Add testcase for first_available_file

test/TestPlayBook.py

@@ -130,7 +130,7 @@ class TestPlaybook(unittest.TestCase):
        return result
 
    def test_one(self):
-       pb = os.path.join(self.test_dir, 'playbook1.yml')
+       pb = 'test/playbook1.yml'
        actual = self._run(pb)
 
        # if different, this will output to screen

test/playbook1.yml

@@ -41,7 +41,10 @@
 # not be triggered twice because it's already triggered
 
   - name: test template
-    action: template src=sample.j2 dest=/tmp/ansible_test_data_template.out
+    action: template src=$item dest=/tmp/ansible_test_data_template.out
+    first_available_file:
+    - nonexistantfile
+    - sample.j2
     notify:
     - on change 1
     - on change 2