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import React from 'react';
import { render } from '@testing-library/react';
import { devUseWarning as useWarning } from '../warning';
describe('Test warning', () => {
let spy: jest.SpyInstance;
beforeAll(() => {
spy = jest.spyOn(console, 'error').mockImplementation(() => {});
});
afterAll(() => {
spy.mockRestore();
});
beforeEach(() => {
jest.resetModules();
});
afterEach(() => {
spy.mockReset();
});
it('Test noop', async () => {
const { noop } = await import('../warning');
const value = noop();
expect(value).toBe(undefined);
expect(spy).not.toHaveBeenCalled();
expect(noop).not.toThrow();
});
describe('process.env.NODE_ENV !== "production"', () => {
it('If `false`, exec `console.error`', async () => {
const warning = (await import('../warning')).default;
warning(false, 'error');
expect(spy).toHaveBeenCalled();
});
it('If `true`, do not exec `console.error`', async () => {
const warning = (await import('../warning')).default;
warning(true, 'error message');
expect(spy).not.toHaveBeenCalled();
});
it('should show warning when using devUseWarning', async () => {
const App = () => {
// Don't use dynamic import to fixed issue: TypeError: Cannot read properties of null (reading 'useContext')
const warning = useWarning('Test');
warning(false, 'usage', 'test message');
warning.deprecated(false, 'old prop', 'new prop');
return null;
};
render(<App />);
expect(spy).toHaveBeenCalledWith('Warning: [antd: Test] test message');
expect(spy).toHaveBeenCalledWith(
'Warning: [antd: Test] `old prop` is deprecated. Please use `new prop` instead.',
);
expect(spy).toHaveBeenCalledTimes(2);
});
});
describe('process.env.NODE_ENV === "production"', () => {
let prevEnv: string | undefined;
const mockNodeEnv = () => {
prevEnv = process.env.NODE_ENV;
process.env.NODE_ENV = 'production';
};
const restoreNodeEnv = () => {
process.env.NODE_ENV = prevEnv;
};
beforeEach(() => {
mockNodeEnv();
});
afterEach(() => {
restoreNodeEnv();
});
it('Whether `true` or `false`, do not exec `console.error`', async () => {
const { default: warning, noop } = await import('../warning');
expect(warning).toEqual(noop);
warning(false, 'error message');
expect(spy).not.toHaveBeenCalled();
warning(true, 'error message');
expect(spy).not.toHaveBeenCalled();
});
it('should not show warning when using devUseWarning', async () => {
const { devUseWarning } = await import('../warning');
const App = () => {
const warning = devUseWarning('Test');
warning(false, 'usage', 'test message');
warning.deprecated(false, 'old prop', 'new prop');
return null;
};
render(<App />);
expect(spy).toHaveBeenCalledTimes(0);
});
});
});
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