Geolocation simulation in Cypress

To emulate geolocation in Cypress, you can use the Cypress.on event to intercept and mock the geolocation API. Cypress does not have built-in support for geolocation, but you can achieve this using custom commands or directly in your tests.

Here's a way to set up geolocation emulation in Cypress:

Example

Below is an example of how to emulate geolocation in Cypress:

1. Install Cypress (if you haven't already):

   npm install cypress --save-dev
   

2. Create a Cypress Test: Create a new test file in the cypress/integration directory, e.g., geolocation_spec.js.

3. Mock the Geolocation API: Use the Cypress.on event to stub the geolocation methods.

// cypress/integration/geolocation_spec.js

describe('Geolocation Emulation', () => {
  beforeEach(() => {
    // Intercept the geolocation API and mock the position
    cy.visit('/', {
      onBeforeLoad(win) {
        cy.stub(win.navigator.geolocation, 'getCurrentPosition', (callback) => {
          return callback({
            coords: {
              latitude: 40.730610,  // New York City latitude
              longitude: -73.935242,  // New York City longitude
              accuracy: 100,
            },
          });
        });

        cy.stub(win.navigator.geolocation, 'watchPosition', (callback) => {
          return callback({
            coords: {
              latitude: 40.730610,
              longitude: -73.935242,
              accuracy: 100,
            },
          });
        });
      },
    });
  });

  it('should use mocked geolocation', () => {
    // Replace 'https://your-site.com' with the URL of the site you want to test
    cy.visit('https://your-site.com');
    
    // Your test code that requires geolocation
    cy.get('#your-element-id').should('be.visible');
  });
});

Explanation

1. Intercept the Geolocation API: The cy.stub method is used to replace the getCurrentPosition and watchPosition methods of the navigator.geolocation object. This allows you to mock the geolocation data.

   cy.stub(win.navigator.geolocation, 'getCurrentPosition', (callback) => {
     return callback({
       coords: {
         latitude: 40.730610,  // New York City latitude
         longitude: -73.935242,  // New York City longitude
         accuracy: 100,
       },
     });
   });
   
   cy.stub(win.navigator.geolocation, 'watchPosition', (callback) => {
     return callback({
       coords: {
         latitude: 40.730610,
         longitude: -73.935242,
         accuracy: 100,
       },
     });
   });
   

2. Visit the Website: The cy.visit method is used to navigate to the website. The onBeforeLoad option allows you to access the window object before the page loads, enabling you to stub the geolocation methods.

   cy.visit('/', {
     onBeforeLoad(win) {
       // Stubbing code here
     },
   });
   

3. Write Your Test: In the it block, write the test code that relies on geolocation.

   it('should use mocked geolocation', () => {
     // Your test code here
   });
   

Running the Test

To run the test, use the Cypress Test Runner:

npx cypress open

Select the test file (geolocation_spec.js) from the Cypress Test Runner interface and run it.