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Use only public API for ChangeEventPlugin-test.js #11333

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merged 13 commits into from
Nov 24, 2017
Merged

Use only public API for ChangeEventPlugin-test.js #11333

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29253ec
Use only public API for ChangeEventPlugin-test.js
Ethan-Arrowood Oct 23, 2017
df01d2b
precommit commands complete
Ethan-Arrowood Oct 23, 2017
c7777f9
Removed comments
Ethan-Arrowood Oct 25, 2017
b6283f0
Merge branch 'master' into open-test-to-api
gaearon Oct 26, 2017
27ec33f
Merge branch 'master' into open-test-to-api
jquense Nov 6, 2017
bff4f3b
Improving event dispatchers
Ethan-Arrowood Nov 12, 2017
8be2a24
Merge remote-tracking branch 'upstream/master' into open-test-to-api
Ethan-Arrowood Nov 24, 2017
054c955
Updated tests
Ethan-Arrowood Nov 24, 2017
6238df3
Fixed for revisions
Ethan-Arrowood Nov 24, 2017
852e663
Prettified
Ethan-Arrowood Nov 24, 2017
7bb2124
Add more details and fixes to tests
gaearon Nov 24, 2017
0570084
Not internal anymore
gaearon Nov 24, 2017
d34a205
Remove unused code
gaearon Nov 24, 2017
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219 changes: 119 additions & 100 deletions packages/react-dom/src/events/__tests__/ChangeEventPlugin-test.internal.js
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Original file line number Diff line number Diff line change
Expand Up @@ -11,108 +11,133 @@

var React = require('react');
var ReactDOM = require('react-dom');
var ReactTestUtils = require('react-dom/test-utils');
// TODO: can we express this test with only public API?
var ChangeEventPlugin = require('../ChangeEventPlugin').default;
var inputValueTracking = require('../../client/inputValueTracking');

function getTrackedValue(elem) {
var tracker = inputValueTracking._getTrackerFromNode(elem);
return tracker.getValue();
return elem.value;
}

function setTrackedValue(elem, value) {
var tracker = inputValueTracking._getTrackerFromNode(elem);
tracker.setValue(value);
}

function setUntrackedValue(elem, value) {
var tracker = inputValueTracking._getTrackerFromNode(elem);
var current = tracker.getValue();
var setUntrackedChecked = Object.getOwnPropertyDescriptor(
HTMLInputElement.prototype,
'checked',
).set;

if (elem.type === 'checkbox' || elem.type === 'radio') {
elem.checked = value;
} else {
elem.value = value;
}
tracker.setValue(current);
}
var setUntrackedValue = Object.getOwnPropertyDescriptor(
HTMLInputElement.prototype,
'value',
).set;

describe('ChangeEventPlugin', () => {
var container;

beforeEach(() => {
container = document.createElement('div');
document.body.appendChild(container);
});

afterEach(() => {
document.body.removeChild(container);
container = null;
});

it('should fire change for checkbox input', () => {
var called = 0;

function cb(e) {
called = 1;
called++;
expect(e.type).toBe('change');
}

var input = ReactTestUtils.renderIntoDocument(
var node = ReactDOM.render(
<input type="checkbox" onChange={cb} />,
container,
);

setUntrackedValue(input, true);
ReactTestUtils.SimulateNative.click(input);
node.dispatchEvent(new Event('click'));
expect(called).toBe(0);

setUntrackedChecked.call(node, false);
node.dispatchEvent(new Event('click', {bubbles: true, cancelable: true}));
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@gaearon gaearon Nov 24, 2017 •
edited
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We should leave a comment about jsdom click misbehaving. It's not obvious and doesn't happen in the browser (it's also possible jsdom has fixed this in new versions so we need to make it clear in case somebody later tries to update it, and the test will fail).

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Can you please elaborate on what a 'common' is?

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node.dispatchEvent(new Event('click'));
expect(called).toBe(0);

Is this what you mean?

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Sorry, autocorrect. Meant "we should leave a comment". Like in the sample I wrote above.

expect(called).toBe(1);
});

it('should catch setting the value programmatically', () => {
var input = ReactTestUtils.renderIntoDocument(
<input type="text" defaultValue="foo" />,
);
expect(node.checked).toBe(true);

input.value = 'bar';
expect(getTrackedValue(input)).toBe('bar');
setUntrackedChecked.call(node, true);
node.dispatchEvent(new Event('click', {bubbles: true, cancelable: true}));
expect(called).toBe(2);
expect(node.checked).toBe(false);
});

it('should not fire change when setting the value programmatically', () => {
it('should not fire change setting the value programmatically', () => {
var called = 0;

function cb(e) {
called += 1;
called++;
expect(e.type).toBe('change');
}

var input = ReactTestUtils.renderIntoDocument(
<input type="text" onChange={cb} defaultValue="foo" />,
var input = ReactDOM.render(
<input type="text" defaultValue="foo" onChange={cb} />,
container,
);

input.value = 'bar';
ReactTestUtils.SimulateNative.change(input);
input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));
expect(called).toBe(0);

setUntrackedValue(input, 'foo');
ReactTestUtils.SimulateNative.change(input);
setUntrackedValue.call(input, 'foo');
input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));

expect(called).toBe(1);
expect(input.value).toBe('foo');

input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));
expect(called).toBe(1);
});

it('should not fire change when setting checked programmatically', () => {
var called = 0;

function cb(e) {
called += 1;
called++;
expect(e.type).toBe('change');
}

var input = ReactTestUtils.renderIntoDocument(
var input = ReactDOM.render(
<input type="checkbox" onChange={cb} defaultChecked={true} />,
container,
);

//set programmatically
input.checked = true;
ReactTestUtils.SimulateNative.click(input);

setUntrackedChecked.call(input, false);
input.dispatchEvent(new Event('click', {bubbles: true, cancelable: true}));
expect(called).toBe(0);

input.checked = false;
setTrackedValue(input, undefined);
ReactTestUtils.SimulateNative.click(input);
setUntrackedChecked.call(input, true);
input.dispatchEvent(new Event('click', {bubbles: true, cancelable: true}));

expect(called).toBe(1);
});

it('should catch setting the value programmatically', () => {
var called = 0;

function cb(e) {
called++;
expect(e.type).toBe('change');
}

var input = ReactDOM.render(
<input type="text" onChange={cb} defaultValue="foo" />,
container,
);

setUntrackedValue.call(input, 'bar');
expect(called).toBe(0);
expect(getTrackedValue(input)).toBe('bar');
});

it('should unmount', () => {
var container = document.createElement('div');
var input = ReactDOM.render(<input />, container);

ReactDOM.unmountComponentAtNode(container);
Expand All @@ -122,78 +147,71 @@ describe('ChangeEventPlugin', () => {
var called = 0;

function cb(e) {
called += 1;
called++;
expect(e.type).toBe('change');
}

var input = ReactTestUtils.renderIntoDocument(
var input = ReactDOM.render(
<input type="radio" onChange={cb} />,
container,
);
setUntrackedValue(input, true);
ReactTestUtils.SimulateNative.click(input);
ReactTestUtils.SimulateNative.click(input);

setUntrackedChecked.call(input, true);
input.dispatchEvent(new Event('click', {bubbles: true, cancelable: true}));
input.dispatchEvent(new Event('click', {bubbles: true, cancelable: true}));
expect(called).toBe(1);
});

it('should deduplicate input value change events', () => {
var input;
var called = 0;

function cb(e) {
called += 1;
called++;
expect(e.type).toBe('change');
}

[
<input type="text" onChange={cb} />,
<input type="number" onChange={cb} />,
<input type="range" onChange={cb} />,
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Seems like it was important to do this for all types of inputs, and not just 'text'?

].forEach(function(element) {
called = 0;
input = ReactTestUtils.renderIntoDocument(element);

setUntrackedValue(input, '40');
ReactTestUtils.SimulateNative.change(input);
ReactTestUtils.SimulateNative.change(input);
expect(called).toBe(1);

called = 0;
input = ReactTestUtils.renderIntoDocument(element);
setUntrackedValue(input, '40');
ReactTestUtils.SimulateNative.input(input);
ReactTestUtils.SimulateNative.input(input);
expect(called).toBe(1);

called = 0;
input = ReactTestUtils.renderIntoDocument(element);
setUntrackedValue(input, '40');
ReactTestUtils.SimulateNative.input(input);
ReactTestUtils.SimulateNative.change(input);
expect(called).toBe(1);
});
var input = ReactDOM.render(<input type="text" onChange={cb} />, container);

setUntrackedValue.call(input, 'foo');

input.dispatchEvent(new Event('change', {bubbles: true, cancelable: true}));
input.dispatchEvent(new Event('change', {bubbles: true, cancelable: true}));

expect(called).toBe(1);

setUntrackedValue.call(input, 'bar');

input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));
input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));

expect(called).toBe(2);

setUntrackedValue.call(input, 'foobar');

input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));
input.dispatchEvent(new Event('change', {bubbles: true, cancelable: true}));

expect(called).toBe(3);
});

it('should listen for both change and input events when supported', () => {
var called = 0;

function cb(e) {
called += 1;
called++;
expect(e.type).toBe('change');
}

if (!ChangeEventPlugin._isInputEventSupported) {
return;
}

var input = ReactTestUtils.renderIntoDocument(
var input = ReactDOM.render(
<input type="range" onChange={cb} />,
container,
);
setUntrackedValue(input, 'bar');

ReactTestUtils.SimulateNative.input(input);

setUntrackedValue(input, 'foo');
setUntrackedValue.call(input, '0');
input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));

ReactTestUtils.SimulateNative.change(input);
setUntrackedValue.call(input, '1');
input.dispatchEvent(new Event('change', {bubbles: true, cancelable: true}));

expect(called).toBe(2);
});
Expand All @@ -202,21 +220,22 @@ describe('ChangeEventPlugin', () => {
var called = 0;

function cb(e) {
called += 1;
called++;
expect(e.type).toBe('change');
}

var input = ReactTestUtils.renderIntoDocument(
var input = ReactDOM.render(
<input type="range" onChange={cb} />,
container,
);
setUntrackedValue(input, '40');
ReactTestUtils.SimulateNative.input(input);
ReactTestUtils.SimulateNative.change(input);
setUntrackedValue.call(input, '40');
input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));
input.dispatchEvent(new Event('change', {bubbles: true, cancelable: true}));

setUntrackedValue(input, 'foo');
setUntrackedValue.call(input, 'foo');
input.dispatchEvent(new Event('input', {bubbles: true, cancelable: true}));
input.dispatchEvent(new Event('change', {bubbles: true, cancelable: true}));

ReactTestUtils.SimulateNative.input(input);
ReactTestUtils.SimulateNative.change(input);
expect(called).toBe(2);
});
});