Throw error when trying to set Cypress.config() for non-mutable config values #3422
Description
Current behavior:
When trying to set Cypress.config() for non-mutable configurations which are ignored from inside of the tests, Cypress does not perform the action as expected and does not throw an error.
Example:
The test below passes, but Cypress does not indeed change the location of the screenshotsFolder, nor does it throw an error telling you that the screenshotsFolder was not set.
it('screenshots folder not settable', () => {
Cypress.config('screenshotsFolder', 'cypress/screenshots/desktop')
expect(Cypress.config('screenshotsFolder')).to.eq('cypress/screenshots/desktop')
cy.screenshot('homepage_desktop')
})Actual saved screenshot location
Related issues:
- Does not print full config: Cypress.config() does not return the complete configuration #509
- Trying to set
screenshotsFolder: screenshotsFolder not working correctly #1525
Desired behavior:
- Cypress should throw an error when trying to set non-mutable configuration values.
- Make list of all config values that are mutable vs non-mutable. Maybe add to documentation.
Versions
Cypress 3.1.5