摩卡：以编程方式创build并完成testing

我想要代理testing结果在其他环境上实时运行。

下面是一些我想实现的伪代码：

var test = proxy.getCurrentTest(); // => {slow: 200, timeout: 2000, duration: 235, result: 'error'}; var tmpIt = it('test1', function(){ this.slow(test.slow); this.timeout(test.timeout); }); tmpIt.close({ duration: test.duration, result: test.result }); // this should make this test red in the output, // because the `result` is not 'success' 

无论如何设置testing的结果和持续时间没有“真正”运行吗？ 并获得所有的视觉摩卡输出到terminal？

编辑：这个问题不是关于如何将testing结果forms的subprocess传递给主进程。 它已经在为我工作。

Answer 1

希望我正确理解这些要求。 我所实施的是将摩卡咖啡整合到摩卡咖啡中的testing结果。

为了与mocha集成，这个实现描述了一个自定义的mocha接口来代理在另一个环境中执行的testing的testing结果。

为了使用这个接口，在运行摩卡时必须将-uparameter passing给摩卡

 > mocha -u ./path/to/proxy-interface ... 

请注意./path/to/proxy-interface是mocha在require调用中要求接口模块的path。

代理接口负责向mocha的BDD接口这样的全局上下文提供一个proxyTest函数，调用传递的函数获取testing结果并转发testing结果，同时保留testing运行器显示的执行testing的数量。

 var Mocha = require('mocha'); var Suite = Mocha.Suite; var Test = Mocha.Test; var escapeRe = require('escape-string-regexp'); module.exports = function(suite) { var suites = [suite]; suite.on('pre-require', function(context, file, mocha) { // A bit hacky since we require mocha internal common interface module var common = require('mocha/lib/interfaces/common')(suites, context); context.run = mocha.options.delay && common.runWithSuite(suite); context.proxyTest = function(title, fn) { var suite = suites[0]; if (suite.pending) { fn = null; } var test = new ProxyTest(title, fn); test.file = file; suite.addTest(test); return test; }; }); }; var Runnable = Mocha.Runnable; var inherits = require('util').inherits; function ProxyTest(title, fn) { Runnable.call(this, title, null); this.pending = !fn; this.type = 'test'; this.body = (fn || '').toString(); this.fn = fn; } inherits(ProxyTest, Runnable); ProxyTest.prototype.run = function(done) { var proxiedTestResult = this.fn(); this.duration = proxiedTestResult.duration; this.timedOut = this.timeout() > proxiedTestResult.timeout; done(proxiedTestResult.result); }; ProxyTest.prototype.clone = function() { var test = new ProxyTest(this.title, this.fn); test.timeout(this.timeout()); test.slow(this.slow()); test.enableTimeouts(this.enableTimeouts()); test.retries(this.retries()); test.currentRetry(this.currentRetry()); test.globals(this.globals()); test.parent = this.parent; test.file = this.file; test.ctx = this.ctx; return test; }; 

上面的代码覆盖了Mocha的Runnable运行实现，并运行传递的函数来获取testing结果，并将ProxyTest接口中的必需字段设置为与mochatesting兼容。

用法

在你的testing中，使用proxyTest global来注册一个新的mochatesting

 var proxy = { getErrorTestResult() { return {slow: 200, timeout: 2000, duration: 50, result: 'error'}; }, getTimeoutTestResult() { return {slow: 200, timeout: 2000, duration: 3000 }; }, getSlowTestResult() { return {slow: 200, timeout: 2000, duration: 235 }; }, getSuccessTestResult() { return {slow: 200, timeout: 2000, duration: 50 }; } } proxyTest('error', proxy.getErrorTestResult); proxyTest('timeout', proxy.getTimeoutTestResult); proxyTest('slow', proxy.getSlowTestResult); proxyTest('success', proxy.getSuccessTestResult); 

产量

启示

这种方法的缺点是一个自定义接口必须传递给摩卡，并且你不能使用摩卡BDD词汇表像describe 。 第二个缺点可以消除，如果你“扩展”（在这种情况下：复制一些代码）摩卡的BDD接口：

 var Mocha = require('mocha'); /** * Module dependencies. */ var Suite = Mocha.Suite; var Test = Mocha.Test; var escapeRe = require('escape-string-regexp'); /** * BDD-style interface - extended with proxy functionality: * * describe('Array', function() { * describe('#indexOf()', function() { * it('should return -1 when not present', function() { * // ... * }); * * it('should return the index when present', function() { * // ... * }); * }); * }); * * @param {Suite} suite Root suite. */ module.exports = function(suite) { var suites = [suite]; suite.on('pre-require', function(context, file, mocha) { // A bit hacky since we require mocha internal common interface module var common = require('mocha/lib/interfaces/common')(suites, context); context.before = common.before; context.after = common.after; context.beforeEach = common.beforeEach; context.afterEach = common.afterEach; context.run = mocha.options.delay && common.runWithSuite(suite); /** * Describe a "suite" with the given `title` * and callback `fn` containing nested suites * and/or tests. */ context.describe = context.context = function(title, fn) { var suite = Suite.create(suites[0], title); suite.file = file; suites.unshift(suite); fn.call(suite); suites.shift(); return suite; }; /** * Pending describe. */ context.xdescribe = context.xcontext = context.describe.skip = function(title, fn) { var suite = Suite.create(suites[0], title); suite.pending = true; suites.unshift(suite); fn.call(suite); suites.shift(); }; /** * Exclusive suite. */ context.describe.only = function(title, fn) { var suite = context.describe(title, fn); mocha.grep(suite.fullTitle()); return suite; }; /** * Describe a specification or test-case * with the given `title` and callback `fn` * acting as a thunk. */ var it = context.it = context.specify = function(title, fn) { var suite = suites[0]; if (suite.pending) { fn = null; } var test = new Test(title, fn); test.file = file; suite.addTest(test); return test; }; /** * Exclusive test-case. */ context.it.only = function(title, fn) { var test = it(title, fn); var reString = '^' + escapeRe(test.fullTitle()) + '$'; mocha.grep(new RegExp(reString)); return test; }; /** * Pending test case. */ context.xit = context.xspecify = context.it.skip = function(title) { context.it(title); }; /** * Number of attempts to retry. */ context.it.retries = function(n) { context.retries(n); }; context.proxyTest = function(title, fn) { var suite = suites[0]; if (suite.pending) { fn = null; } var test = new ProxyTest(title, fn); test.file = file; suite.addTest(test); return test; }; }); }; var Runnable = Mocha.Runnable; var inherits = require('util').inherits; function ProxyTest(title, fn) { Runnable.call(this, title, null); this.pending = !fn; this.type = 'test'; this.body = (fn || '').toString(); this.fn = fn; } inherits(ProxyTest, Runnable); ProxyTest.prototype.run = function(done) { var proxiedTestResult = this.fn(); this.duration = proxiedTestResult.duration; this.timedOut = this.timeout() > proxiedTestResult.timeout; done(proxiedTestResult.result); }; ProxyTest.prototype.clone = function() { var test = new ProxyTest(this.title, this.fn); test.timeout(this.timeout()); test.slow(this.slow()); test.enableTimeouts(this.enableTimeouts()); test.retries(this.retries()); test.currentRetry(this.currentRetry()); test.globals(this.globals()); test.parent = this.parent; test.file = this.file; test.ctx = this.ctx; return test; };