[tests] Use beaker+docker for acceptance tests

Beaker together with docker is a very fast way to do
acceptance testing.
This commit adds basic beaker/docker support:

- Add a debian jessie nodeset
- Test if the module applies idempotentially, so it doesn't
  change resources on a second run with the same parameters.

https://github.com/puppetlabs/beaker/blob/master/docs/Docker-Support.md

1 files changed, 21 insertions, 0 deletions

diff --git a/spec/acceptance/apt_spec.rb b/spec/acceptance/apt_spec.rb
new file mode 100644
index 0000000..a976a56
--- /dev/null
+++ b/spec/acceptance/apt_spec.rb
@@ -0,0 +1,21 @@
+require 'spec_helper_acceptance'
+
+describe 'apt class' do
+
+  context 'default parameters' do
+    it 'should work idempotently with no errors' do
+      pp = <<-EOS
+        class { 'apt': }
+      EOS
+
+      # Run it twice and test for idempotency
+      apply_manifest(pp, :catch_failures => true)
+      apply_manifest(pp, :catch_changes  => true)
+    end
+
+    describe package('apt') do
+      it { is_expected.to be_installed }
+    end
+
+  end
+end