forked from facebook/react
/
console-test.js
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console-test.js
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/**
* 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.
*
* @flow
*/
describe('console', () => {
let React;
let ReactDOM;
let act;
let fakeConsole;
let mockError;
let mockInfo;
let mockLog;
let mockWarn;
let patchConsole;
let unpatchConsole;
beforeEach(() => {
jest.resetModules();
const Console = require('react-devtools-shared/src/backend/console');
patchConsole = Console.patch;
unpatchConsole = Console.unpatch;
// Patch a fake console so we can verify with tests below.
// Patching the real console is too complicated,
// because Jest itself has hooks into it as does our test env setup.
mockError = jest.fn();
mockInfo = jest.fn();
mockLog = jest.fn();
mockWarn = jest.fn();
fakeConsole = {
error: mockError,
info: mockInfo,
log: mockLog,
warn: mockWarn,
};
Console.dangerous_setTargetConsoleForTesting(fakeConsole);
// Note the Console module only patches once,
// so it's important to patch the test console before injection.
patchConsole();
const inject = global.__REACT_DEVTOOLS_GLOBAL_HOOK__.inject;
global.__REACT_DEVTOOLS_GLOBAL_HOOK__.inject = internals => {
inject(internals);
Console.registerRenderer(internals);
};
React = require('react');
ReactDOM = require('react-dom');
const utils = require('./utils');
act = utils.act;
});
function normalizeCodeLocInfo(str) {
return (
str &&
str.replace(/\n +(?:at|in) ([\S]+)[^\n]*/g, function(m, name) {
return '\n in ' + name + ' (at **)';
})
);
}
it('should not patch console methods that do not receive component stacks', () => {
expect(fakeConsole.error).not.toBe(mockError);
expect(fakeConsole.info).toBe(mockInfo);
expect(fakeConsole.log).toBe(mockLog);
expect(fakeConsole.warn).not.toBe(mockWarn);
});
it('should only patch the console once', () => {
const {error, warn} = fakeConsole;
patchConsole();
expect(fakeConsole.error).toBe(error);
expect(fakeConsole.warn).toBe(warn);
});
it('should un-patch when requested', () => {
expect(fakeConsole.error).not.toBe(mockError);
expect(fakeConsole.warn).not.toBe(mockWarn);
unpatchConsole();
expect(fakeConsole.error).toBe(mockError);
expect(fakeConsole.warn).toBe(mockWarn);
});
it('should pass through logs when there is no current fiber', () => {
expect(mockLog).toHaveBeenCalledTimes(0);
expect(mockWarn).toHaveBeenCalledTimes(0);
expect(mockError).toHaveBeenCalledTimes(0);
fakeConsole.log('log');
fakeConsole.warn('warn');
fakeConsole.error('error');
expect(mockLog).toHaveBeenCalledTimes(1);
expect(mockLog.mock.calls[0]).toHaveLength(1);
expect(mockLog.mock.calls[0][0]).toBe('log');
expect(mockWarn).toHaveBeenCalledTimes(1);
expect(mockWarn.mock.calls[0]).toHaveLength(1);
expect(mockWarn.mock.calls[0][0]).toBe('warn');
expect(mockError).toHaveBeenCalledTimes(1);
expect(mockError.mock.calls[0]).toHaveLength(1);
expect(mockError.mock.calls[0][0]).toBe('error');
});
it('should not append multiple stacks', () => {
const Child = () => {
fakeConsole.warn('warn\n in Child (at fake.js:123)');
fakeConsole.error('error', '\n in Child (at fake.js:123)');
return null;
};
act(() => ReactDOM.render(<Child />, document.createElement('div')));
expect(mockWarn).toHaveBeenCalledTimes(1);
expect(mockWarn.mock.calls[0]).toHaveLength(1);
expect(mockWarn.mock.calls[0][0]).toBe(
'warn\n in Child (at fake.js:123)',
);
expect(mockError).toHaveBeenCalledTimes(1);
expect(mockError.mock.calls[0]).toHaveLength(2);
expect(mockError.mock.calls[0][0]).toBe('error');
expect(mockError.mock.calls[0][1]).toBe('\n in Child (at fake.js:123)');
});
it('should append component stacks to errors and warnings logged during render', () => {
const Intermediate = ({children}) => children;
const Parent = () => (
<Intermediate>
<Child />
</Intermediate>
);
const Child = () => {
fakeConsole.error('error');
fakeConsole.log('log');
fakeConsole.warn('warn');
return null;
};
act(() => ReactDOM.render(<Parent />, document.createElement('div')));
expect(mockLog).toHaveBeenCalledTimes(1);
expect(mockLog.mock.calls[0]).toHaveLength(1);
expect(mockLog.mock.calls[0][0]).toBe('log');
expect(mockWarn).toHaveBeenCalledTimes(1);
expect(mockWarn.mock.calls[0]).toHaveLength(2);
expect(mockWarn.mock.calls[0][0]).toBe('warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[0][1])).toEqual(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockError).toHaveBeenCalledTimes(1);
expect(mockError.mock.calls[0]).toHaveLength(2);
expect(mockError.mock.calls[0][0]).toBe('error');
expect(normalizeCodeLocInfo(mockError.mock.calls[0][1])).toBe(
'\n in Child (at **)\n in Parent (at **)',
);
});
it('should append component stacks to errors and warnings logged from effects', () => {
const Intermediate = ({children}) => children;
const Parent = () => (
<Intermediate>
<Child />
</Intermediate>
);
const Child = () => {
React.useLayoutEffect(() => {
fakeConsole.error('active error');
fakeConsole.log('active log');
fakeConsole.warn('active warn');
});
React.useEffect(() => {
fakeConsole.error('passive error');
fakeConsole.log('passive log');
fakeConsole.warn('passive warn');
});
return null;
};
act(() => ReactDOM.render(<Parent />, document.createElement('div')));
expect(mockLog).toHaveBeenCalledTimes(2);
expect(mockLog.mock.calls[0]).toHaveLength(1);
expect(mockLog.mock.calls[0][0]).toBe('active log');
expect(mockLog.mock.calls[1]).toHaveLength(1);
expect(mockLog.mock.calls[1][0]).toBe('passive log');
expect(mockWarn).toHaveBeenCalledTimes(2);
expect(mockWarn.mock.calls[0]).toHaveLength(2);
expect(mockWarn.mock.calls[0][0]).toBe('active warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[0][1])).toEqual(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockWarn.mock.calls[1]).toHaveLength(2);
expect(mockWarn.mock.calls[1][0]).toBe('passive warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[1][1])).toEqual(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockError).toHaveBeenCalledTimes(2);
expect(mockError.mock.calls[0]).toHaveLength(2);
expect(mockError.mock.calls[0][0]).toBe('active error');
expect(normalizeCodeLocInfo(mockError.mock.calls[0][1])).toBe(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockError.mock.calls[1]).toHaveLength(2);
expect(mockError.mock.calls[1][0]).toBe('passive error');
expect(normalizeCodeLocInfo(mockError.mock.calls[1][1])).toBe(
'\n in Child (at **)\n in Parent (at **)',
);
});
it('should append component stacks to errors and warnings logged from commit hooks', () => {
const Intermediate = ({children}) => children;
const Parent = () => (
<Intermediate>
<Child />
</Intermediate>
);
class Child extends React.Component<any> {
componentDidMount() {
fakeConsole.error('didMount error');
fakeConsole.log('didMount log');
fakeConsole.warn('didMount warn');
}
componentDidUpdate() {
fakeConsole.error('didUpdate error');
fakeConsole.log('didUpdate log');
fakeConsole.warn('didUpdate warn');
}
render() {
return null;
}
}
const container = document.createElement('div');
act(() => ReactDOM.render(<Parent />, container));
act(() => ReactDOM.render(<Parent />, container));
expect(mockLog).toHaveBeenCalledTimes(2);
expect(mockLog.mock.calls[0]).toHaveLength(1);
expect(mockLog.mock.calls[0][0]).toBe('didMount log');
expect(mockLog.mock.calls[1]).toHaveLength(1);
expect(mockLog.mock.calls[1][0]).toBe('didUpdate log');
expect(mockWarn).toHaveBeenCalledTimes(2);
expect(mockWarn.mock.calls[0]).toHaveLength(2);
expect(mockWarn.mock.calls[0][0]).toBe('didMount warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[0][1])).toEqual(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockWarn.mock.calls[1]).toHaveLength(2);
expect(mockWarn.mock.calls[1][0]).toBe('didUpdate warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[1][1])).toEqual(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockError).toHaveBeenCalledTimes(2);
expect(mockError.mock.calls[0]).toHaveLength(2);
expect(mockError.mock.calls[0][0]).toBe('didMount error');
expect(normalizeCodeLocInfo(mockError.mock.calls[0][1])).toBe(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockError.mock.calls[1]).toHaveLength(2);
expect(mockError.mock.calls[1][0]).toBe('didUpdate error');
expect(normalizeCodeLocInfo(mockError.mock.calls[1][1])).toBe(
'\n in Child (at **)\n in Parent (at **)',
);
});
it('should append component stacks to errors and warnings logged from gDSFP', () => {
const Intermediate = ({children}) => children;
const Parent = () => (
<Intermediate>
<Child />
</Intermediate>
);
class Child extends React.Component<any, any> {
state = {};
static getDerivedStateFromProps() {
fakeConsole.error('error');
fakeConsole.log('log');
fakeConsole.warn('warn');
return null;
}
render() {
return null;
}
}
act(() => ReactDOM.render(<Parent />, document.createElement('div')));
expect(mockLog).toHaveBeenCalledTimes(1);
expect(mockLog.mock.calls[0]).toHaveLength(1);
expect(mockLog.mock.calls[0][0]).toBe('log');
expect(mockWarn).toHaveBeenCalledTimes(1);
expect(mockWarn.mock.calls[0]).toHaveLength(2);
expect(mockWarn.mock.calls[0][0]).toBe('warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[0][1])).toEqual(
'\n in Child (at **)\n in Parent (at **)',
);
expect(mockError).toHaveBeenCalledTimes(1);
expect(mockError.mock.calls[0]).toHaveLength(2);
expect(mockError.mock.calls[0][0]).toBe('error');
expect(normalizeCodeLocInfo(mockError.mock.calls[0][1])).toBe(
'\n in Child (at **)\n in Parent (at **)',
);
});
it('should append stacks after being uninstalled and reinstalled', () => {
const Child = () => {
fakeConsole.warn('warn');
fakeConsole.error('error');
return null;
};
unpatchConsole();
act(() => ReactDOM.render(<Child />, document.createElement('div')));
expect(mockWarn).toHaveBeenCalledTimes(1);
expect(mockWarn.mock.calls[0]).toHaveLength(1);
expect(mockWarn.mock.calls[0][0]).toBe('warn');
expect(mockError).toHaveBeenCalledTimes(1);
expect(mockError.mock.calls[0]).toHaveLength(1);
expect(mockError.mock.calls[0][0]).toBe('error');
patchConsole();
act(() => ReactDOM.render(<Child />, document.createElement('div')));
expect(mockWarn).toHaveBeenCalledTimes(2);
expect(mockWarn.mock.calls[1]).toHaveLength(2);
expect(mockWarn.mock.calls[1][0]).toBe('warn');
expect(normalizeCodeLocInfo(mockWarn.mock.calls[1][1])).toEqual(
'\n in Child (at **)',
);
expect(mockError).toHaveBeenCalledTimes(2);
expect(mockError.mock.calls[1]).toHaveLength(2);
expect(mockError.mock.calls[1][0]).toBe('error');
expect(normalizeCodeLocInfo(mockError.mock.calls[1][1])).toBe(
'\n in Child (at **)',
);
});
});