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josepharharzhengjitf
josepharhar
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Add custom element property support behind a flag (facebook#22184)
* custom element props * custom element events * use function type for on* * tests, htmlFor * className * fix ReactDOMComponent-test * started on adding feature flag * added feature flag to all feature flag files * everything passes * tried to fix getPropertyInfo * used @GATE and __experimental__ * remove flag gating for test which already passes * fix onClick test * add __EXPERIMENTAL__ to www flags, rename eventProxy * Add innerText and textContent to reservedProps * Emit warning when assigning to read only properties in client * Revert "Emit warning when assigning to read only properties in client" This reverts commit 1a093e5. * Emit warning when assigning to read only properties during hydration * yarn prettier-all * Gate hydration warning test on flag * Fix gating in hydration warning test * Fix assignment to boolean properties * Replace _listeners with random suffix matching * Improve gating for hydration warning test * Add outerText and outerHTML to server warning properties * remove nameLower logic * fix capture event listener test * Add coverage for changing custom event listeners * yarn prettier-all * yarn lint --fix * replace getCustomElementEventHandlersFromNode with getFiberCurrentPropsFromNode * Remove previous value when adding event listener * flow, lint, prettier * Add dispatchEvent to make sure nothing crashes * Add state change to reserved attribute tests * Add missing feature flag test gate * Reimplement SSR changes in ReactDOMServerFormatConfig * Test hydration for objects and functions * add missing test gate * remove extraneous comment * Add attribute->property test
1 parent 9e93a23 commit f215bd0

17 files changed

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lines changed

‎packages/react-dom/src/__tests__/DOMPropertyOperations-test.js

+349
Original file line numberDiff line numberDiff line change
@@ -155,6 +155,355 @@ describe('DOMPropertyOperations', () => {
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// Regression test for https://github.com/facebook/react/issues/6119
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expect(container.firstChild.hasAttribute('value')).toBe(false);
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});
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// @gate enableCustomElementPropertySupport
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it('custom element custom events lowercase', () => {
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const oncustomevent = jest.fn();
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function Test() {
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return <my-custom-element oncustomevent={oncustomevent} />;
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}
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const container = document.createElement('div');
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ReactDOM.render(<Test />, container);
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container
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.querySelector('my-custom-element')
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.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(1);
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});
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// @gate enableCustomElementPropertySupport
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it('custom element custom events uppercase', () => {
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const oncustomevent = jest.fn();
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function Test() {
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return <my-custom-element onCustomevent={oncustomevent} />;
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}
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const container = document.createElement('div');
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ReactDOM.render(<Test />, container);
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container
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.querySelector('my-custom-element')
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.dispatchEvent(new Event('Customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(1);
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});
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// @gate enableCustomElementPropertySupport
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it('custom element custom event with dash in name', () => {
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const oncustomevent = jest.fn();
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function Test() {
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return <my-custom-element oncustom-event={oncustomevent} />;
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}
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const container = document.createElement('div');
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ReactDOM.render(<Test />, container);
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container
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.querySelector('my-custom-element')
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.dispatchEvent(new Event('custom-event'));
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expect(oncustomevent).toHaveBeenCalledTimes(1);
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});
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// @gate enableCustomElementPropertySupport
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it('custom element remove event handler', () => {
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const oncustomevent = jest.fn();
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function Test(props) {
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return <my-custom-element oncustomevent={props.handler} />;
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}
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const container = document.createElement('div');
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ReactDOM.render(<Test handler={oncustomevent} />, container);
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const customElement = container.querySelector('my-custom-element');
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customElement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(1);
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ReactDOM.render(<Test handler={false} />, container);
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// Make sure that the second render didn't create a new element. We want
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// to make sure removeEventListener actually gets called on the same element.
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expect(customElement).toBe(customElement);
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customElement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(1);
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ReactDOM.render(<Test handler={oncustomevent} />, container);
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customElement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(2);
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const oncustomevent2 = jest.fn();
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ReactDOM.render(<Test handler={oncustomevent2} />, container);
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customElement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(2);
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expect(oncustomevent2).toHaveBeenCalledTimes(1);
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});
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it('custom elements shouldnt have non-functions for on* attributes treated as event listeners', () => {
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const container = document.createElement('div');
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ReactDOM.render(
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<my-custom-element
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onstring={'hello'}
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onobj={{hello: 'world'}}
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onarray={['one', 'two']}
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ontrue={true}
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onfalse={false}
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/>,
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container,
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);
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const customElement = container.querySelector('my-custom-element');
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expect(customElement.getAttribute('onstring')).toBe('hello');
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expect(customElement.getAttribute('onobj')).toBe('[object Object]');
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expect(customElement.getAttribute('onarray')).toBe('one,two');
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expect(customElement.getAttribute('ontrue')).toBe('true');
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expect(customElement.getAttribute('onfalse')).toBe('false');
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// Dispatch the corresponding event names to make sure that nothing crashes.
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customElement.dispatchEvent(new Event('string'));
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customElement.dispatchEvent(new Event('obj'));
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customElement.dispatchEvent(new Event('array'));
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customElement.dispatchEvent(new Event('true'));
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customElement.dispatchEvent(new Event('false'));
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});
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it('custom elements should still have onClick treated like regular elements', () => {
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let syntheticClickEvent = null;
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const syntheticEventHandler = jest.fn(
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event => (syntheticClickEvent = event),
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);
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let nativeClickEvent = null;
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const nativeEventHandler = jest.fn(event => (nativeClickEvent = event));
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function Test() {
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return <my-custom-element onClick={syntheticEventHandler} />;
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}
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const container = document.createElement('div');
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document.body.appendChild(container);
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ReactDOM.render(<Test />, container);
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const customElement = container.querySelector('my-custom-element');
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customElement.onclick = nativeEventHandler;
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container.querySelector('my-custom-element').click();
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expect(nativeEventHandler).toHaveBeenCalledTimes(1);
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expect(syntheticEventHandler).toHaveBeenCalledTimes(1);
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expect(syntheticClickEvent.nativeEvent).toBe(nativeClickEvent);
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});
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// @gate enableCustomElementPropertySupport
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it('custom elements should allow custom events with capture event listeners', () => {
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const oncustomeventCapture = jest.fn();
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const oncustomevent = jest.fn();
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function Test() {
288+
return (
289+
<my-custom-element
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oncustomeventCapture={oncustomeventCapture}
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oncustomevent={oncustomevent}>
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<div />
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</my-custom-element>
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);
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}
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const container = document.createElement('div');
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ReactDOM.render(<Test />, container);
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container
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.querySelector('my-custom-element > div')
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.dispatchEvent(new Event('customevent', {bubbles: false}));
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expect(oncustomeventCapture).toHaveBeenCalledTimes(1);
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expect(oncustomevent).toHaveBeenCalledTimes(0);
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});
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it('innerHTML should not work on custom elements', () => {
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const container = document.createElement('div');
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ReactDOM.render(<my-custom-element innerHTML="foo" />, container);
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const customElement = container.querySelector('my-custom-element');
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expect(customElement.getAttribute('innerHTML')).toBe(null);
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expect(customElement.hasChildNodes()).toBe(false);
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// Render again to verify the update codepath doesn't accidentally let
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// something through.
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ReactDOM.render(<my-custom-element innerHTML="bar" />, container);
315+
expect(customElement.getAttribute('innerHTML')).toBe(null);
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expect(customElement.hasChildNodes()).toBe(false);
317+
});
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// @gate enableCustomElementPropertySupport
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it('innerText should not work on custom elements', () => {
321+
const container = document.createElement('div');
322+
ReactDOM.render(<my-custom-element innerText="foo" />, container);
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const customElement = container.querySelector('my-custom-element');
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expect(customElement.getAttribute('innerText')).toBe(null);
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expect(customElement.hasChildNodes()).toBe(false);
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// Render again to verify the update codepath doesn't accidentally let
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// something through.
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ReactDOM.render(<my-custom-element innerText="bar" />, container);
330+
expect(customElement.getAttribute('innerText')).toBe(null);
331+
expect(customElement.hasChildNodes()).toBe(false);
332+
});
333+
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// @gate enableCustomElementPropertySupport
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it('textContent should not work on custom elements', () => {
336+
const container = document.createElement('div');
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ReactDOM.render(<my-custom-element textContent="foo" />, container);
338+
const customElement = container.querySelector('my-custom-element');
339+
expect(customElement.getAttribute('textContent')).toBe(null);
340+
expect(customElement.hasChildNodes()).toBe(false);
341+
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// Render again to verify the update codepath doesn't accidentally let
343+
// something through.
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ReactDOM.render(<my-custom-element textContent="bar" />, container);
345+
expect(customElement.getAttribute('textContent')).toBe(null);
346+
expect(customElement.hasChildNodes()).toBe(false);
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});
348+
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// @gate enableCustomElementPropertySupport
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it('values should not be converted to booleans when assigning into custom elements', () => {
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const container = document.createElement('div');
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document.body.appendChild(container);
353+
ReactDOM.render(<my-custom-element />, container);
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const customElement = container.querySelector('my-custom-element');
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customElement.foo = null;
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// true => string
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ReactDOM.render(<my-custom-element foo={true} />, container);
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expect(customElement.foo).toBe(true);
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ReactDOM.render(<my-custom-element foo="bar" />, container);
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expect(customElement.foo).toBe('bar');
362+
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// false => string
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ReactDOM.render(<my-custom-element foo={false} />, container);
365+
expect(customElement.foo).toBe(false);
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ReactDOM.render(<my-custom-element foo="bar" />, container);
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expect(customElement.foo).toBe('bar');
368+
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// true => null
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ReactDOM.render(<my-custom-element foo={true} />, container);
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expect(customElement.foo).toBe(true);
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ReactDOM.render(<my-custom-element foo={null} />, container);
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expect(customElement.foo).toBe(null);
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// false => null
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ReactDOM.render(<my-custom-element foo={false} />, container);
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expect(customElement.foo).toBe(false);
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ReactDOM.render(<my-custom-element foo={null} />, container);
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expect(customElement.foo).toBe(null);
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});
381+
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// @gate enableCustomElementPropertySupport
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it('custom element custom event handlers assign multiple types', () => {
384+
const container = document.createElement('div');
385+
document.body.appendChild(container);
386+
const oncustomevent = jest.fn();
387+
388+
// First render with string
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ReactDOM.render(<my-custom-element oncustomevent={'foo'} />, container);
390+
const customelement = container.querySelector('my-custom-element');
391+
customelement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(0);
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expect(customelement.oncustomevent).toBe(undefined);
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expect(customelement.getAttribute('oncustomevent')).toBe('foo');
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// string => event listener
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ReactDOM.render(
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<my-custom-element oncustomevent={oncustomevent} />,
399+
container,
400+
);
401+
customelement.dispatchEvent(new Event('customevent'));
402+
expect(oncustomevent).toHaveBeenCalledTimes(1);
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expect(customelement.oncustomevent).toBe(undefined);
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expect(customelement.getAttribute('oncustomevent')).toBe(null);
405+
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// event listener => string
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ReactDOM.render(<my-custom-element oncustomevent={'foo'} />, container);
408+
customelement.dispatchEvent(new Event('customevent'));
409+
expect(oncustomevent).toHaveBeenCalledTimes(1);
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expect(customelement.oncustomevent).toBe(undefined);
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expect(customelement.getAttribute('oncustomevent')).toBe('foo');
412+
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// string => nothing
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ReactDOM.render(<my-custom-element />, container);
415+
customelement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(1);
417+
expect(customelement.oncustomevent).toBe(undefined);
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expect(customelement.getAttribute('oncustomevent')).toBe(null);
419+
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// nothing => event listener
421+
ReactDOM.render(
422+
<my-custom-element oncustomevent={oncustomevent} />,
423+
container,
424+
);
425+
customelement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(2);
427+
expect(customelement.oncustomevent).toBe(undefined);
428+
expect(customelement.getAttribute('oncustomevent')).toBe(null);
429+
});
430+
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// @gate enableCustomElementPropertySupport
432+
it('custom element custom event handlers assign multiple types with setter', () => {
433+
const container = document.createElement('div');
434+
document.body.appendChild(container);
435+
const oncustomevent = jest.fn();
436+
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// First render with nothing
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ReactDOM.render(<my-custom-element />, container);
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const customelement = container.querySelector('my-custom-element');
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// Install a setter to activate the `in` heuristic
441+
Object.defineProperty(customelement, 'oncustomevent', {
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set: function(x) {
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this._oncustomevent = x;
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},
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get: function() {
446+
return this._oncustomevent;
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},
448+
});
449+
expect(customelement.oncustomevent).toBe(undefined);
450+
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// nothing => event listener
452+
ReactDOM.render(
453+
<my-custom-element oncustomevent={oncustomevent} />,
454+
container,
455+
);
456+
customelement.dispatchEvent(new Event('customevent'));
457+
expect(oncustomevent).toHaveBeenCalledTimes(1);
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expect(customelement.oncustomevent).toBe(null);
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expect(customelement.getAttribute('oncustomevent')).toBe(null);
460+
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// event listener => string
462+
ReactDOM.render(<my-custom-element oncustomevent={'foo'} />, container);
463+
customelement.dispatchEvent(new Event('customevent'));
464+
expect(oncustomevent).toHaveBeenCalledTimes(1);
465+
expect(customelement.oncustomevent).toBe('foo');
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expect(customelement.getAttribute('oncustomevent')).toBe(null);
467+
468+
// string => event listener
469+
ReactDOM.render(
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<my-custom-element oncustomevent={oncustomevent} />,
471+
container,
472+
);
473+
customelement.dispatchEvent(new Event('customevent'));
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expect(oncustomevent).toHaveBeenCalledTimes(2);
475+
expect(customelement.oncustomevent).toBe(null);
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expect(customelement.getAttribute('oncustomevent')).toBe(null);
477+
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// event listener => nothing
479+
ReactDOM.render(<my-custom-element />, container);
480+
customelement.dispatchEvent(new Event('customevent'));
481+
expect(oncustomevent).toHaveBeenCalledTimes(2);
482+
expect(customelement.oncustomevent).toBe(null);
483+
expect(customelement.getAttribute('oncustomevent')).toBe(null);
484+
});
485+
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// @gate enableCustomElementPropertySupport
487+
it('assigning to a custom element property should not remove attributes', () => {
488+
const container = document.createElement('div');
489+
document.body.appendChild(container);
490+
ReactDOM.render(<my-custom-element foo="one" />, container);
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const customElement = container.querySelector('my-custom-element');
492+
expect(customElement.getAttribute('foo')).toBe('one');
493+
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// Install a setter to activate the `in` heuristic
495+
Object.defineProperty(customElement, 'foo', {
496+
set: function(x) {
497+
this._foo = x;
498+
},
499+
get: function() {
500+
return this._foo;
501+
},
502+
});
503+
ReactDOM.render(<my-custom-element foo="two" />, container);
504+
expect(customElement.foo).toBe('two');
505+
expect(customElement.getAttribute('foo')).toBe('one');
506+
});
158507
});
159508

160509
describe('deleteValueForProperty', () => {

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