Sometimes, we want to disable console inside unit tests with Jest.
In this article, we’ll look at how to disable console inside unit tests with Jest.
How to disable console inside unit tests with Jest?
To disable console inside unit tests with Jest, we can use the --silent option or set the console methods to mocked functions.
For instance, we run
jest --silent
to run jest with the --silient to disable console output when running tests.
Or we can create a tests/setup.js file with
global.console = {
...console,
log: jest.fn(),
debug: jest.fn(),
info: jest.fn(),
warn: jest.fn(),
error: jest.fn(),
};
to set all the console methods to mocked functions.
And then we can use the config by writing
module.exports = {
verbose: true,
setupFilesAfterEnv: ["<rootDir>/__tests__/setup.js"],
};
to add tests/setup.js to the setupFilesAfterEnv array in jest.config.js to load that when running tests.
Conclusion
To disable console inside unit tests with Jest, we can use the --silent option or set the console methods to mocked functions.
