it doesn't work inside forEach loop

[0618]

Can anyone help me understand why doesn't the test inside the forEach run? Thanks!

describe("all the links", () => {
    let allLinks = [];
    before(() => {
      cy.task('readSitemapLinks').then((links: string[]) => {
        allLinks = allLinks.concat(links);
      });
    });
    it("should have 100 links", () => {  // This test runs
      expect(allLinks.length).to.eq(100);
    })

    allLinks.forEach((link) => {
      it('the link should work', () => {  // These tests never run
        cy.request(link ? link : '/').then(({ status }) => {
          expect(status).to.eq(200);
        });
      });
  });
})

[0618]

but for loop works

for (let i = 0; i < 3; i++) {
   describe("something", ()=> {
     it("some tests", () => {})
  })
}

[filiphric]

you are running into the asynchronicity issue. think of before() block as a part of your it() blocks. basically, the reason your tests aren’t running is because you are generating your tests using empty array. that array does not get filled until before() hook runs. but since before() hook is essentially a part of your it(), those tests will never get generated.

you can easily fix this issue by moving your allLinks.forEach() function inside your it() block

[0618]

That makes sense. Because for (let i = 0; i < allLinks.length; i++) {... also doesn't work.

[Hexronimo]

I'm new to Cypress, so maybe I understand it wrongly, but I think there is difference between loop inside it and outside it:

• it inside the loop will create separate test for each link
• it outside the loop will create single test which will break on the first link with an assertion error and do not check the rest

I also encountered this problem and I don't understand how to solve it yet. I need to collect links and test them all without breaking on error.