Adding `.only` to multiple tests only runs the last one

[nachocab]

Current behavior:

When I run this suite

describe('do something', function() {
  it.only('1 does this', function (){...}) // doesn't run
  it('2 does that later', function (){...}) // doesn't run
  it.only('3 does this as well', function (){...}) // runs
})

I would expect only tests 1 and 3 to run (this is what happens in mocha), but Cypress only runs the last one (3). Surprisingly, it does allow running more than one test when using only if they have the same name.

describe('do something', function() {
  it.only('1 does this', function (){...}) // runs
  it('2 does that later', function (){...}) // doesn't run
  it.only('1 does this', function (){...}) // runs
})

It would be nice if only in Cypress matched the behavior of mocha

[jennifer-shehane]

This is related to Cypress using an earlier version of Mocha. Much of the work for the upgrade has been done though and is awaiting release. #2528

[jennifer-shehane]

The code for this is done in 4.0, but this has yet to be released. We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 4.0.0.

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Cypress v4.0.0, please open a new issue.