```ruby
require 'dm-core/spec/lib/pending_helpers'

Spec::Runner.configure do |config|
  config.include(DataMapper::Spec::PendingHelpers)
end
```

Fix specs to run under 1.8.7
user
```ruby
require 'backports'
require 'dm-core/spec/lib/pending_helpers'

Spec::Runner.configure do |config|
  config.include(DataMapper::Spec::PendingHelpers)
end
```
assistant