```ruby
require_relative '../lib/core'

def fixture_path
  File.join(File.dirname(__FILE__), 'fixtures')
end

def fixture(name)
  File.read(File.join(fixture_path, name))
end
```

Use coveralls also for rspec.
user
```ruby
require 'coveralls'
Coveralls.wear!

require_relative '../lib/core'

def fixture_path
  File.join(File.dirname(__FILE__), 'fixtures')
end

def fixture(name)
  File.read(File.join(fixture_path, name))
end
```
assistant