const { execSync } = require('child_process') it('will show a message if the file contains a syntax error', () => { try { const stdout = execSync( 'npm run channels:lint -- tests/__data__/input/sites/lint.channels.xml', { encoding: 'utf8' } ) console.log(stdout) process.exit(1) } catch (err) { expect(err.status).toBe(1) expect(err.stdout).toBe( `\n> channels:lint\n> node scripts/commands/channels/lint.js tests/__data__/input/sites/lint.channels.xml\n\n\ntests/__data__/input/sites/lint.channels.xml\n 4:0 Element 'channel': The attribute 'lang' is required but missing.\n\n1 error(s)\n` ) } })