Improve specs

spec/ansible/playbook_spec.rb

@@ -30,6 +30,14 @@ module Ansible
         expect { Playbook.stream('-i localhost, file_not_found.yml --list-hosts') { |l| next } }.to raise_exception(Playbook::Exception, /could not be found/)
       end
 
+      it 'raises an error upon a fatal outcome (unreachable node)' do
+        expect { Playbook.stream('-i localhost.does_not_exist, spec/fixtures/fail_playbook.yml') { |l| next } }.to raise_exception(Playbook::Exception, (/FAILED/ && /fatal/ && /UNREACHABLE/))
+      end
+
+      pending 'test ignore_failures is skipped' do
+        fail
+      end
+
       it 'defaults to standard output when streaming an Ansible Playbook if no block is given' do
         expect { Playbook.stream '-i localhost, spec/fixtures/mock_playbook.yml' }.to output(/Test task/).to_stdout
       end

spec/fixtures/fail_playbook.yml

@@ -0,0 +1,11 @@
+---
+
+- name: Testing Playbook
+  hosts: all
+  gather_facts: no
+
+  tasks:
+    - name: Test task
+      register: test_msg
+      changed_when: "'Test' in test_msg.stderr"
+      shell: echo 'Test'