conditional: fix direct boolean "shortcut" (#47941)

* conditional: fix direct boolean "shortcut"

* Add unit tests

test/units/playbook/test_conditional.py

@@ -1,6 +1,7 @@
 
 from units.compat import unittest
 from units.mock.loader import DictDataLoader
+from units.compat.mock import MagicMock
 
 from ansible.plugins.strategy import SharedPluginLoaderObj
 from ansible.template import Templar
@@ -33,6 +34,20 @@ class TestConditional(unittest.TestCase):
         ret = self._eval_con(when, {})
         self.assertTrue(ret)
 
+    def test_true_boolean(self):
+        self.cond.when = [True]
+        m = MagicMock()
+        ret = self.cond.evaluate_conditional(m, {})
+        self.assertTrue(ret)
+        self.assertFalse(m.is_template.called)
+
+    def test_false_boolean(self):
+        self.cond.when = [False]
+        m = MagicMock()
+        ret = self.cond.evaluate_conditional(m, {})
+        self.assertFalse(ret)
+        self.assertFalse(m.is_template.called)
+
     def test_undefined(self):
         when = [u"{{ some_undefined_thing }}"]
         self.assertRaisesRegexp(errors.AnsibleError, "The conditional check '{{ some_undefined_thing }}' failed",