Contents

require 'spec_helper'

describe ROM::Adapter do
  before do
    class TestAdapter < ROM::Adapter
      def self.schemes
        [:test_scheme]
      end
    end
  end

  describe '.setup' do
    it 'sets up connection based on a uri' do
      adapter = ROM::Adapter.setup("test_scheme::memory")

      expect(adapter).to be_instance_of(TestAdapter)
    end

    it 'raises an exception if the scheme is not supported' do
      expect {
        ROM::Adapter.setup("bogus://any-host")
      }.to raise_error(ArgumentError, '"bogus://any-host" uri is not supported')
    end
  end

  describe '.[]' do
    it "looks up and return the adapter class for the given schema" do
      expect(ROM::Adapter[:test_scheme]).to eq TestAdapter
    end
  end

  describe 'Registration order' do
    it "prefers the last-defined adapter" do
      class OrderTestFirst < TestAdapter
        def self.schemes
          [:order_test]
        end
      end

      adapter = ROM::Adapter.setup("order_test::memory")
      expect(adapter).to be_instance_of(OrderTestFirst)

      OrderTestSecond = Class.new(OrderTestFirst)

      adapter = ROM::Adapter.setup("order_test::memory")

      expect(adapter).to be_instance_of(OrderTestSecond)
    end
  end

  describe '#disconnect' do
    it 'does nothing' do
      adapter_class = Class.new(ROM::Adapter) {
        def self.schemes
          [:bazinga]
        end
      }

      adapter = adapter_class.new('bazinga://localhost')

      expect(adapter.disconnect).to be(nil)
    end
  end

  describe '.setup' do
    it 'supports connection uri and additional options' do
      Class.new(ROM::Adapter) {
        def self.schemes
          [:bazinga]
        end
      }

      adapter = ROM::Adapter.setup('bazinga://localhost', super: :option)

      expect(adapter.uri).to eql(Addressable::URI.parse('bazinga://localhost'))
      expect(adapter.options).to eql(super: :option)
    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
rom-0.5.0	spec/unit/rom/adapter_spec.rb