" id="two" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(2);
expect(ReactDOM.findDOMNode(a).childNodes[0].id).toBe('two');
expect(ReactDOM.findDOMNode(a).childNodes[1].id).toBe('one');
});
it('should switch transitionLeave from false to true', function() {
var a = ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeave={false}>
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeave={false}>
<span key="two" id="two" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnter={false}
transitionLeave={true}>
<span key="three" id="three" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(2);
expect(ReactDOM.findDOMNode(a).childNodes[0].id).toBe('three');
expect(ReactDOM.findDOMNode(a).childNodes[1].id).toBe('two');
});
it('should work with no children', function() {
ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo" />,
container
);
});
it('should work with a null child', function() {
ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
{[null]}
</ReactCSSTransitionGroup>,
container
);
});
it('should transition from one to null', function() {
var a = ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
{null}
</ReactCSSTransitionGroup>,
container
);
// (Here, we expect the original child to stick around but test that no
// exception is thrown)
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
expect(ReactDOM.findDOMNode(a).childNodes[0].id).toBe('one');
});
it('should transition from false to one', function() {
var a = ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
{false}
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(0);
ReactDOM.render(
<ReactCSSTransitionGroup transitionName="yolo">
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
expect(ReactDOM.findDOMNode(a).childNodes[0].id).toBe('one');
});
it('should use transition-type specific names when they\'re provided', function() {
var customTransitionNames = {
enter: 'custom-entering',
leave: 'custom-leaving',
};
var a = ReactDOM.render(
<ReactCSSTransitionGroup
transitionName={customTransitionNames}
transitionEnterTimeout={1}
transitionLeaveTimeout={1}
>
<span key="one" id="one" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(1);
// Add an element
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName={customTransitionNames}
transitionEnterTimeout={1}
transitionLeaveTimeout={1}
>
<span key="one" id="one" />
<span key="two" id="two" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(2);
var enteringNode = ReactDOM.findDOMNode(a).childNodes[1];
expect(CSSCore.hasClass(enteringNode, 'custom-entering')).toBe(true);
// Remove an element
ReactDOM.render(
<ReactCSSTransitionGroup
transitionName={customTransitionNames}
transitionEnterTimeout={1}
transitionLeaveTimeout={1}
>
<span key="two" id="two" />
</ReactCSSTransitionGroup>,
container
);
expect(ReactDOM.findDOMNode(a).childNodes.length).toBe(2);
var leavingNode = ReactDOM.findDOMNode(a).childNodes[0];
expect(CSSCore.hasClass(leavingNode, 'custom-leaving')).toBe(true);
});
it('should clear transition timeouts when unmounted', function() {
var Component = React.createClass({
render: function() {
return (
<ReactCSSTransitionGroup
transitionName="yolo"
transitionEnterTimeout={500}>
{this.props.children}
</ReactCSSTransitionGroup>
);
},
});
ReactDOM.render(<Component/>, container);
ReactDOM.render(<Component><span key="yolo" id="yolo"/></Component>, container);
ReactDOM.unmountComponentAtNode(container);
// Testing that no exception is thrown here, as the timeout has been cleared.
jest.runAllTimers();
});
});