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require File.dirname(__FILE__) + '/spec_helper'

describe MultiProducer do
  before(:each) do
    @mocked_socket = double(TCPSocket)
    TCPSocket.stub(:new).and_return(@mocked_socket) # don't use a real socket
  end

  describe "Kafka Producer" do
    it "should set default host and port if none is specified" do
      subject.host.should eql("localhost")
      subject.port.should eql(9092)
    end

    it "should have compression" do
      subject.should respond_to :compression
      described_class.new(:compression => Kafka::Message::SNAPPY_COMPRESSION).compression.should == Kafka::Message::SNAPPY_COMPRESSION
      described_class.new.compression.should == Kafka::Message::NO_COMPRESSION
    end

    it "sends single messages" do
      message = Kafka::Message.new("ale")
      encoded = Kafka::Encoder.produce("test", 0, message)

      subject.should_receive(:write).with(encoded).and_return(encoded.length)
      subject.push("test", message, :partition => 0).should == encoded.length
    end

    it "sends multiple messages" do
      messages = [Kafka::Message.new("ale"), Kafka::Message.new("beer")]
      reqs = [
        Kafka::ProducerRequest.new("topic", messages[0]),
        Kafka::ProducerRequest.new("topic", messages[1]),
      ]
      encoded = Encoder.multiproduce(reqs)

      subject.should_receive(:write).with(encoded).and_return(encoded.length)
      subject.multi_push(reqs).should == encoded.length
    end

    it "should compress messages" do
      subject.compression = Kafka::Message::SNAPPY_COMPRESSION
      @mocked_socket.stub :write => 0
      messages = [Kafka::Message.new("ale"), Kafka::Message.new("beer")]

      encoded = Encoder.produce("test", 0, messages[0])
      Encoder.should_receive(:produce).with("test", 0, messages[0], subject.compression).and_return encoded
      subject.push("test", messages[0], :partition => 0)

      reqs = [
          Kafka::ProducerRequest.new("topic", messages[0]),
          Kafka::ProducerRequest.new("topic", messages[1]),
      ]
      encoded = Encoder.multiproduce(reqs)
      Encoder.should_receive(:multiproduce).with(reqs, subject.compression)
      subject.multi_push(reqs)
    end
  end
end
