Route returning 204 (No content) can't be waited for with route2

[jraoult]

Current behavior

I'm trying to wait for this route:

 cy.route2({
  method: "DELETE"
}).as("delete");

My server returns a response with 204 status (a valid code for delete cf.https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/DELETE). I can see the route is intercepted thanks to the route section in the runner but wait for this route alias always times out.

If I change the server to return a 200 (even without a body) then the wait command passes. Interestingly, in the runner's panel, the request still shows a progress bar even after the wait passes:

with a 204 status:

with a 200:

I found a workaround by adding a route handler like this:

(req) => {
  req.reply(() => {});
  }

Desired behavior

204 should get the same behaviour as 200

Test code to reproduce

 cy.route2({
  method: "DELETE"
}).as("delete");

// trigger the delete somehow

cy.wait("@delete");

Versions

Cypress 5.5.0

[flotwig]

This seems to happen with any empty body status code, like 304 Found, has the same behavior.

[cypress-bot]

The code for this is done in cypress-io/cypress#9097, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 6.1.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v6.1.0, please open a new issue.