shared_examples "require 'dm-migrations'" do
  it 'includes the migration api in the DataMapper namespace' do
    expect(DataMapper.respond_to?(:migrate!)).to be(true)
    expect(DataMapper.respond_to?(:auto_migrate!)).to be(true)
    expect(DataMapper.respond_to?(:auto_upgrade!)).to be(true)
    expect(DataMapper.respond_to?(:auto_migrate_up!, true)).to be(true)
    expect(DataMapper.respond_to?(:auto_migrate_down!, true)).to be(true)
  end

  %w(Repository Model).each do |name|
    it "includes the migration api in DataMapper::#{name}" do
      expect(DataMapper.const_get(name) < DataMapper::Migrations.const_get(name)).to be(true)
    end
  end

  it 'includes the migration api into the adapter' do
    expect(@adapter.respond_to?(:storage_exists?)).to be(true)
    expect(@adapter.respond_to?(:field_exists?)).to be(true)
    expect(@adapter.respond_to?(:upgrade_model_storage)).to be(true)
    expect(@adapter.respond_to?(:create_model_storage)).to be(true)
    expect(@adapter.respond_to?(:destroy_model_storage)).to be(true)
  end
end