hae-uitest/lib/invokeMocha.js

A UI Test Framework for Huawei HAE

//run the test scripts in mocha via invoking child_process

var spawn = require('child_process').spawn;

module.exports = function(args, callback) {
	//启用子进程调用  mocha
	var proc = spawn('node', args);
	var report = [];
	var err = [];

	//抓取测试报告
	proc.stdout.on('data', function(data) {
		report.push(data);
	});

	//抓取错误信息
	proc.stderr.on('data', function(data) {
		err.push(data);
	});

	//子进程结束时返回结果
	proc.on('exit', function (code, signal) {
		report = report.join('');		
		err = err.join('');
		
		if ('' === report && '' === err) {
			err = 'faild to obtain output of the child process.';
		}

		callback(err, report);

		process.on('exit', function(){
			if (signal) {
				process.kill(process.pid, signal);
			} else {
				process.exit(code);
			}
		});
	}); 
}