Support for passing multiple tags as AND selection

Hello,

It appears the bahavior of multiple --tags is like “run all tests with this tag OR the other tag”. in our case we have tags like: prod, stage, e2e, integration, and a lot other specific parts of the application

How to run only prod integration tests for example (not all integration tests have a prod tag for example)? I would expect from running --tag prod --tag integration to run all tests that have prod AND integration as tags, not either or.

Edit: I have checked the implementation:

   // filematcher
   containsTag : function(moduleTags, tags) {
      // my proposal > go through defined tags and check if all are in testfile
      return tags.every(function (testTag) {
        return (moduleTags.indexOf(testTag) > -1);
      });
      // current implementation > checks if one of the defined tags is in testfile
      return moduleTags.some(function (testTag) {
        return (tags.indexOf(testTag) > -1);
      });
    },

Depends on how it is intended to work. Probably could also make it switchable to “or | and” behavior, what’s your suggestion. If you prefer the AND, I would create a PR.

Regards, Markus

[beatfactor]

The --tag-filter argument is an interesting idea, however it’s a little bit complicated for this use-case. I think we could initially solve this by making the --tag argument do an AND inclusion if a comma-separated list is supplied (as discussed in #1998). This will also be consistent to how --skiptags works and we might also introduce the --tags argument as an alias.

[beatfactor]

Also I’m afraid the maintainer has fled to the south of Spain for the time being.