CODEWITHSUNDEEP
node.jsasync-awaitmocha.js
Huckleberry Carignan
Huckleberry Carignan

Reputation: 2318

How to run async mocha tests in their order?

Take the below code:

describe('foobar', function () {
   it('foo', async () => {
      // ############ API Call ############
      let foo = await chaiHttpUtil.postRequest(yadda, yadda yadda);
      // ############ Verify results ############
      expect(foo).to.have.status(200);
   ));
   it('bar', async () => {
      // ############ API Call ############
      let bar = await chaiHttpUtil.postRequest(yadda, yadda yadda);
      // ############ Verify results ############
      expect(bar).to.have.status(200);
   ));
));

When the above is run, I see that the first "it" (i.e. foo) is kicked off then, instead of waiting for it to finish, it then kicks off the second "it" (i.e. bar).

How can I get bar to wait until foo is completed? Can I? I understand the nature of async is so that it is just waiting to finish, but can I put something in the bar to get it to wait for the first to complete?

Update:

I made each test independent from state and each other. Works great now. Thanks for the guidance!

Upvotes: 0

Views: 797

Answers (1)

digiwand
digiwand

Reputation: 1348

As mentioned by, @k0pernikus, "each it should be independent of one another".

Some possible solutions:

  1. You could combine the tests into one it function since they are dependent on one another.

  2. State changes should not be propagated to other tests and the state should be restored for each test. Using beforeEach/afterEach hooks can help you achieve this. See: https://mochajs.org/#using-async-await

  3. You could utilize this delayed root-setup (https://mochajs.org/#delayed-root-suite), but I don't suspect this is what you're looking for.

Another thing to note is that:

Passing arrow functions (aka “lambdas”) to Mocha is discouraged.

You should be using

it('bar', async function () { //... });

instead of

it('bar', async () => { //... });

See: https://mochajs.org/#arrow-functions

Upvotes: 1

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