I’m working on a testing project where I use Cypress. I would like to intercept a network request for a javascript file and make a small change before I send the response back to the application. When I run my cypress test file (UI mode), I can see in the browser dev tools that the network request is made successfully.

But when I try to intercept that request with Cypress it doesn’t seem to work.
Note: I notice that I can successfully intercept requests to localhost .js files, but not to an external domain.

By the way, this request takes place during the initialization in the beforeEach method, thus I have not included any test method, since they are not relevant.

Here’s my test file:

describe("Smoke test", () => {
  beforeEach(() => {

    cy.intercept('GET', '/aws-config/*',{
      statusCode: 200,
      body: awsConfig
    }).as('Manifest')

   

**    cy.intercept({method: 'GET', url: 'https://login.salesforce.com/support/api/53.0/lightning/opencti_min.js'},(req) => {
      console.log(`Request intercepted by Cypress: ${req.url}`)
    })**

    cy.visit(mainUrl, {
      onBeforeLoad(win){

        win.parent.addEventListener('message', (e) => { handlePostMessagesFromInGenius(e) })
        cy.spy(win, 'postMessage').as('postMessage');
      }});
  });

  it("Should load app", () => {
    cy.visit(mainUrl).wait('@Manifest')

    cy.get('@Manifest').its('request.url').should('contain', 'aws-config')
  });

  it("Should connect the monitor", () => {


      cy.get('[data-tst-loc="ExtensionFieldInput"]').type('2215');
      cy.get('[data-tst-loc="StartMonitorBtn"]').click()
      cy.get('[data-tst-loc="ExtensionFieldInput"]').should('not.be.visible');
  })
});

On my cypress.config.ts file:

import { defineConfig } from "cypress";

export default defineConfig({
  chromeWebSecurity: false,
  defaultCommandTimeout: 6000,
  e2e: {
    setupNodeEvents(on, config) {
      // implement node event listeners here
    },
  },
});