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using the wrong renderer's act() should warn (#15756)
* warn when using the wrong renderer's act around another renderer's updates like it says. it uses a real object as the sigil (instead of just a boolean). specifically, it uses a renderer's flushPassiveEffects as the sigil. We also run tests for this separate from our main suite (which doesn't allow loading multiple renderers in a suite), but makes sure to run this in CI as well. * unneeded (and wrong) comment * run the dom fixture on CI * update the sigil only in __DEV__ * remove the obnoxious comment * use an explicit export for the sigil
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Sunil Pai
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May 29, 2019
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,45 +1,44 @@ | ||
| <!DOCTYPE html> | ||
| <html> | ||
| <head> | ||
| <title>sanity test for ReactTestUtils.act</title> | ||
| </head> | ||
| <body> | ||
| this page tests whether act runs properly in a browser. | ||
| <br/> | ||
| your console should say "5" | ||
| <script src='scheduler-unstable_mock.development.js'></script> | ||
| <script src='react.development.js'></script> | ||
| <script type="text/javascript"> | ||
| window.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler = window.SchedulerMock | ||
| </script> | ||
| <script src='react-dom.development.js'></script> | ||
| <script src='react-dom-test-utils.development.js'></script> | ||
| <script> | ||
| async function run(){ | ||
| <head> | ||
| <title>sanity test for ReactTestUtils.act</title> | ||
| </head> | ||
| <body> | ||
| this page tests whether act runs properly in a browser. | ||
| <br /> | ||
| your console should say "5" | ||
| <script src="scheduler-unstable_mock.development.js"></script> | ||
| <script src="react.development.js"></script> | ||
| <script type="text/javascript"> | ||
| window.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler = | ||
| window.SchedulerMock; | ||
| </script> | ||
| <script src="react-dom.development.js"></script> | ||
| <script src="react-dom-test-utils.development.js"></script> | ||
| <script> | ||
| // from ReactTestUtilsAct-test.js | ||
| function App() { | ||
| let [state, setState] = React.useState(0); | ||
| async function ticker() { | ||
| await null; | ||
| setState(x => x + 1); | ||
| } | ||
| React.useEffect( | ||
| () => { | ||
| ticker(); | ||
| }, | ||
| [Math.min(state, 4)], | ||
| ); | ||
| React.useEffect(() => { | ||
| ticker(); | ||
| }, [Math.min(state, 4)]); | ||
| return state; | ||
| } | ||
| const el = document.createElement('div'); | ||
| await ReactTestUtils.act(async () => { | ||
| ReactDOM.render(React.createElement(App), el); | ||
| }); | ||
| // all 5 ticks present and accounted for | ||
| console.log(el.innerHTML); | ||
| } | ||
| run(); | ||
|
|
||
| </script> | ||
| </body> | ||
|
|
||
| async function testAsyncAct() { | ||
| const el = document.createElement("div"); | ||
| await ReactTestUtils.act(async () => { | ||
| ReactDOM.render(React.createElement(App), el); | ||
| }); | ||
| // all 5 ticks present and accounted for | ||
| console.log(el.innerHTML); | ||
| } | ||
|
|
||
| testAsyncAct(); | ||
| </script> | ||
| </body> | ||
| </html> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /** | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| * | ||
| * @emails react-core | ||
| */ | ||
|
|
||
| import React from 'react'; | ||
| import ReactDOM from 'react-dom'; | ||
| import TestUtils from 'react-dom/test-utils'; | ||
| import TestRenderer from 'react-test-renderer'; | ||
|
|
||
| let spy; | ||
| beforeEach(() => { | ||
| spy = jest.spyOn(console, 'error').mockImplementation(() => {}); | ||
| }); | ||
|
|
||
| function confirmWarning() { | ||
| expect(spy).toHaveBeenCalledWith( | ||
| expect.stringContaining( | ||
| "It looks like you're using the wrong act() around your test interactions." | ||
| ), | ||
| '' | ||
| ); | ||
| } | ||
|
|
||
| function App(props) { | ||
| return 'hello world'; | ||
| } | ||
|
|
||
| it("doesn't warn when you use the right act + renderer: dom", () => { | ||
| TestUtils.act(() => { | ||
| TestUtils.renderIntoDocument(<App />); | ||
| }); | ||
| expect(spy).not.toHaveBeenCalled(); | ||
| }); | ||
|
|
||
| it("doesn't warn when you use the right act + renderer: test", () => { | ||
| TestRenderer.act(() => { | ||
| TestRenderer.create(<App />); | ||
| }); | ||
| expect(spy).not.toHaveBeenCalled(); | ||
| }); | ||
|
|
||
| it('works with createRoot().render combo', () => { | ||
| const root = ReactDOM.unstable_createRoot(document.createElement('div')); | ||
| TestRenderer.act(() => { | ||
| root.render(<App />); | ||
| }); | ||
| confirmWarning(); | ||
| }); | ||
|
|
||
| it('warns when using the wrong act version - test + dom: render', () => { | ||
| TestRenderer.act(() => { | ||
| TestUtils.renderIntoDocument(<App />); | ||
| }); | ||
| confirmWarning(); | ||
| }); | ||
|
|
||
| it('warns when using the wrong act version - test + dom: updates', () => { | ||
| let setCtr; | ||
| function Counter(props) { | ||
| const [ctr, _setCtr] = React.useState(0); | ||
| setCtr = _setCtr; | ||
| return ctr; | ||
| } | ||
| TestUtils.renderIntoDocument(<Counter />); | ||
| TestRenderer.act(() => { | ||
| setCtr(1); | ||
| }); | ||
| confirmWarning(); | ||
| }); | ||
|
|
||
| it('warns when using the wrong act version - dom + test: .create()', () => { | ||
| TestUtils.act(() => { | ||
| TestRenderer.create(<App />); | ||
| }); | ||
| confirmWarning(); | ||
| }); | ||
|
|
||
| it('warns when using the wrong act version - dom + test: .update()', () => { | ||
| let root; | ||
| // use the right one here so we don't get the first warning | ||
| TestRenderer.act(() => { | ||
| root = TestRenderer.create(<App key="one" />); | ||
| }); | ||
| TestUtils.act(() => { | ||
| root.update(<App key="two" />); | ||
| }); | ||
| confirmWarning(); | ||
| }); | ||
|
|
||
| it('warns when using the wrong act version - dom + test: updates', () => { | ||
| let setCtr; | ||
| function Counter(props) { | ||
| const [ctr, _setCtr] = React.useState(0); | ||
| setCtr = _setCtr; | ||
| return ctr; | ||
| } | ||
| const root = TestRenderer.create(<Counter />); | ||
| TestUtils.act(() => { | ||
| setCtr(1); | ||
| }); | ||
| confirmWarning(); | ||
| }); |
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