Issue running tagged tests with cypress-tags

Description

I am testing the cypress-tags run -e TAGS='not @foo and (@bar or @zap)' feature in my project but I’ve found a problem when trying it out.

When I run cypress-tags run -e TAGS='@login' it works as expected, running only the scenarios tagged as login but when trying the opposite cypress-tags run -e TAGS='not @login' I get this errors:

$ cypress-tags run -e TAGS='not @login'
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack
Error parsing tags: 'not'. Message: empty stack

So what it does is it tries to run all the scenarios but since not one matches the criteria all of them are set to passed without running them.

My versions are:

"cypress-cucumber-preprocessor": "^1.16.2"
"cypress": "3.6.1"

Ubuntu 18.04.3 LTS

[badeball]

@davidzambrana, your script yarn test:error would work if you quoted correctly, a

{
  "test:error": "./scripts/run-local-task.sh cypress-tags run -e TAGS=\\'not @skip\\'"
}

… alternatively, you can replace eval with exec and leave the quoting as is. You probably don’t want a subshell to begin with anyway.

[lgandecki]

would you be able to create a simple demonstration/reproduction? Maybe based on a fork of one of our example repos? That will increase the chance that one of us will find the time to investigate and fix 😃

Thanks!