# frozen_string_literal: true

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require 'spec_helper'
require 'gruf/controllers/health_controller'

describe ::Gruf::Controllers::HealthController do
  let(:rpc_service) { ::Grpc::Health::V1::Health::Service }
  let(:rpc_desc) { rpc_service.rpc_descs.values.first }
  let(:message) { ::Grpc::Health::V1::HealthCheckRequest.new }
  let(:controller) do
    described_class.new(
      method_key: :get_thing,
      service: rpc_service,
      active_call: Rpc::Test::Call.new,
      message: message,
      rpc_desc: rpc_desc
    )
  end

  describe '#check' do
    subject { controller.check }

    let(:response) do
      ::Grpc::Health::V1::HealthCheckResponse.new(
        status: ::Grpc::Health::V1::HealthCheckResponse::ServingStatus::SERVING
      )
    end

    context 'when Gruf.health_check_hook is nil' do
      it 'returns a serving response' do
        expect(subject).to eq response
      end
    end

    context 'when Gruf.health_check_hook responds to call' do
      before do
        Gruf.health_check_hook = lambda do |_request, _error|
          Math.sqrt(4)
          response
        end
      end

      it 'returns a health check response, calling the proc instead' do
        expect(Math).to receive(:sqrt).with(4).once
        expect(subject).to eq response
      end
    end
  end
end
