如果之前或它阻止在摩卡测试中失败，之后块是否仍然执行答案

【问题标题】：Does after block still excecute if before or it block fail in mocha test如果之前或它阻止在摩卡测试中失败，之后块是否仍然执行
【发布时间】：2021-12-26 21:50:46
【问题描述】：

如果摩卡测试看起来像这样

describe("create a user") {
    before("login to system") {}
    it("execute assertion") {}
    after("delete the user") {}
}

如果 before 或 it block 失败，after block 是否仍然执行？

【问题讨论】：

标签： javascript testing automation mocha.js

【解决方案1】：

是的，当测试失败时，它将运行after hook。

这段代码：

before("login to system", () => {
  console.log("BEFORE")
  throw new Error('error');
})

it('testing...', (done) => {
  console.log("IT")
  done();
});

after("delete the user", () => {
  console.log("AFTER")
})

输出这个：

BEFORE
    1) "before all" hook: login to system for "testing..."
AFTER


  0 passing (14ms)
  1 failing

  1) States Get
       "before all" hook: login to system for "testing...":
     Error: error
      at Context.<anonymous> (test\index.js:22:11)
      at processImmediate (node:internal/timers:463:21)

你也可以查看这个 github 讨论：#1612 其中here 说：

请看下面的例子，说明在beforeEach失败后正确调用了after

代码

// example.js
before(function() {
  console.log('before');
});

after(function() {
  console.log('after');
});

describe('suite', function() {
  beforeEach(function() {
    throw new Error('In beforeEach');
  });

  afterEach(function() {
    console.log('afterEach');
  });

  it('test', function() {
    // example
  });
});

还有输出。

// Test run
$ mocha example.js

  before

  ․afterEach
after


  0 passing (7ms)
  1 failing

  1) suite "before each" hook:
     Error: In beforeEach
      at Context.<anonymous> (/Users/dstjules/git/mocha/example.js:11:11)
      at callFn (/usr/local/lib/node_modules/mocha/lib/runnable.js:251:21)
      at Hook.Runnable.run (/usr/local/lib/node_modules/mocha/lib/runnable.js:244:7)
      at next (/usr/local/lib/node_modules/mocha/lib/runner.js:259:10)
      at Immediate._onImmediate (/usr/local/lib/node_modules/mocha/lib/runner.js:276:5)
      at processImmediate [as _immediateCallback] (timers.js:358:17)

【讨论】：