Cypress config object passed to the plugins file should have config filename

[bahmutov]

Cypress v3.7.0

The plugins file receives resolved config object with properties from cypress.json resolved. But the config object has plugins, fixtures, integration paths - yet it does not have the project root or configuration filename. Since we have added --config-file option, we should pass it in the config object (or false is the user has disabled it)

See https://docs.cypress.io/guides/guides/command-line.html#cypress-run-config-file-lt-config-file-gt

Expected behavior with the following plugins file

module.exports = (on, config) => {
  console.log(config.configFile)
}

$ cypress run
cypress.json
$ cypress run --config-file false
false
$ cypress run --config-file my-config.json
/resolved/path/to/my-config.json

[bahmutov]

Relevant for https://github.com/bahmutov/cypress-extends-example

[jennifer-shehane]

Yah, I thought this was a bit weird too when I began investigating #5855 It's a weird edge case config just like browsers and should probably follow the same implementation as that value.

[cypress-bot]

The code for this is done in cypress-io/cypress#6317, but has yet to be released.
We'll update this issue and reference the changelog when it's released.