require 'flydata-core/postgresql/source_pos'

module FlydataCore
module Postgresql

describe SourcePos do
  let(:subject_object) { described_class.new(snapshot, to_snapshot, pk_values) }

  let(:snapshot) { "1234:1234:" }
  let(:to_snapshot) { nil }
  let(:pk_values) { nil }

  describe '#initialize' do
    context 'with snapshot and pk_values' do
      it { expect(subject_object.snapshot).to eq(Snapshot.new(snapshot)) }
      it { expect(subject_object.pk_values).to eq(pk_values) }
    end

    context 'with source pos object' do
      let(:snapshot) { '1111:1111:' }
      let(:to_snapshot) { '2222:2222:' }
      let(:pk_values) { [{'id' => '1000'}] }
      let(:obj) { described_class.new(snapshot, to_snapshot, pk_values) }
      subject { described_class.new(obj) }

      it { expect(subject.snapshot).to eq(Snapshot.new(snapshot)) }
      it { expect(subject.to_snapshot).to eq(Snapshot.new(to_snapshot)) }
      it { expect(subject.pk_values).to eq(pk_values) }
    end
  end

  describe '#to_s' do
    subject { subject_object.to_s }

    context 'when pk_values is nil' do
      let(:pk_values) { nil }
      it { is_expected.to eq %Q|#{snapshot}\t\t| }
    end
    context 'when pk_values is not nil' do
      let(:to_snapshot) { '1234:1234:' }
      let(:pk_values) { { "user_id" => 1, "address_id" => 3 } }
      it { is_expected.to eq %Q|#{snapshot}\t#{to_snapshot}\t{"user_id":1,"address_id":3}| }
    end
  end

  describe '.load' do
    subject { described_class.load(str) }

    context 'without pk_values' do
      let(:str) { %Q|#{snapshot}\t\t| }
      it { is_expected.to eq described_class.new(snapshot) }
    end
    context 'with pk_values' do
      let(:str) { %Q|#{snapshot}\t\t{"user_id":1,"address_id":3}| }
      it do
        is_expected.to eq described_class.new(snapshot, nil,
                                           "user_id" => 1, "address_id" => 3)
      end
    end
  end

  describe '#<=>' do
    def src_pos(snapshot, pk_values = nil)
      described_class.new(snapshot, '2222:2222:', pk_values)
    end
    context 'when both have no pk_values' do
      it { expect(src_pos('1111:1111:') == src_pos('1111:1111:')).to be(true) }
      it { expect(src_pos('1111:1111:') == src_pos('1112:1112:')).to be(false) }
      it { expect(src_pos('1111:1111:') < src_pos('1112:1112:')).to be(true) }
      it { expect(src_pos('1111:1111:') < src_pos('1110:1110:')).to be(false) }
      it { expect(src_pos('1111:1111:') > src_pos('1110:1110:')).to be(true) }
      it { expect(src_pos('1111:1111:') > src_pos('1112:1112:')).to be(false) }
      it { expect(src_pos('1111:1111:') > src_pos('999:999')).to be(true) }
    end

    context 'when one of them has pk_values' do
      let(:pkv) { [{'id'=>'10'}] }
      it { expect(src_pos('1111:1111:',pkv) == src_pos('1111:1111:')).to be(false) }
      it { expect(src_pos('1111:1111:',pkv) == src_pos('1112:1112:')).to be(false) }
      it { expect(src_pos('1111:1111:',pkv) < src_pos('1111:1111:')).to be(true) }
      it { expect(src_pos('1111:1111:',pkv) < src_pos('1112:1112:')).to be(true) }
      it { expect(src_pos('1111:1111:',pkv) < src_pos('1110:1110:')).to be(false) }
      it { expect(src_pos('1111:1111:',pkv) > src_pos('1110:1110:')).to be(true) }
      it { expect(src_pos('1111:1111:',pkv) > src_pos('1112:1112:')).to be(false) }
    end

    context 'when both have pk_values' do
      let(:pkv1) { [{'id'=>'10'}] }
      let(:pkv2) { [{'name'=>'akira'}] }
      it { expect(src_pos('1111:1111:',pkv1) == src_pos('1111:1111:',pkv1)).to be(true) }
      it { expect(src_pos('1111:1111:',pkv1) == src_pos('1111:1111:',pkv2)).to be(false) }
      it { expect(src_pos('1111:1111:',pkv1) == src_pos('1112:1112:',pkv2)).to be(false) }
      it { expect(src_pos('1111:1111:',pkv1) < src_pos('1111:1111:',pkv2)).to be(true) }
      it { expect(src_pos('1111:1111:',pkv1) < src_pos('1111:1111:',pkv1)).to be(false) }
      it { expect(src_pos('1111:1111:',pkv1) < src_pos('1112:1112:',pkv2)).to be(true) }
      it { expect(src_pos('1111:1111:',pkv1) < src_pos('1110:1110:',pkv2)).to be(false) }
      it { expect(src_pos('1111:1111:',pkv1) > src_pos('1110:1110:',pkv2)).to be(true) }
      it { expect(src_pos('1111:1111:',pkv1) > src_pos('1112:1112:',pkv2)).to be(false) }
      it { expect(src_pos('1111:1111:',pkv1) > src_pos('1111:1111:',pkv2)).to be(false) }
    end
  end
end

end
end