require 'spec_helper'

describe Harvestdor::Indexer::Metrics do
  it 'records successes' do
    expect { subject.success! }.to change { subject.success_count }.from(0).to(1)
  end

  it 'records errors' do
    expect { subject.error! }.to change { subject.error_count }.from(0).to(1)
  end

  describe '#total' do
    it 'is the sum of the successes and errors' do
      expect do
        subject.error!
        subject.success!
      end.to change { subject.total }.from(0).to(2)
    end
  end

  describe '#tally' do
    it "records a success if the block doesn't fail" do
      expect do
        subject.tally do
          # noop
        end
      end.to change { subject.success_count }.from(0).to(1)
    end

    it 'records an error if the block fails' do
      expect do
        subject.tally do
          fail 'Broken'
        end
      end.to change { subject.error_count }.from(0).to(1)
    end

    it 'allows an error handler to be provided' do
      x = double
      expect(x).to receive(:call).with(kind_of(RuntimeError))
      subject.tally(on_error: x) do
        fail 'Broken'
      end
    end
  end
end