fluke/devops-service/spec/workers/chef_node_name_builder_spec.rb

require 'workers/stack_bootstrap/chef_node_name_builder'
RSpec.describe ChefNodeNameBuilder do
  # test with real response to ensure it is processed correctly
  let(:server_info) do
    {
      "name"=>"stack-achuchkalov-aws-test-1455976199-master01",
      "id"=>"i-fac32c7e",
      "key_name"=>"achuchkalov",
      "private_ip"=>"172.31.11.30",
      "public_ip"=>"52.90.250.51",
      "tags" => {
        "Name"=>"master01",
        "aws:cloudformation:logical-id"=>"EC2Instance1",
        "aws:cloudformation:stack-name"=>"stack-achuchkalov-aws-test-1455976199",
        "StackTemplate"=>"1inst",
        "aws:cloudformation:stack-id" => "arn:aws:cloudformation:us-east-1:736558555923:stack/stack-achuchkalov-aws-test-1455976199/d5f3ca60-d7d8-11e5-9ba1-50d5cd24fac6",
        "cid:deployEnv"=>"test",
        "cid:project"=>"aws",
        "cid:user"=>"root",
        "cid:priority"=>0
      }
    }
  end
  let(:node_name_builder) {
    ChefNodeNameBuilder.new(
      provider_server_info: server_info,
      project_id: 'proj',
      env_id: 'dev'
    )
  }
  let(:build_node_name) { node_name_builder.build_node_name!({}) }

  def set_mask(mask)
    server_info['tags']['cid:node-name-mask'] = mask
  end

  describe '#build_node_name' do
    it 'uses default mask (":project-:env-:instanceid")' do
      expect(build_node_name).to eq 'proj-dev-i-fac32c7e'
    end

    it 'substitutes :project, :env, :instanceid and :instancename' do
      set_mask(':project/:env/:instanceid/:instancename')
      expect(build_node_name).to eq 'proj/dev/i-fac32c7e/master01'
    end

    it 'substitutes :time' do
      set_mask(':project-:time')
      expect(build_node_name).to match /proj-\d+/
    end

    describe 'substitutes incrementers variables :increment-groupname: with numbers depending on @incrementers_values param' do
      it 'starts with 01 for empty hash' do
        set_mask('node-:increment-slave:')
        expect(node_name_builder.build_node_name!({})).to eq 'node-01'
      end

      it "continues with next values if hash isn't empty" do
        set_mask('node-:increment-slave:')
        expect(node_name_builder.build_node_name!({'slave' => nil})).to eq 'node-01'
        expect(node_name_builder.build_node_name!({'slave' => 1})).to eq 'node-02'
        expect(node_name_builder.build_node_name!({'slave' => 50})).to eq 'node-51'
      end

      it 'could substitute different incrementers at once' do
        set_mask('node-:increment-slave:-:increment-master:')
        expect(node_name_builder.build_node_name!({'slave' => 1, 'master' => 3})).to eq 'node-02-04'
      end
    end

  end
end