How To Run Unit Tests With Cypress.io?

I have been using Cypress.io to run end-to-end tests. Recently, I have been using it to run unit tests as well. However, I have some issues with some small helper functions that I

Solution 1:

You can use tasks to execute node code. In your plugins.js create the task with the arguments you need, returning the calculated value:

on('task', {
    // you can define and require this elsewheregetTicketBySummary('getTicketBySummary', { issues, summaryTitle }) {
      return issues.data.issues.filter(...);
    }
  })
}

In your test, execute the task via cy.task:

  it('returns an array containing a found ticket summary', () => {
    cy.task('getTicketBySummary', {
      issues: mockedTickets,
      summaryTitle: 'This is ticket number 1',
    }).then(result => {
      expect(result).eq(mockedTickets.data.issues[0]);
    })
  });

That being said, getTicketBySummary looks like a pure function that doesn't depend on fs. Perhaps separate helper functions that actually need node as that could avoid need cy.task. If you want to be able to import commonjs (require) via ES6 import/export you would usually need to setup build tools (babel/rollup/etc) to be able to resolve that effectively.

Hopefully that helps!