import cleanErrorStack from './cleanErrorStack'; describe('Clean Error Stack', () => { const testMessage = 'Test Message'; const testError = new Error(testMessage); const undefinedErrorName = new Error(testMessage); const blankErrorName = new Error(testMessage); const blankMsgError = new Error(); beforeEach(() => { undefinedErrorName.name = undefined; blankErrorName.name = ''; }); it('tests error with message', () => { expect(cleanErrorStack(testError).toString()).toStrictEqual( 'Error: Test Message', ); }); it('tests error with undefined name', () => { expect(cleanErrorStack(undefinedErrorName).toString()).toStrictEqual( 'Error: Test Message', ); }); it('tests error with blank name', () => { expect(cleanErrorStack(blankErrorName).toString()).toStrictEqual( 'Test Message', ); }); it('tests error with blank message', () => { expect(cleanErrorStack(blankMsgError).toString()).toStrictEqual('Error'); }); });