XHR requests are not stubbed with `intercept` when server isn't running

[maximedupre]

Current behavior

I posted this problem on gitter and another user (@genughaben_gitlab) confirmed he also has this problem.

I want to stub my local REST API to test my front end in insolation. When the REST API is turned on, everything works as expected - the XHR are stubbed. When my REST API is turned off, the XHR fail and are not stubbed.

For example, here's what happens when my API is not started:

And here's what happens when I simply turn on my API and re-run the tests:

Desired behavior

My server should not be started for XHR stubs to work

Test code to reproduce

Unable to provide a repro, but here is test code for the test shown in the screenshot

describe('Project page', () => {
    beforeEach(() => {
        helper.login(1);
    });

    describe('when the play button is clicked', () => {
        describe('when the stop button is clicked', () => {
            it.only('should stop the project', () => {
                defaultIntercepts();
                cy.visit('https://localhost:4200/projects/1');

                cy.get('#play-button').click();
                cy.get('#stop-button').click();

                const playheadLeftPosObj = { pos: 0 };

                setInitialPlayheadLeftPos(playheadLeftPosObj);
                cy.get('#playhead').should(($el: any) => {
                    expect($el[0].getBoundingClientRect().left).to.equal(
                        playheadLeftPosObj.pos
                    );
                });
            });
        });
    });
});

function defaultIntercepts() {
    cy.intercept('GET', '/users/1', {
        id: 1
    });
    cy.intercept(
        'GET',
        '/projects/1?used-space-wavs-and-videos',
        createProjectFixtures({})
    );
    cy.intercept('GET', '/projects/1/tracks', []);
    cy.intercept('GET', '/projects/1/files?is-consolidation', []);
}

Versions

This issue did not occur with cy.route.

Cypress version: 6.1
Chrome version: Version 87.0.4280.67 (Official Build) (x86_64)
OS version: mac os 10.15.7

[bahmutov]

Can you give intercepts aliases so you can see which ones are actually intercepted?

…

Sent from my iPhone

On Dec 9, 2020, at 14:47, Maxime Dupré ***@***.***> wrote:  Current behavior I posted this problem on gitter and another user ***@***.***_gitlab) confirmed he also has this problem. I want to stub my local REST API to test my front end in insolation. When the REST API is turned on, everything works as expected - the XHR are stubbed. When my REST API is turned off, the XHR fail and are not stubbed. For example, here's what happens when my API is not started: And here's what happens when I simply turn on my API and re-run the tests: Desired behavior My server should not be started for XHR stubs to work Test code to reproduce Unable to provide a repro, but here is test code for the test shown in the screenshot describe('Project page', () => { beforeEach(() => { helper.login(1); }); describe('when the play button is clicked', () => { describe('when the stop button is clicked', () => { it.only('should stop the project', () => { defaultIntercepts(); cy.visit('https://localhost:4200/projects/1'); cy.get('#play-button').click(); cy.get('#stop-button').click(); const playheadLeftPosObj = { pos: 0 }; setInitialPlayheadLeftPos(playheadLeftPosObj); cy.get('#playhead').should(($el: any) => { expect($el[0].getBoundingClientRect().left).to.equal( playheadLeftPosObj.pos ); }); }); }); }); }); function defaultIntercepts() { cy.intercept('GET', '/users/1', { id: 1 }); cy.intercept( 'GET', '/projects/1?used-space-wavs-and-videos', createProjectFixtures({}) ); cy.intercept('GET', '/projects/1/tracks', []); cy.intercept('GET', '/projects/1/files?is-consolidation', []); } Versions This issue did not occur with cy.route. Cypress version: 6.1 Chrome version: Version 87.0.4280.67 (Official Build) (x86_64) OS version: mac os 10.15.7 — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[maximedupre]

Here is the result with aliases and my API turned on:

[bahmutov]

could you screenshot when the API is off?

[maximedupre]

Same as in my first post:

[bahmutov]

Hmm, in cypress-io/cypress-example-recipes#606 I am stubbing the second API endpoint that does not exist, but it works fine. Are your requests going to the right port? I see a mixture of 4200 and 3030. Is this app public or could you create a public reproduction?

[maximedupre]

Requests are going to the right ports. API is at http://localhost:3030 and front-end is at https://localhost:4200. Unfortunately this isn't a public app and I don't have the time right now to do a repro.

I just tried "http://localhost:4200" (instead of https, to make both the api and front end http), but same problem.

[tgugli]

This looks very similar to the issue that I just posted: #9602

[katia-aa]

Having the same issue here with intercept. The api I'm trying to intercept is behind a proxy. When I turn off my VPN, the test fails. When I turn my VPN back on, it passes.

[kunalnagar]

Hey guys - do you think the problem may be related to pattern matching of the URL on cy.intercept? In my particular scenario, if I use:

// WORKS
cy.server()
cy.route('**/v1/answers**', 'fixture:answers.json')

// DOES NOT WORK
cy.intercept('GET', '**/v1/answers**', { fixture: 'answers.json' })

[bahmutov]

We believe this problem is related to the OPTIONS call that happens before the actual call cross domain

…

Sent from my iPhone

On Dec 9, 2020, at 21:52, Kunal Nagar ***@***.***> wrote:  Hey guys - do you think the problem may be related to pattern matching of the URL on cy.intercept? In my particular scenario, if I use: // WORKS cy.server() cy.route('**/v1/answers**', 'fixture:answers.json') // DOES NOT WORK cy.intercept('GET', '**/v1/answers**', { fixture: 'answers.json' }) — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.

[maximedupre]

I do see a failed OPTIONS request for each failed GET request

But for some reason the OPTIONS is after the GET?

[rhogeranacleto]

I have the same problem. My intercept stubs only work if my local server is running, otherwise, it fails.