Reduce number of compiles in rspec tests

Running

```
time bundle exec rspec --fail-fast ./spec/classes/init_spec.rb
```

Before patch:

```
Executed in  335.66 secs    fish           external
   usr time  319.33 secs    2.08 millis  319.32 secs
   sys time   16.21 secs    0.00 millis   16.21 secs
```

After patch:

```
Executed in  285.43 secs    fish           external
   usr time  275.95 secs   49.49 millis  275.90 secs
   sys time    9.00 secs    2.81 millis    9.00 secs
```

Author: traylenator