# frozen_string_literal: true

require_relative "../../spec_helper"

require_relative "../../../lib/ultravisor/child"
require_relative "../../../lib/ultravisor/error"

describe Ultravisor::Child do
  let(:args) { { id: :bob, klass: mock_class, method: :run } }
  let(:child) { Ultravisor::Child.new(**args) }
  let(:mock_class) { Class.new.tap { |k| k.class_eval { def run; end } } }

  describe "#wait" do
    context "when the child isn't running" do
      it "just returns straight away" do
        child.wait
      end
    end

    context "when the child is running" do
      it "only exits once the child has finished" do
        child.instance_variable_set(:@thread, Thread.new {})

        expect(child.instance_variable_get(:@spawn_cv)).to receive(:wait).with(child.instance_variable_get(:@spawn_m)) do
          child.instance_variable_set(:@thread, nil)
        end

        child.wait
      end
    end
  end
end