Why is the request body of my Cypress Post request empty?

[ricardo-molina]

I am writing a Cypress test for my Node backend API.

The test sends a POST request with some headers and body, which includes some required parameters for the backend to work with (productId, requestorEmail, ...).

The strange thing is that the endpoint is just receiving an empty request.body.

This is what my Cypress test looks like, you can see how I send the request body:

    it('onboards a repo - POST', () => {
        cy.request({
            method: 'POST',
            url: `/my/endpoint`,
            headers: headers,
            body: {
                productId: productId,
                requestorEmail: requestorEmail
            }
        }).then( (response) => {
            expect(response.status).to.eq(200);
        });
    });

In case it matters, these are the headers I'm sending :

    const headers = {
        'Accept': 'application/json',
        'Content-Type': 'application/json, text/plain',
        'Authorization': 'Bearer <MY_TOKEN>',
    };

When running the tests, Cypress says: The request we sent was: ... Body: {"productId":"10519", "requestorEmail":"[email protected]"}.

The endpoint that receives this call is, afaik, pretty standard Node and Express code.

router.post("/my/endpoint", async (req, res) => {
    try {
        console.log("REPOSITORY ---> req.body keys = " + Object.keys(req.body));  // It is empty
        ...

Any idea why I am not receiving anything inside the request.body in the backend? I've already been a couple days banging my head against the wall with this issue. Any help is appreciated :)

[DJSdev]

I was able to replicate your issue with a basic express app and copying your cy.request().

The issue seems to be your Content-Type header. Cypress can't seem to parse 'application/json, text/plain'. Switching it to just application/json fixed it on my end.