我试图动态运行一系列测试。我有以下设置，但它似乎没有运行，我没有收到任何错误：
import Mocha from 'mocha';
const Test = Mocha.Test;
const Suite = Mocha.Suite;
const mocha = new Mocha();
for (let s in tests) {
let suite = Suite.create(mocha.suite, s);
tests[s].forEach((test) => {
console.log('add test', test.name)
suite.addTest(new Test(test.name), () => {
expect(1+1).to.equal(2);
});
});
}
mocha.run();
tests我正在运行，如下所示：
{ todo:
[ { name: 'POST /todos',
should: 'create a new todo',
method: 'POST',
endpoint: '/todos',
body: [Object] } ] }
（虽然此时我的测试只是试图检查一个基本的期望）
基于console.logs，迭代看起来很好，似乎是在添加测试，因此我对操作流程充满信心，我无法获得任何执行或错误。
答案 0 :(得分：5)
您必须将测试函数传递给MS构造函数，而不是Test。因此，更改代码以添加如下测试：
suite.addTest以下是我正在运行的整个代码，改编自您的问题：
suite.addTest(new Test(test.name, () => {
expect(1+1).to.equal(2);
}));
当我使用import Mocha from 'mocha';
import { expect } from 'chai';
const Test = Mocha.Test;
const Suite = Mocha.Suite;
const mocha = new Mocha();
var tests = { todo:
[ { name: 'POST /todos',
should: 'create a new todo',
method: 'POST',
endpoint: '/todos',
body: [Object] } ] };
for (let s in tests) {
let suite = Suite.create(mocha.suite, s);
tests[s].forEach((test) => {
console.log('add test', test.name);
suite.addTest(new Test(test.name, () => {
expect(1+1).to.equal(2);
}));
});
}
mocha.run();
运行上述内容时，我得到输出：
node_modules/.bin/babel-node test.es6答案 1 :(得分：2)
测试您的测试系统并确保它处理传递和失败测试以及抛出异常是至关重要的。
由于人们指望构建过程警告他们错误，因此如果出现任何故障，还必须将退出代码设置为非零。
下面是一个测试脚本（您必须使用node test.js调用而不是mocha test.js）来测试测试套件中的所有路径：
const Mocha = require('mocha')
const expect = require('chai').expect
var testRunner = new Mocha()
var testSuite = Mocha.Suite.create(testRunner.suite, 'Dynamic tests')
var tests = [ // Define some tasks to add to test suite.
{ name: 'POST /todos', f: () => true }, // Pass a test.
{ name: 'GET /nonos', f: () => false }, // Fail a test.
{ name: 'HEAD /hahas', f: () => { throw Error(0) } } // Throw an error.
]
tests.forEach(
test =>
// Create a test which value errors and caught exceptions.
testSuite.addTest(new Mocha.Test(test.name, function () {
expect(test.f()).to.be.true
}))
)
var suiteRun = testRunner.run() // Run the tests
process.on('exit', (code) => { // and set exit code.
process.exit(suiteRun.stats.failures > 0) // Non-zero exit indicates errors.
}) // Falling off end waits for Mocha events to finish.
鉴于这在异步mocha测试的网页搜索中非常突出，我将提供一些更有用的模板供人们复制。
嵌入式执行：第一个直接添加调用异步虚拟网络调用的测试，并在.then中检查结果：
const Mocha = require('mocha')
const expect = require('chai').expect
var testRunner = new Mocha()
var testSuite = Mocha.Suite.create(testRunner.suite, 'Network tests')
var tests = [ // Define some long async tasks.
{ name: 'POST /todos', pass: true, wait: 3500, exception: null },
{ name: 'GET /nonos', pass: false, wait: 2500, exception: null },
{ name: 'HEAD /hahas', pass: true, wait: 1500, exception: 'no route to host' }
]
tests.forEach(
test =>
// Create a test which value errors and caught exceptions.
testSuite.addTest(new Mocha.Test(test.name, function () {
this.timeout(test.wait + 100) // so we can set waits above 2000ms
return asynchStuff(test).then(asyncResult => {
expect(asyncResult.pass).to.be.true
}) // No .catch() needed because Mocha.Test() handles them.
}))
)
var suiteRun = testRunner.run() // Run the tests
process.on('exit', (code) => { // and set exit code.
process.exit(suiteRun.stats.failures > 0) // Non-zero exit indicates errors.
}) // Falling off end waits for Mocha events to finish.
function asynchStuff (test) {
return new Promise(function(resolve, reject) {
setTimeout(() => {
// console.log(test.name + ' on ' + test.endpoint + ': ' + test.wait + 'ms')
if (test.exception)
reject(Error(test.exception))
resolve({name: test.name, pass: test.pass}) // only need name and pass
}, test.wait)
})
}
此代码处理传递和失败的数据，报告异常，并在出现错误时以非零状态退出。输出报告了所有预期的问题以及关于测试需要花费相同时间（3.5s）的其他问题：
Network tests
✓ POST /todos (3504ms)
1) GET /nonos
2) HEAD /hahas
1 passing (8s)
2 failing
1) Network tests GET /nonos:
AssertionError: expected false to be true
+ expected - actual
-false
+true
2) Network tests HEAD /hahas:
Error: no route to host
<小时/> 延迟执行：在填充和启动mocha测试套件之前，此方法会调用所有缓慢的任务：
const Mocha = require('mocha')
const expect = require('chai').expect
var testRunner = new Mocha()
var testSuite = Mocha.Suite.create(testRunner.suite, 'Network tests')
var tests = [ // Define some long async tasks.
{ name: 'POST /todos', pass: true, wait: 3500, exception: null },
{ name: 'GET /nonos', pass: false, wait: 2500, exception: null },
{ name: 'HEAD /hahas', pass: true, wait: 1500, exception: 'no route to host' }
]
Promise.all(tests.map( // Wait for all async operations to finish.
test => asynchStuff(test)
.catch(e => { // Resolve caught errors so Promise.all() finishes.
return {name: test.name, caughtError: e}
})
)).then(testList => // When all are done,
testList.map( // for each result,
asyncResult => // test value errors and exceptions.
testSuite.addTest(new Mocha.Test(asyncResult.name, function () {
if (asyncResult.caughtError) { // Check test object for caught errors
throw asyncResult.caughtError
}
expect(asyncResult.pass).to.be.true
}))
)
).then(x => { // When all tests are created,
var suiteRun = testRunner.run() // run the tests
process.on('exit', (code) => { // and set exit code.
process.exit(suiteRun.stats.failures > 0) // Non-zero exit indicates errors.
})
})
function asynchStuff (test) {
return new Promise(function(resolve, reject) {
setTimeout(() => {
// console.log(test.name + ' on ' + test.endpoint + ': ' + test.wait + 'ms')
if (test.exception)
reject(Error(test.exception))
resolve({name: test.name, pass: test.pass}) // only need name and pass
}, test.wait)
})
}
输出是相同的，只是mocha没有抱怨慢速测试，而是认为测试工具不到10ms。 Promise.all等待所有承诺解析或拒绝然后创建测试以验证结果或报告异常。这比嵌入式执行长几行，因为它必须：
Promise.all()解决。Promise.all().then() 描述人们如何选择使用哪种风格的评论可以指导其他人。分享你的智慧！