30b577138d
git-subtree-dir: thirdparty/preact git-subtree-split: b2d90cc116f1d1998f7a7c98dc6986bf4c1841f4
125 lines
3.0 KiB
JavaScript
125 lines
3.0 KiB
JavaScript
import { h, render, rerender, Component } from '../../src/preact';
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/** @jsx h */
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describe('Component spec', () => {
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let scratch;
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before( () => {
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scratch = document.createElement('div');
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(document.body || document.documentElement).appendChild(scratch);
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});
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beforeEach( () => {
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scratch.innerHTML = '';
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});
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after( () => {
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scratch.parentNode.removeChild(scratch);
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scratch = null;
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});
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describe('defaultProps', () => {
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it('should apply default props on initial render', () => {
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class WithDefaultProps extends Component {
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constructor(props, context) {
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super(props, context);
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expect(props).to.be.deep.equal({
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fieldA: 1, fieldB: 2,
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fieldC: 1, fieldD: 2
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});
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}
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render() {
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return <div />;
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}
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}
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WithDefaultProps.defaultProps = { fieldC: 1, fieldD: 1 };
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render(<WithDefaultProps fieldA={1} fieldB={2} fieldD={2} />, scratch);
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});
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it('should apply default props on rerender', () => {
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let doRender;
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class Outer extends Component {
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constructor() {
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super();
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this.state = { i:1 };
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}
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componentDidMount() {
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doRender = () => this.setState({ i: 2 });
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}
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render(props, { i }) {
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return <WithDefaultProps fieldA={1} fieldB={i} fieldD={i} />;
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}
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}
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class WithDefaultProps extends Component {
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constructor(props, context) {
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super(props, context);
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this.ctor(props, context);
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}
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ctor(){}
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componentWillReceiveProps() {}
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render() {
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return <div />;
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}
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}
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WithDefaultProps.defaultProps = { fieldC: 1, fieldD: 1 };
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let proto = WithDefaultProps.prototype;
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sinon.spy(proto, 'ctor');
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sinon.spy(proto, 'componentWillReceiveProps');
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sinon.spy(proto, 'render');
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render(<Outer />, scratch);
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doRender();
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const PROPS1 = {
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fieldA: 1, fieldB: 1,
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fieldC: 1, fieldD: 1
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};
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const PROPS2 = {
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fieldA: 1, fieldB: 2,
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fieldC: 1, fieldD: 2
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};
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expect(proto.ctor).to.have.been.calledWith(PROPS1);
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expect(proto.render).to.have.been.calledWith(PROPS1);
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rerender();
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// expect(proto.ctor).to.have.been.calledWith(PROPS2);
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expect(proto.componentWillReceiveProps).to.have.been.calledWith(PROPS2);
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expect(proto.render).to.have.been.calledWith(PROPS2);
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});
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// @TODO: migrate this to preact-compat
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xit('should cache default props', () => {
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class WithDefaultProps extends Component {
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constructor(props, context) {
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super(props, context);
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expect(props).to.be.deep.equal({
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fieldA: 1, fieldB: 2,
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fieldC: 1, fieldD: 2,
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fieldX: 10
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});
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}
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getDefaultProps() {
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return { fieldA: 1, fieldB: 1 };
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}
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render() {
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return <div />;
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}
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}
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WithDefaultProps.defaultProps = { fieldC: 1, fieldD: 1 };
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sinon.spy(WithDefaultProps.prototype, 'getDefaultProps');
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render((
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<div>
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<WithDefaultProps fieldB={2} fieldD={2} fieldX={10} />
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<WithDefaultProps fieldB={2} fieldD={2} fieldX={10} />
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<WithDefaultProps fieldB={2} fieldD={2} fieldX={10} />
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</div>
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), scratch);
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expect(WithDefaultProps.prototype.getDefaultProps).to.be.calledOnce;
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});
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});
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});
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