Integration tests with Vagrant and Cucumber

This commit removes the existing 'local' integration tests and replaces
them with Cucumber features running against VMs.  At this stage,
some of the assertions are pending due to the limited nature of the
response returned when executing commands through Vagrant, but the
framework is there as a starting point to build upon.

To run the suite:

    bundle exec cucumber

During development, avoid scraping the VM between runs:

    bundle exec cucumber KEEPING_RUNNING=1

Ultimately I would like to see the `TestApp` helpers along with the Vagrant
integration packaged and available for use when developing gems that work with
Cap. For now though, this closes #641

capistrano.gemspec

@@ -28,5 +28,8 @@ Gem::Specification.new do |gem|
 
   gem.add_development_dependency 'rspec'
   gem.add_development_dependency 'mocha'
+  gem.add_development_dependency 'vagrant', '~> 1.0.7'
+  gem.add_development_dependency 'kuroko'
+  gem.add_development_dependency 'cucumber'
 
 end

features/deploy.feature

@@ -0,0 +1,52 @@
+Feature: Deploy
+
+  Background:
+    Given a test app with the default configuration
+    And servers with the roles app and web
+
+  Scenario: Creating the repo
+    When I run cap "git:check"
+    Then references in the remote repo are listed
+
+  Scenario: Creating the directory structure
+    When I run cap "deploy:check:directories"
+    Then the shared path is created
+    And the releases path is created
+
+  Scenario: Creating linked directories
+    When I run cap "deploy:check:linked_dirs"
+    Then directories in :linked_dirs are created in shared
+
+  Scenario: Creating linked directories for linked files
+    When I run cap "deploy:check:make_linked_dirs"
+    Then directories referenced in :linked_files are created in shared
+
+  Scenario: Checking linked files - missing file
+    Given a required file
+    But the file does not exist
+    When I run cap "deploy:check:linked_files"
+    Then the task will exit
+
+  Scenario: Checking linked files - file exists
+    Given a required file
+    And that file exists
+    When I run cap "deploy:check:linked_files"
+    Then the task will be successful
+
+  Scenario: Creating a release
+    When I run cap "git:create_release" as part of a release
+    Then the repo is cloned
+    And the release is created
+
+  Scenario: Symlink linked files
+    When I run cap "deploy:symlink:linked_files" as part of a release
+    Then file symlinks are created in the new release
+
+  Scenario: Symlink linked dirs
+    When I run cap "deploy:symlink:linked_dirs" as part of a release
+    Then directory symlinks are created in the new release
+
+  Scenario: Publishing
+    When I run cap "deploy:symlink:release"
+    Then the current directory will be a symlink to the release
+

features/installation.feature

@@ -0,0 +1,16 @@
+Feature: Installation
+
+  Background:
+    Given a test app with the default configuration
+
+  Scenario: With default stages
+    When I run cap "install"
+    Then the deploy.rb file is created
+    And the default stage files are created
+    And the tasks folder is created
+
+  Scenario: With specified stages
+    When I run cap "install STAGES=qa,production"
+    Then the deploy.rb file is created
+    And the specified stage files are created
+    And the tasks folder is created

features/remote_file_task.feature

@@ -0,0 +1,14 @@
+Feature: Remote file task
+
+  Background:
+    Given a test app with the default configuration
+    And a custom task to generate a file
+    And servers with the roles app and web
+
+  Scenario: Where the file does not exist
+    When I run cap "deploy:check:linked_files"
+    Then it creates the file with the remote_task prerequisite
+
+  Scenario: Where the file already exists
+    When I run cap "deploy:check:linked_files"
+    Then it will not recreate the file

features/step_definitions/assertions.rb

@@ -0,0 +1,90 @@
+Then(/^references in the remote repo are listed$/) do
+end
+
+Then(/^the shared path is created$/) do
+  run_vagrant_command(test_dir_exists(TestApp.shared_path))
+end
+
+Then(/^the releases path is created$/) do
+  run_vagrant_command(test_dir_exists(TestApp.releases_path))
+end
+
+Then(/^directories in :linked_dirs are created in shared$/) do
+  TestApp.linked_dirs.each do |dir|
+    run_vagrant_command(test_dir_exists(TestApp.shared_path.join(dir)))
+  end
+end
+
+Then(/^directories referenced in :linked_files are created in shared$/) do
+  dirs = TestApp.linked_files.map { |path| TestApp.shared_path.join(path).dirname }
+  dirs.each do | dir|
+    run_vagrant_command(test_dir_exists(dir))
+  end
+end
+
+Then(/^the task will be successful$/) do
+end
+
+
+Then(/^the task will exit$/) do
+end
+
+Then(/^the repo is cloned$/) do
+  run_vagrant_command(test_dir_exists(TestApp.repo_path))
+end
+
+Then(/^the release is created$/) do
+  run_vagrant_command("ls -g #{TestApp.releases_path}")
+end
+
+Then(/^file symlinks are created in the new release$/) do
+  pending
+  TestApp.linked_files.each do |file|
+    run_vagrant_command(test_symlink_exists(TestApp.release_path.join(file)))
+  end
+end
+
+Then(/^directory symlinks are created in the new release$/) do
+  pending
+  TestApp.linked_dirs.each do |dir|
+    run_vagrant_command(test_symlink_exists(TestApp.release_path.join(dir)))
+  end
+end
+
+Then(/^the current directory will be a symlink to the release$/) do
+  run_vagrant_command(test_symlink_exists(TestApp.current_path))
+end
+
+Then(/^the deploy\.rb file is created$/) do
+  file = TestApp.test_app_path.join('config/deploy.rb')
+  expect(File.exists?(file)).to be_true
+end
+
+Then(/^the default stage files are created$/) do
+  staging = TestApp.test_app_path.join('config/deploy/staging.rb')
+  production = TestApp.test_app_path.join('config/deploy/production.rb')
+  expect(File.exists?(staging)).to be_true
+  expect(File.exists?(production)).to be_true
+end
+
+Then(/^the tasks folder is created$/) do
+  path = TestApp.test_app_path.join('lib/capistrano/tasks')
+  expect(Dir.exists?(path)).to be_true
+end
+
+Then(/^the specified stage files are created$/) do
+  qa = TestApp.test_app_path.join('config/deploy/qa.rb')
+  production = TestApp.test_app_path.join('config/deploy/production.rb')
+  expect(File.exists?(qa)).to be_true
+  expect(File.exists?(production)).to be_true
+end
+
+Then(/^it creates the file with the remote_task prerequisite$/) do
+  TestApp.linked_files.each do |file|
+    run_vagrant_command(test_file_exists(TestApp.shared_path.join(file)))
+  end
+end
+
+Then(/^it will not recreate the file$/) do
+  #
+end

features/step_definitions/cap_commands.rb

@@ -0,0 +1,8 @@
+When(/^I run cap "(.*?)"$/) do |task|
+  TestApp.cap(task)
+end
+
+When(/^I run cap "(.*?)" as part of a release$/) do |task|
+  TestApp.cap("deploy:new_release_path #{task}")
+end
+

features/step_definitions/setup.rb

@@ -0,0 +1,25 @@
+Given(/^a test app with the default configuration$/) do
+  TestApp.install
+end
+
+Given(/^servers with the roles app and web$/) do
+  vagrant_cli_command('up')
+end
+
+Given(/^a required file$/) do
+end
+
+Given(/^that file exists$/) do
+  run_vagrant_command("touch #{TestApp.linked_file}")
+end
+
+Given(/^the file does not exist$/) do
+  pending
+  file = TestApp.linked_file
+  run_vagrant_command("[ -f #{file} ] && rm #{file}")
+end
+
+Given(/^a custom task to generate a file$/) do
+  TestApp.copy_task_to_test_app('spec/support/tasks/database.cap')
+end
+

features/support/env.rb

@@ -0,0 +1,12 @@
+require 'kuroko'
+
+project_root = File.expand_path('../../../', __FILE__)
+vagrant_root = File.join(project_root, 'spec/support')
+
+Kuroko.configure do |config|
+  config.vagrant_root = 'spec/support'
+end
+
+puts vagrant_root.inspect
+
+require_relative '../../spec/support/test_app'

features/support/remote_command_helpers.rb

@@ -0,0 +1,20 @@
+module RemoteCommandHelpers
+
+  def test_dir_exists(path)
+    exists?('d', path)
+  end
+
+  def test_symlink_exists(path)
+    exists?('L', path)
+  end
+
+  def test_file_exists(path)
+    exists?('f', path)
+  end
+
+  def exists?(type, path)
+    %{[ -#{type} "#{path}" ] && echo "#{path} exists." || echo "Error: #{path} does not exist."}
+  end
+end
+
+World(RemoteCommandHelpers)

spec/integration/deploy_finalize_spec.rb

@@ -1,34 +0,0 @@
-require 'integration_spec_helper'
-
-describe 'cap deploy:finished', slow: true do
-  before do
-    install_test_app_with(config)
-  end
-
-  describe 'deploy' do
-    let(:config) {
-      %{
-        set :stage, :#{stage}
-        set :deploy_to, '#{deploy_to}'
-        set :repo_url, 'git://github.com/capistrano/capistrano.git'
-        set :branch, 'v3'
-        server 'localhost', roles: %w{web app}, user: '#{current_user}'
-        set :linked_files, %w{config/database.yml}
-        set :linked_dirs, %w{bin log public/system vendor/bundle}
-        }
-    }
-
-    describe 'log_revision' do
-      before do
-        cap 'deploy:started'
-        cap 'deploy:updating'
-        cap 'deploy:publishing'
-        cap 'deploy:finished'
-      end
-
-      it 'writes the log file' do
-        expect(deploy_to.join('revisions.log')).to be_a_file
-      end
-    end
-  end
-end

spec/integration/deploy_finished_spec.rb

@@ -1,38 +0,0 @@
-require 'integration_spec_helper'
-
-describe 'cap deploy:finished', slow: true do
-  before do
-    install_test_app_with(config)
-  end
-
-  describe 'deploy' do
-    let(:config) {
-      %{
-        set :stage, :#{stage}
-        set :deploy_to, '#{deploy_to}'
-        set :repo_url, 'git://github.com/capistrano/capistrano.git'
-        set :branch, 'v3'
-        server 'localhost', roles: %w{web app}, user: '#{current_user}'
-        set :linked_files, %w{config/database.yml}
-        set :linked_dirs, %w{bin log public/system vendor/bundle}
-        set :release_path, '#{deploy_to}/releases/1234'
-        }
-    }
-
-    describe 'symlink' do
-      before do
-        cap 'deploy:started'
-        cap 'deploy:updating'
-        cap 'deploy:publishing'
-        cap 'deploy:finished'
-      end
-
-      describe 'release' do
-        it 'symlinks the release to `current`' do
-          expect(File.symlink?(current_path)).to be_true
-          expect(File.readlink(current_path)).to eq '/tmp/test_app/deploy_to/releases/1234'
-        end
-      end
-    end
-  end
-end

spec/integration/deploy_started_spec.rb

@@ -1,74 +0,0 @@
-require 'integration_spec_helper'
-
-describe 'cap deploy:started', slow: true do
-  before do
-    install_test_app_with(config)
-  end
-
-  describe 'deploy:check' do
-    let(:config) {
-      %{
-        set :stage, :#{stage}
-        set :deploy_to, '#{deploy_to}'
-        set :repo_url, 'git://github.com/capistrano/capistrano.git'
-        set :branch, 'v3'
-        server 'localhost', roles: %w{web app}, user: '#{current_user}'
-        set :linked_files, %w{config/database.yml}
-        set :linked_dirs, %w{bin log public/system vendor/bundle}
-      }
-    }
-
-    describe 'directories' do
-      before do
-        cap 'deploy:check:directories'
-      end
-
-      it 'ensures the directory structure' do
-        expect(shared_path).to be_a_directory
-        expect(releases_path).to be_a_directory
-      end
-    end
-
-    describe 'linked_dirs' do
-      before do
-        cap 'deploy:check:linked_dirs'
-      end
-
-      it 'ensure directories to be linked in `shared`' do
-        [
-          shared_path.join('bin'),
-          shared_path.join('log'),
-          shared_path.join('public/system'),
-          shared_path.join('vendor/bundle'),
-        ].each do |dir|
-          expect(dir).to be_a_directory
-        end
-      end
-    end
-
-    describe 'linked_files' do
-
-      subject { cap 'deploy:check:linked_files' }
-
-      context 'file does not exist' do
-        it 'fails' do
-          expect(subject).to match 'config/database.yml does not exist'
-        end
-      end
-
-      context 'file exists' do
-        before do
-          create_shared_directory('config')
-          create_shared_file('config/database.yml')
-        end
-
-        it 'suceeds' do
-          expect(subject).not_to match 'config/database.yml does not exist'
-          expect(subject).to match 'successful'
-        end
-
-      end
-    end
-  end
-end
-

spec/integration/deploy_update_spec.rb

@@ -1,44 +0,0 @@
-require 'integration_spec_helper'
-
-describe 'cap deploy:updating', slow: true do
-  before do
-    install_test_app_with(config)
-  end
-
-  describe 'deploy' do
-    let(:config) {
-      %{
-        set :stage, :#{stage}
-        set :deploy_to, '#{deploy_to}'
-        set :repo_url, 'git://github.com/capistrano/capistrano.git'
-        set :branch, 'v3'
-        server 'localhost', roles: %w{web app}, user: '#{current_user}'
-        set :linked_files, %w{config/database.yml}
-        set :linked_dirs, %w{bin log public/system vendor/bundle}
-        }
-    }
-
-    describe 'symlink' do
-      before do
-        create_shared_directory('config')
-        create_shared_file('config/database.yml')
-        cap 'deploy'
-      end
-
-      describe 'linked_dirs' do
-        it 'symlinks the directories in shared to `current`' do
-          %w{bin log public/system vendor/bundle}.each do |dir|
-            expect(current_path.join(dir)).to be_a_symlink_to shared_path.join(dir)
-          end
-        end
-      end
-
-      describe 'linked_files' do
-        it 'symlinks the files in shared to `current`' do
-          file = 'config/database.yml'
-          expect(current_path.join(file)).to be_a_symlink_to shared_path.join(file)
-        end
-      end
-    end
-  end
-end

spec/integration/installation_spec.rb

@@ -1,76 +0,0 @@
-require 'integration_spec_helper'
-
-describe 'cap install' do
-
-  context 'with defaults' do
-    before :all do
-      create_test_app
-      Dir.chdir(test_app_path) do
-        %x[bundle exec cap install]
-      end
-    end
-
-    describe 'installation' do
-
-      it 'creates config/deploy' do
-        path = test_app_path.join('config/deploy')
-        expect(Dir.exists?(path)).to be_true
-      end
-
-      it 'creates lib/capistrano/tasks' do
-        path = test_app_path.join('lib/capistrano/tasks')
-        expect(Dir.exists?(path)).to be_true
-      end
-
-      it 'creates the deploy file' do
-        file = test_app_path.join('config/deploy.rb')
-        expect(File.exists?(file)).to be_true
-      end
-
-      it 'creates the stage files' do
-        staging = test_app_path.join('config/deploy/staging.rb')
-        production = test_app_path.join('config/deploy/production.rb')
-        expect(File.exists?(staging)).to be_true
-        expect(File.exists?(production)).to be_true
-      end
-
-    end
-  end
-
-  context 'with STAGES' do
-    before :all do
-      create_test_app
-      Dir.chdir(test_app_path) do
-        %x[bundle exec cap install STAGES=qa,production]
-      end
-    end
-
-    describe 'installation' do
-
-      it 'creates config/deploy' do
-        path = test_app_path.join('config/deploy')
-        expect(Dir.exists?(path)).to be_true
-      end
-
-      it 'creates lib/capistrano/tasks' do
-        path = test_app_path.join('lib/capistrano/tasks')
-        expect(Dir.exists?(path)).to be_true
-      end
-
-      it 'creates the deploy file' do
-        file = test_app_path.join('config/deploy.rb')
-        expect(File.exists?(file)).to be_true
-      end
-
-      it 'creates the stage files specified, not the defaults' do
-        qa = test_app_path.join('config/deploy/qa.rb')
-        production = test_app_path.join('config/deploy/production.rb')
-        staging = test_app_path.join('config/deploy/staging.rb')
-        expect(File.exists?(qa)).to be_true
-        expect(File.exists?(production)).to be_true
-        expect(File.exists?(staging)).to be_false
-      end
-
-    end
-  end
-end

spec/integration/remote_file_task_spec.rb

@@ -1,51 +0,0 @@
-require 'integration_spec_helper'
-
-describe 'cap deploy:started', slow: true do
-  before do
-    install_test_app_with(config)
-    copy_task_to_test_app('spec/support/tasks/database.cap')
-  end
-
-  let(:config) {
-    %{
-      set :stage, :#{stage}
-      set :deploy_to, '#{deploy_to}'
-      set :repo_url, 'git://github.com/capistrano/capistrano.git'
-      set :branch, 'v3'
-      server 'localhost', roles: %w{web app}, user: '#{current_user}'
-      set :linked_files, %w{config/database.yml}
-      set :linked_dirs, %w{config}
-    }
-  }
-
-  describe 'linked_files' do
-
-    before do
-      cap 'deploy:check:linked_dirs'
-    end
-
-    subject { cap 'deploy:check:linked_files' }
-
-    context 'where the file does not exist' do
-      it 'creates the file with the remote_task prerequisite' do
-        expect(subject).to match 'Uploading'
-        expect(subject).not_to match 'config/database.yml does not exist'
-        expect(subject).to match 'successful'
-      end
-    end
-
-    context 'where the file already exists' do
-      before do
-        FileUtils.touch(shared_path.join('config/database.yml'))
-      end
-
-      it 'will not recreate the file if it already exists' do
-        expect(subject).not_to match 'Uploading'
-        expect(subject).not_to match 'config/database.yml does not exist'
-        expect(subject).to match 'successful'
-      end
-    end
-
-  end
-end
-

spec/spec_helper.rb

@@ -12,5 +12,4 @@ RSpec.configure do |config|
   config.treat_symbols_as_metadata_keys_with_true_values = true
   config.mock_framework = :mocha
   config.order = 'random'
-  config.filter_run_excluding :slow
 end

spec/support/.gitignore

@@ -0,0 +1 @@
+.vagrant

spec/support/Vagrantfile

@@ -0,0 +1,13 @@
+Vagrant::Config.run do |config|
+
+  [:app].each_with_index do |role, i|
+    config.vm.define(role, primary: true) do |config|
+      config.vm.box = role
+      config.vm.box = 'precise64'
+      config.vm.box_url = 'http://files.vagrantup.com/precise64.box'
+      config.vm.forward_port 22, "222#{i}".to_i
+      config.vm.provision :shell, inline: 'yes | sudo apt-get install git-core'
+    end
+  end
+
+end

spec/support/test_app.rb

@@ -1,11 +1,40 @@
 require 'fileutils'
 module TestApp
-  def create_test_app
-    [test_app_path, deploy_to].each do |path|
-      FileUtils.rm_rf(path)
-      FileUtils.mkdir(path)
+  extend self
+
+  def install
+    install_test_app_with(default_config)
   end
 
+  def default_config
+    %{
+      set :stage, :#{stage}
+      set :deploy_to, '#{deploy_to}'
+      set :repo_url, 'git://github.com/capistrano/capistrano.git'
+      set :branch, 'v3'
+      set :ssh_options, { keys: "\#{ENV['HOME']}/.vagrant.d/insecure_private_key" }
+      server 'vagrant@localhost:2220', roles: %w{web app}
+      set :linked_files, #{linked_files}
+      set :linked_dirs, #{linked_dirs}
+    }
+  end
+
+  def linked_files
+    %w{config/database.yml}
+  end
+
+  def linked_file
+    shared_path.join(linked_files.first)
+  end
+
+  def linked_dirs
+    %w{bin log public/system vendor/bundle}
+  end
+
+  def create_test_app
+    FileUtils.rm_rf(test_app_path)
+    FileUtils.mkdir(test_app_path)
+
     File.open(gemfile, 'w+') do |file|
       file.write "gem 'capistrano', path: '#{path_to_cap}'"
     end
@@ -56,7 +85,7 @@ module TestApp
   end
 
   def deploy_to
-    Pathname.new('/tmp/test_app/deploy_to')
+    Pathname.new('/home/vagrant/var/www/deploy')
   end
 
   def shared_path
@@ -72,7 +101,15 @@ module TestApp
   end
 
   def release_path
-    releases_path.join(Dir.entries(releases_path).last)
+    releases_path.join(timestamp)
+  end
+
+  def timestamp
+    Time.now.utc.strftime("%Y%m%d%H%M%S")
+  end
+
+  def repo_path
+    deploy_to.join('repo')
   end
 
   def path_to_cap