rpc_server_pool_spec.rb

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require 'grpc'
require 'xray/thread_dump_signal_handler'

Pool = GRPC::RpcServer::Pool

describe Pool do
  describe '#new' do
    it 'raises if a non-positive size is used' do
      expect { Pool.new(0) }.to raise_error
      expect { Pool.new(-1) }.to raise_error
      expect { Pool.new(Object.new) }.to raise_error
    end

    it 'is constructed OK with a positive size' do
      expect { Pool.new(1) }.not_to raise_error
    end
  end

  describe '#jobs_waiting' do
    it 'at start, it is zero' do
      p = Pool.new(1)
      expect(p.jobs_waiting).to be(0)
    end

    it 'it increases, with each scheduled job if the pool is not running' do
      p = Pool.new(1)
      job = proc {}
      expect(p.jobs_waiting).to be(0)
      5.times do |i|
        p.schedule(&job)
        expect(p.jobs_waiting).to be(i + 1)
      end
    end

    it 'it decreases as jobs are run' do
      p = Pool.new(1)
      job = proc {}
      expect(p.jobs_waiting).to be(0)
      3.times do
        p.schedule(&job)
      end