```ruby
require 'test_helper'

class CompilationTest < Test::Unit::TestCase
  def test_compilation
    path = 'vendor/assets/stylesheets'
    %w(bootstrap responsive).each do |file|
      engine = Sass::Engine.for_file("#{path}/#{file}.scss", syntax: :scss, load_paths: [path])
      assert_nothing_raised do
        engine.render
      end
    end
  end
end```

Fix import in the test
user
```ruby
require 'test_helper'

class CompilationTest < Test::Unit::TestCase
  def test_compilation
    path = 'vendor/assets/stylesheets'
    %w(bootstrap bootstrap-responsive).each do |file|
      engine = Sass::Engine.for_file("#{path}/#{file}.scss", syntax: :scss, load_paths: [path])
      assert_nothing_raised do
        engine.render
      end
    end
  end
end```
assistant