cy.intercept: delay is not working on 204 No Content

Current behavior

When using cy.intercept('POST', url, { statusCode: 204, delay: 5000 }) delay (or delayMs) is not respected.

Is this intended behavior? If so, why?

When running tests below I see:

First spec:

Second spec:

Desired behavior

When a request responds with 204 No Content delay (or delayMs) should work.

Test code to reproduce

it('post a comment 200 OK', () => {
    cy.intercept('POST', 'https://jsonplaceholder.cypress.io/comments', {
            statusCode: 200,
            delay: 5000,
    }).as('success');

    cy.visit('https://example.cypress.io/commands/network-requests');

    cy.get('.network-post-comment').should('have.value', '')

    cy.get('.btn-success').click();

    cy.wait('@success'); // waits 5000 ms

    cy.get('.network-post-comment').should('contain', 'POST successful!')
});

it('post a comment 204 No Content', () => {
    cy.intercept('POST', 'https://jsonplaceholder.cypress.io/comments', {
            statusCode: 204, // delay is not respected
            delay: 5000,
    }).as('success');

    cy.visit('https://example.cypress.io/commands/network-requests');

    cy.get('.network-post-comment').should('have.value', '')

    cy.get('.btn-success').click();

    cy.wait('@success'); // resolves immediately

    cy.get('.network-post-comment').should('contain', 'POST successful!')
});

Versions

• Cypress: 6.5.0
• Chrome: 88.0.4324.182
• MacOS: 10.15.7

[jennifer-shehane]

I can recreate this issue. The delay is not applying for 204 content.

it('post a comment 200 OK', () => {
  cy.intercept('POST', 'https://jsonplaceholder.cypress.io/comments', {
    statusCode: 200,
    delay: 5000,
  }).as('success');

  cy.visit('https://example.cypress.io/commands/network-requests');
  cy.get('.network-post-comment').should('have.value', '')
  cy.get('.btn-success').click();

  cy.wait('@success'); // waits 5000 ms
});

it('post a comment 204 No Content', () => {
  cy.intercept('POST', 'https://jsonplaceholder.cypress.io/comments', {
    statusCode: 204, // delay is not respected
    delay: 5000,
  }).as('success');

  cy.visit('https://example.cypress.io/commands/network-requests');
  cy.get('.network-post-comment').should('have.value', '')
  cy.get('.btn-success').click();

  // resolves immediately, should fail with only 1sec timeout
  cy.wait('@success', { timeout: 1000 }); 
});

[cypress-bot[bot]]

Released in 8.0.0.

This comment thread has been locked. If you are still experiencing this issue after upgrading to Cypress v8.0.0, please open a new issue.