add an acceptance test for apt::backports

diff --git a/spec/acceptance/apt_backports_spec.rb b/spec/acceptance/apt_backports_spec.rb
new file mode 100644 (file)
index 0000000..5c4dcce
--- /dev/null
+++ b/spec/acceptance/apt_backports_spec.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require 'spec_helper_acceptance'
+
+describe 'apt::backports' do
+  context 'when using defaults' do
+    let(:pp) do
+      <<-MANIFEST
+        include apt::backports
+      MANIFEST
+    end
+
+    it 'applies idempotently' do
+      idempotent_apply(pp)
+    end
+
+    it 'provides backports apt sources' do
+      run_shell('apt policy | grep --quiet backports')
+    end
+  end
+end