postgres_spec.rb

describe 'datadog::postgres' do
  expected_yaml = <<-EOF
    instances:
    - host: localhost
      port: 5432
      ssl: true
      username: datadog
      password: somepass
      dbname: my_database
      tags:
      - spec
      relations:
      - apple_table
      - orange_table
      collect_function_metrics: true
    init_config:
  EOF

  cached(:chef_run) do
    ChefSpec::SoloRunner.new(step_into: ['datadog_monitor']) do |node|
      node.automatic['languages'] = { python: { version: '2.7.2' } }

      node.set['datadog'] = {
        api_key: 'someapikey',
        postgres: {
          instances: [
            {
              collect_function_metrics: true,
              dbname: 'my_database',
              password: 'somepass',
              port: 5432,
              relations: ['apple_table', 'orange_table'],
              server: 'localhost',
              ssl: true,
              tags: ['spec'],
              username: 'datadog'
            }
          ]
        }
      }
    end.converge(described_recipe)
  end

  subject { chef_run }

  it_behaves_like 'datadog-agent'

  it { is_expected.to include_recipe('datadog::dd-agent') }

  it { is_expected.to add_datadog_monitor('postgres') }

  it 'renders expected YAML config file' do
    expect(chef_run).to render_file('/etc/dd-agent/conf.d/postgres.yaml').with_content { |content|
      expect(YAML.load(content).to_json).to be_json_eql(YAML.load(expected_yaml).to_json)
    }
  end
end