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Moved lifecycle deprecation warnings behind (disabled) feature flag
Updated tests accordingly, by temporarily splitting tests that were specific to this feature-flag into their own, internal tests. This was the only way I knew of to interact with the feature flag without breaking our build/dist tests.
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packages/react-dom/src/__tests__/ReactComponentLifeCycle-test.internal.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| /** | ||
| * Copyright (c) 2013-present, Facebook, Inc. | ||
| * | ||
| * 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 | ||
| */ | ||
|
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| 'use strict'; | ||
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| let React; | ||
| let ReactDOM; | ||
| let ReactFeatureFlags; | ||
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| /** | ||
| * TODO: We should make any setState calls fail in | ||
| * `getInitialState` and `componentWillMount`. They will usually fail | ||
| * anyways because `this._renderedComponent` is empty, however, if a component | ||
| * is *reused*, then that won't be the case and things will appear to work in | ||
| * some cases. Better to just block all updates in initialization. | ||
| */ | ||
| describe('ReactComponentLifeCycle', () => { | ||
| beforeEach(() => { | ||
| jest.resetModules(); | ||
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| ReactFeatureFlags = require('shared/ReactFeatureFlags'); | ||
| ReactFeatureFlags.warnAboutDeprecatedLifecycles = true; | ||
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| React = require('react'); | ||
| ReactDOM = require('react-dom'); | ||
| }); | ||
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| // TODO (RFC #6) Merge this back into ReactComponentLifeCycles-test once | ||
| // the 'warnAboutDeprecatedLifecycles' feature flag has been removed. | ||
| it('warns about deprecated unsafe lifecycles', function() { | ||
| class MyComponent extends React.Component { | ||
| componentWillMount() {} | ||
| componentWillReceiveProps() {} | ||
| componentWillUpdate() {} | ||
| render() { | ||
| return null; | ||
| } | ||
| } | ||
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| const container = document.createElement('div'); | ||
| expect(() => ReactDOM.render(<MyComponent x={1} />, container)).toWarnDev([ | ||
| 'Warning: MyComponent: componentWillMount() is deprecated and will be ' + | ||
| 'removed in the next major version. ' + | ||
| 'Please use UNSAFE_componentWillMount() instead.', | ||
| ]); | ||
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| expect(() => ReactDOM.render(<MyComponent x={2} />, container)).toWarnDev([ | ||
| 'Warning: MyComponent: componentWillReceiveProps() is deprecated and ' + | ||
| 'will be removed in the next major version. ' + | ||
| 'Please use UNSAFE_componentWillReceiveProps() instead.', | ||
| 'Warning: MyComponent: componentWillUpdate() is deprecated and will be ' + | ||
| 'removed in the next major version. ' + | ||
| 'Please use UNSAFE_componentWillUpdate() instead.', | ||
| ]); | ||
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| // Dedupe check (instantiate and update) | ||
| ReactDOM.render(<MyComponent key="new" x={1} />, container); | ||
| ReactDOM.render(<MyComponent key="new" x={2} />, container); | ||
| }); | ||
| }); |
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43
packages/react-dom/src/__tests__/ReactDOMServerLifecycles-test.internal.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| /** | ||
| * Copyright (c) 2013-present, Facebook, Inc. | ||
| * | ||
| * 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 | ||
| */ | ||
|
|
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| 'use strict'; | ||
|
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| let React; | ||
| let ReactFeatureFlags; | ||
| let ReactDOMServer; | ||
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| describe('ReactDOMServerLifecycles', () => { | ||
| beforeEach(() => { | ||
| ReactFeatureFlags = require('shared/ReactFeatureFlags'); | ||
| ReactFeatureFlags.warnAboutDeprecatedLifecycles = true; | ||
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| React = require('react'); | ||
| ReactDOMServer = require('react-dom/server'); | ||
| }); | ||
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| // TODO (RFC #6) Merge this back into ReactDOMServerLifecycles-test once | ||
| // the 'warnAboutDeprecatedLifecycles' feature flag has been removed. | ||
| it('should warn about deprecated lifecycle hooks', () => { | ||
| class Component extends React.Component { | ||
| componentWillMount() {} | ||
| render() { | ||
| return null; | ||
| } | ||
| } | ||
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| expect(() => ReactDOMServer.renderToString(<Component />)).toWarnDev( | ||
| 'Warning: Component: componentWillMount() is deprecated and will be removed ' + | ||
| 'in the next major version. Please use UNSAFE_componentWillMount() instead.', | ||
| ); | ||
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| // De-duped | ||
| ReactDOMServer.renderToString(<Component />); | ||
| }); | ||
| }); |
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