Essentially yes.  Replace "if they are correct" with "if they are expected" and you're on the money.

Then it goes from, `check the return value for post calls` to `check the return value for post calls when email isn't passed`.

And because the only way to confirm the behaviour is through checking the return value, you don't even need to mention it.  It goes from `check the return value for post calls when email isn't passed` to `should error if email isn't passed in a post call`. 

Make sense?