kamal/test/integration/main_test.rb

require_relative "integration_test"

class MainTest < IntegrationTest
  test "envify, deploy, redeploy, rollback, details and audit" do
    kamal :envify
    assert_env_files
    remove_local_env_file

    first_version = latest_app_version

    assert_app_is_down

    kamal :deploy
    assert_app_is_up version: first_version
    assert_hooks_ran "pre-connect", "pre-build", "pre-deploy", "post-deploy"
    assert_envs version: first_version

    second_version = update_app_rev

    kamal :redeploy
    assert_app_is_up version: second_version
    assert_hooks_ran "pre-connect", "pre-build", "pre-deploy", "post-deploy"

    assert_accumulated_assets first_version, second_version

    kamal :rollback, first_version
    assert_hooks_ran "pre-connect", "pre-deploy", "post-deploy"
    assert_app_is_up version: first_version

    details = kamal :details, capture: true
    assert_match /Traefik Host: vm1/, details
    assert_match /Traefik Host: vm2/, details
    assert_match /App Host: vm1/, details
    assert_match /App Host: vm2/, details
    assert_match /traefik:v2.10/, details
    assert_match /registry:4443\/app:#{first_version}/, details

    audit = kamal :audit, capture: true
    assert_match /Booted app version #{first_version}.*Booted app version #{second_version}.*Booted app version #{first_version}.*/m, audit

    kamal :env, :delete
    assert_no_remote_env_file
  end

  test "app with roles" do
    @app = "app_with_roles"

    kamal :envify

    version = latest_app_version

    assert_app_is_down

    kamal :deploy

    assert_app_is_up version: version
    assert_hooks_ran "pre-connect", "pre-build", "pre-deploy", "post-deploy"
    assert_container_running host: :vm3, name: "app-workers-#{version}"

    second_version = update_app_rev

    kamal :redeploy
    assert_app_is_up version: second_version
    assert_container_running host: :vm3, name: "app-workers-#{second_version}"
  end

  test "config" do
    config = YAML.load(kamal(:config, capture: true))
    version = latest_app_version

    assert_equal [ "web" ], config[:roles]
    assert_equal [ "vm1", "vm2" ], config[:hosts]
    assert_equal "vm1", config[:primary_host]
    assert_equal version, config[:version]
    assert_equal "registry:4443/app", config[:repository]
    assert_equal "registry:4443/app:#{version}", config[:absolute_image]
    assert_equal "app-#{version}", config[:service_with_version]
    assert_equal [], config[:volume_args]
    assert_equal({ user: "root", port: 22, keepalive: true, keepalive_interval: 30, log_level: :fatal }, config[:ssh_options])
    assert_equal({ "driver" => "docker", "args" => { "COMMIT_SHA" => version } }, config[:builder])
    assert_equal [ "--log-opt", "max-size=\"10m\"" ], config[:logging]
    assert_equal({ "cmd"=>"wget -qO- http://localhost > /dev/null || exit 1", "interval"=>"1s", "max_attempts"=>3, "port"=>3000, "path"=>"/up", "cord"=>"/tmp/kamal-cord", "log_lines"=>50 }, config[:healthcheck])
  end

  test "aliases" do
    @app = "app_with_roles"

    kamal :envify
    kamal :deploy

    output = kamal :whome, capture: true
    assert_equal Kamal::VERSION, output

    output = kamal :worker_hostname, capture: true
    assert_match /App Host: vm3\nvm3-[0-9a-f]{12}$/, output

    output = kamal :uname, "-o", capture: true
    assert_match "App Host: vm1\nGNU/Linux", output
  end

  test "setup and remove" do
    # Check remove completes when nothing has been setup yet
    kamal :remove, "-y"
    assert_no_images_or_containers

    kamal :envify
    kamal :setup
    assert_images_and_containers

    kamal :remove, "-y"
    assert_no_images_or_containers
  end

  private
    def assert_local_env_file(contents)
      assert_equal contents, deployer_exec("cat .env", capture: true)
    end

    def assert_envs(version:)
      assert_env :CLEAR_TOKEN, "4321", version: version, vm: :vm1
      assert_env :HOST_TOKEN, "abcd", version: version, vm: :vm1
      assert_env :SECRET_TOKEN, "1234 with \"中文\"", version: version, vm: :vm1
      assert_no_env :CLEAR_TAG, version: version, vm: :vm1
      assert_no_env :SECRET_TAG, version: version, vm: :vm11
      assert_env :CLEAR_TAG, "tagged", version: version, vm: :vm2
      assert_env :SECRET_TAG, "TAGME", version: version, vm: :vm2
    end

    def assert_env(key, value, vm:, version:)
      assert_equal "#{key}=#{value}", docker_compose("exec #{vm} docker exec app-web-#{version} env | grep #{key}", capture: true)
    end

    def assert_no_env(key, vm:, version:)
      assert_raises(RuntimeError, /exit 1/) do
        docker_compose("exec #{vm} docker exec app-web-#{version} env | grep #{key}", capture: true)
      end
    end

    def assert_env_files
      assert_local_env_file "SECRET_TOKEN='1234 with \"中文\"'\nSECRET_TAG='TAGME'"
      assert_remote_env_file "SECRET_TOKEN=1234 with \"中文\"", vm: :vm1
      assert_remote_env_file "SECRET_TOKEN=1234 with \"中文\"\nSECRET_TAG=TAGME", vm: :vm2
    end

    def remove_local_env_file
      deployer_exec("rm .env")
    end

    def assert_remote_env_file(contents, vm:)
      assert_equal contents, docker_compose("exec #{vm} cat /root/.kamal/env/roles/app-web.env", capture: true)
    end

    def assert_no_remote_env_file
      assert_equal "nofile", docker_compose("exec vm1 stat /root/.kamal/env/roles/app-web.env 2> /dev/null || echo nofile", capture: true)
    end

    def assert_accumulated_assets(*versions)
      versions.each do |version|
        assert_equal "200", Net::HTTP.get_response(URI.parse("http://localhost:12345/versions/#{version}")).code
      end

      assert_equal "200", Net::HTTP.get_response(URI.parse("http://localhost:12345/versions/.hidden")).code
    end

    def vm1_image_ids
      docker_compose("exec vm1 docker image ls -q", capture: true).strip.split("\n")
    end

    def vm1_container_ids
      docker_compose("exec vm1 docker ps -a -q", capture: true).strip.split("\n")
    end

    def assert_no_images_or_containers
      assert vm1_image_ids.empty?
      assert vm1_container_ids.empty?
    end

    def assert_images_and_containers
      assert vm1_image_ids.any?
      assert vm1_container_ids.any?
    end
end