wp-calypso/client/test-helpers/console/index.js

export const captureConsole =
	( testFn ) =>
	( callback = () => {} ) => {
		const original = globalThis.console;
		const replacement = {
			log: jest.fn(),
			warn: jest.fn(),
			error: jest.fn(),
		};
		globalThis.console = replacement;
		let val;
		try {
			val = testFn();
		} finally {
			globalThis.console = original;
		}
		callback( replacement );
		return val;
	};