I would strongly recommend looking into rspec's [let](https://www.relishapp.com/rspec/rspec-core/docs/helper-methods/let-and-let) syntax to create variables used in testing. 

Right now, you're creating a member every time you run the tests, then modifying that member in different tests. This means tests could become tied to each other, so if test 2 runs first, test 1 fails.

the `let` syntax prevents this by creating a new instance for each test run.