(MODULES-3829) Add tests for ensure_resources

Prior to this commit, we didn't have tests for the ensure_resources
function (only for the ensure_resource function). This meant that
we weren't catching a bug in the ensure_resources function. In order
to prevent this in the future, add some tests which test the
specific functionality of ensure_resources.

Author: HAIL9000

spec/functions/ensure_resources_spec.rb

@@ -0,0 +1,23 @@
+require 'spec_helper'
+
+describe 'ensure_resources' do
+  describe 'given a title hash of multiple resources' do
+    before { subject.call(['user', {'dan' => { 'gid' => 'mygroup', 'uid' => '600' },  'alex' => { 'gid' => 'mygroup', 'uid' => '700' }}, {'ensure' => 'present'}]) }
+
+    it { expect(lambda { catalogue }).to contain_user('dan').with_uid('600') }
+    it { expect(lambda { catalogue }).to contain_user('dan').with_gid('mygroup') }
+    it { expect(lambda { catalogue }).to contain_user('dan').with_ensure('present') }
+
+    it { expect(lambda { catalogue }).to contain_user('alex').with_uid('700') }
+    it { expect(lambda { catalogue }).to contain_user('alex').with_gid('mygroup') }
+    it { expect(lambda { catalogue }).to contain_user('alex').with_ensure('present') }
+  end
+
+  describe 'given a title hash of a single resource' do
+    before { subject.call(['user', {'dan' => { 'gid' => 'mygroup', 'uid' => '600' }}, {'ensure' => 'present'}]) }
+
+    it { expect(lambda { catalogue }).to contain_user('dan').with_uid('600') }
+    it { expect(lambda { catalogue }).to contain_user('dan').with_gid('mygroup') }
+    it { expect(lambda { catalogue }).to contain_user('dan').with_ensure('present') }
+  end
+end