在 afterEach 块中放置一个断言是一个好习惯吗？

Question

环境：量角器、茉莉花、打字稿

我有几个具有不同设置和相同断言的测试。在 describe 中的每个 it 和 afterEach 块中的 expect 断言中输入不同的步骤是一种好习惯吗？

示例：表单包含 phoneNumberField 和一个 submitBtn;

测试 1：在 phoneNumberField 中输入太短的数字 => 期望 submitBtn 被禁用。

测试 2：在 phoneNumberField 中输入文本 => 期望 submitBtn 被禁用示例代码：

describe('Invalid phone number => submitBtn disabled', () => {

    afterEach(() => {
        expect(submitBtn.isEnabled()).toBeFalsy();
    });

    it('Too short number input', () => {
        phoneNumberField.sendKeys('012');
    });

    it('Text input', () => {
        phoneNumberField.sendKeys('asdf');
    });
});

Answer 1

老实说，我很惊讶它以这种方式工作...我本来想说 "no, it's not a good practice..."，但在试用了几分钟后，我没有发现这样做有任何缺点。

但我还是不会这样做，因为如果你将 expect() 放在 it() 块中，很容易看出你的测试中的逻辑顺序（例如打开页面->期望smtng；单击按钮->期待 smtng；等）

但您可以直接实施它，使用一下，看看它是否适合您自己

P.S。只是为了形象化为什么我认为这不是一个看起来很糟糕的主意：具有以下代码

beforeAll(async () => {expect(true).toBe(false)});

it("1", async () => {
});

it("2", async () => {
});

it("3", async () => {
});

将产生以下输出

Suite: UCare - Provider Search - 'Places' tab
    ✗ 1 (0.002 sec)
      - Expected true to be false.
          at UserContext.beforeAll (/Users/spleshakov/Documents/ui-automation/protractor/custom_implementation/test.spec.js:11:38)
          at /Users/spleshakov/Documents/ui-automation/node_modules/jasminewd2/index.js:112:25
          at new Promise (<anonymous>)
          at SimpleScheduler.promise (/Users/spleshakov/Documents/ui-automation/node_modules/selenium-webdriver/lib/promise.js:2242:12)
          at schedulerExecute (/Users/spleshakov/Documents/ui-automation/node_modules/jasminewd2/index.js:95:18)
          at promise (/Users/spleshakov/Documents/ui-automation/node_modules/selenium-webdriver/lib/promise.js:2232:22)
          at new Promise (<anonymous>)

    ✗ 2 (1 sec)
      - Expected true to be false.
          at UserContext.beforeAll (/Users/spleshakov/Documents/ui-automation/protractor/custom_implementation/test.spec.js:11:38)
          at /Users/spleshakov/Documents/ui-automation/node_modules/jasminewd2/index.js:112:25
          at new Promise (<anonymous>)
          at SimpleScheduler.promise (/Users/spleshakov/Documents/ui-automation/node_modules/selenium-webdriver/lib/promise.js:2242:12)
          at schedulerExecute (/Users/spleshakov/Documents/ui-automation/node_modules/jasminewd2/index.js:95:18)
          at promise (/Users/spleshakov/Documents/ui-automation/node_modules/selenium-webdriver/lib/promise.js:2232:22)
          at new Promise (<anonymous>)

    ✗ 3 (0.907 sec)
      - Expected true to be false.
          at UserContext.beforeAll (/Users/spleshakov/Documents/ui-automation/protractor/custom_implementation/test.spec.js:11:38)
          at /Users/spleshakov/Documents/ui-automation/node_modules/jasminewd2/index.js:112:25
          at new Promise (<anonymous>)
          at SimpleScheduler.promise (/Users/spleshakov/Documents/ui-automation/node_modules/selenium-webdriver/lib/promise.js:2242:12)
          at schedulerExecute (/Users/spleshakov/Documents/ui-automation/node_modules/jasminewd2/index.js:95:18)
          at promise (/Users/spleshakov/Documents/ui-automation/node_modules/selenium-webdriver/lib/promise.js:2232:22)
          at new Promise (<anonymous>)

可以看出，报告正在正常打印，其中每个失败都显示为单独的 it() 测试用例失败

在 afterEach 块中放置一个断言是一个好习惯吗？

Is it a good practice to place an assertion in the afterEach block?

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