Alex Zlotnik

This makes sense to think of these tests (`Equal` and `Contains`) as not totally equivalent. I do, however, think they fall under the category of having 1 thing to test...

I've tried writing a test, but I can't seem to get testing working on my machine. It looks like there's a lot of stuff set up for this, but no...

Alright. I've added a test that should work right. My environment is a bit different, so hopefully it'll run correctly on travis etc. Let me know if it works or...

I'm getting the same issue. It looks like everything is working as expected, so I'd be surprised if anyone _doesn't_ have it. https://swagger.io/docs/specification/v3_0/describing-parameters/#header-parameters. Can we merge that PR?