Implement some initial sanity checks using Bats

Somehow related to GH-1

spec/acceptance/fixtures/auto-detect-with-provisioning.rb

@@ -0,0 +1,9 @@
+Vagrant.require_plugin 'vagrant-cachier'
+Vagrant.require_plugin 'vagrant-lxc'
+Vagrant.configure("2") do |config|
+  config.cache.auto_detect = true
+  config.cache.scope = :machine
+
+  config.vm.box = 'raring64'
+  config.vm.provision :shell, inline: 'apt-get update && apt-get install -y git'
+end

spec/acceptance/fixtures/auto-detect.rb

@@ -0,0 +1,7 @@
+Vagrant.require_plugin 'vagrant-cachier'
+Vagrant.require_plugin 'vagrant-lxc'
+Vagrant.configure("2") do |config|
+  config.cache.auto_detect = true
+  config.vm.box = 'quantal64'
+  config.vm.provision :shell, inline: 'echo Hello!'
+end

spec/acceptance/fixtures/no-cachier-simple.rb

@@ -0,0 +1,5 @@
+Vagrant.require_plugin 'vagrant-cachier'
+Vagrant.require_plugin 'vagrant-lxc'
+Vagrant.configure("2") do |config|
+  config.vm.box = 'quantal64'
+end

spec/acceptance/fixtures/no-cachier-with-provisioning.rb

@@ -0,0 +1,6 @@
+Vagrant.require_plugin 'vagrant-cachier'
+Vagrant.require_plugin 'vagrant-lxc'
+Vagrant.configure("2") do |config|
+  config.vm.box = 'quantal64'
+  config.vm.provision :shell, inline: 'echo Hello!'
+end

spec/acceptance/sanity_check.bats

@@ -0,0 +1,45 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "Vagrantfile without cachier statement does not blow up when bringing the VM up" {
+  configure_env "no-cachier-simple.rb"
+  vagrant_up
+  [ "$status" -eq 0 ]
+  vagrant_destroy
+
+  configure_env "no-cachier-with-provisioning.rb"
+  vagrant_up
+  [ "$status" -eq 0 ]
+  vagrant_destroy
+}
+
+@test "Vagrantfile with cachier auto_detect statement does not blow up when bringing the VM up" {
+  configure_env "auto-detect.rb"
+  vagrant_up
+  [ "$status" -eq 0 ]
+  vagrant_destroy
+}
+
+@test "APT cache bucket configures the cache dir properly and keeps cache dir around" {
+  configure_env "auto-detect-with-provisioning.rb"
+
+  # Make sure cache dir does not exist
+  test ! -d tmp/.vagrant/machines/default/cache/apt
+
+  vagrant_up
+  [ "$status" -eq 0 ]
+
+  # Make sure packages are being cached
+  test -d tmp/.vagrant/machines/default/cache/apt
+  FILES=(`ls tmp/.vagrant/machines/default/cache/apt/git*.deb`)
+  [ ${#FILES[@]} -gt 0 ]
+
+  vagrant_destroy
+
+  # Make sure packages are not removed between machine rebuilds
+  FILES=(`ls tmp/.vagrant/machines/default/cache/apt/git*.deb`)
+  [ ${#FILES[@]} -gt 0 ]
+
+  empty_cache
+}

spec/acceptance/test_helper.bash

@@ -0,0 +1,26 @@
+vagrant_up() {
+  pushd tmp
+    run bundle exec vagrant up > /tmp/vagrant-cachier-tests.log
+  popd
+}
+
+vagrant_destroy() {
+  pushd tmp
+    run bundle exec vagrant destroy -f
+  popd
+}
+
+configure_env() {
+  fixture=$1
+
+  mkdir -p tmp/
+  cp spec/acceptance/fixtures/${fixture} tmp/Vagrantfile
+
+  vagrant_destroy
+  [ "$status" -eq 0 ]
+  rm -rf tmp/.vagrant
+}
+
+empty_cache() {
+  rm -rf tmp/.vagrant/cache
+}