text: # (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
  #
  # This file is part of Ansible
  #
  # Ansible is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # Ansible is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
  
  # Make coding more python3-ish
  from __future__ import (absolute_import, division, print_function)
  __metaclass__ = type
  
  from ansible.compat.tests import unittest
  from ansible.compat.tests.mock import patch, MagicMock
  
  from ansible import constants as C
  from ansible.errors import *
  from ansible.plugins import filter_loader, lookup_loader, module_loader
  from ansible.plugins.strategy import SharedPluginLoaderObj
  from ansible.template import Templar
  
  from units.mock.loader import DictDataLoader
  
  class TestTemplar(unittest.TestCase):
  
      def setUp(self):
          fake_loader = DictDataLoader({
            "/path/to/my_file.txt": "foo\n",
          })
          shared_loader = SharedPluginLoaderObj()
          variables = dict(
              foo="bar",
              bam="{{foo}}",
              num=1,
              var_true=True,
              var_false=False,
              var_dict=dict(a="b"),
              bad_dict="{a='b'",
              var_list=[1],
              recursive="{{recursive}}",
          )
          self.templar = Templar(loader=fake_loader, variables=variables)
  
      def tearDown(self):
          pass
  
      def test_templar_simple(self):
  
          templar = self.templar
          # test some basic templating
          self.assertEqual(templar.template("{{foo}}"), "bar")
          self.assertEqual(templar.template("{{foo}}\n"), "bar\n")
          self.assertEqual(templar.template("{{foo}}\n", preserve_trailing_newlines=True), "bar\n")
          self.assertEqual(templar.template("{{foo}}\n", preserve_trailing_newlines=False), "bar")
          self.assertEqual(templar.template("foo", convert_bare=True), "bar")
          self.assertEqual(templar.template("{{bam}}"), "bar")
          self.assertEqual(templar.template("{{num}}"), 1)
          self.assertEqual(templar.template("{{var_true}}"), True)
          self.assertEqual(templar.template("{{var_false}}"), False)
          self.assertEqual(templar.template("{{var_dict}}"), dict(a="b"))
          self.assertEqual(templar.template("{{bad_dict}}"), "{a='b'")
          self.assertEqual(templar.template("{{var_list}}"), [1])
          self.assertEqual(templar.template(1, convert_bare=True), 1)
  
          # force errors
          self.assertRaises(AnsibleUndefinedVariable, templar.template, "{{bad_var}}")
          self.assertRaises(AnsibleUndefinedVariable, templar.template, "{{lookup('file', bad_var)}}")
          self.assertRaises(AnsibleError, templar.template, "{{lookup('bad_lookup')}}")
          self.assertRaises(AnsibleError, templar.template, "{{recursive}}")
          self.assertRaises(AnsibleUndefinedVariable, templar.template, "{{foo-bar}}")
  
          # test with fail_on_undefined=False
          self.assertEqual(templar.template("{{bad_var}}", fail_on_undefined=False), "{{bad_var}}")
  
          # test set_available_variables()
          templar.set_available_variables(variables=dict(foo="bam"))
          self.assertEqual(templar.template("{{foo}}"), "bam")
          # variables must be a dict() for set_available_variables()
          self.assertRaises(AssertionError, templar.set_available_variables, "foo=bam")
  
      def test_templar_escape_backslashes(self):
          # Rule of thumb: If escape backslashes is True you should end up with
          # the same number of backslashes as when you started.
          self.assertEqual(self.templar.template("\t{{foo}}", escape_backslashes=True), "\tbar")
          self.assertEqual(self.templar.template("\t{{foo}}", escape_backslashes=False), "\tbar")
          self.assertEqual(self.templar.template("\\{{foo}}", escape_backslashes=True), "\\bar")
          self.assertEqual(self.templar.template("\\{{foo}}", escape_backslashes=False), "\\bar")
          self.assertEqual(self.templar.template("\\{{foo + '\t' }}", escape_backslashes=True), "\\bar\t")
          self.assertEqual(self.templar.template("\\{{foo + '\t' }}", escape_backslashes=False), "\\bar\t")
          self.assertEqual(self.templar.template("\\{{foo + '\\t' }}", escape_backslashes=True), "\\bar\\t")
          self.assertEqual(self.templar.template("\\{{foo + '\\t' }}", escape_backslashes=False), "\\bar\t")
          self.assertEqual(self.templar.template("\\{{foo + '\\\\t' }}", escape_backslashes=True), "\\bar\\\\t")
          self.assertEqual(self.templar.template("\\{{foo + '\\\\t' }}", escape_backslashes=False), "\\bar\\t")
  
      def test_template_jinja2_extensions(self):
          fake_loader = DictDataLoader({})
          templar = Templar(loader=fake_loader)
          
          old_exts = C.DEFAULT_JINJA2_EXTENSIONS
          try:
              C.DEFAULT_JINJA2_EXTENSIONS = "foo,bar"
              self.assertEqual(templar._get_extensions(), ['foo', 'bar'])
          finally:
              C.DEFAULT_JINJA2_EXTENSIONS = old_exts
  
  