'use strict'; const common = require('../common'); const assert = require('assert'); const { exec } = require('child_process'); const node = process.execPath; // should throw if -c and -e flags are both passed ['-c', '--check'].forEach(function(checkFlag) { ['-e', '--eval'].forEach(function(evalFlag) { const args = [checkFlag, evalFlag, 'foo']; const cmd = [node, ...args].join(' '); exec(cmd, common.mustCall((err, stdout, stderr) => { assert.strictEqual(err instanceof Error, true); assert.strictEqual(err.code, 9); assert( stderr.startsWith( `${node}: either --check or --eval can be used, not both` ) ); })); }); });