ansible/test/units/template/test_templar.py

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# (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 jinja2.runtime import Context
from units.compat import unittest
from units.compat.mock import patch
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from ansible import constants as C
from ansible.errors import AnsibleError, AnsibleUndefinedVariable
from ansible.module_utils.six import string_types
from ansible.template import Templar, AnsibleContext, AnsibleEnvironment
from ansible.utils.unsafe_proxy import AnsibleUnsafe, wrap_var
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from units.mock.loader import DictDataLoader
class BaseTemplar(object):
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def setUp(self):
self.test_vars = dict(
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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}}",
some_var="blip",
some_static_var="static_blip",
some_keyword="{{ foo }}",
some_unsafe_var=wrap_var("unsafe_blip"),
some_static_unsafe_var=wrap_var("static_unsafe_blip"),
some_unsafe_keyword=wrap_var("{{ foo }}"),
str_with_error="{{ 'str' | from_json }}",
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)
self.fake_loader = DictDataLoader({
"/path/to/my_file.txt": "foo\n",
})
self.templar = Templar(loader=self.fake_loader, variables=self.test_vars)
def is_unsafe(self, obj):
if obj is None:
return False
if hasattr(obj, '__UNSAFE__'):
return True
if isinstance(obj, AnsibleUnsafe):
return True
if isinstance(obj, dict):
for key in obj.keys():
if self.is_unsafe(key) or self.is_unsafe(obj[key]):
return True
if isinstance(obj, list):
for item in obj:
if self.is_unsafe(item):
return True
if isinstance(obj, string_types) and hasattr(obj, '__UNSAFE__'):
return True
return False
# class used for testing arbitrary objects passed to template
class SomeClass(object):
foo = 'bar'
def __init__(self):
self.blip = 'blip'
class SomeUnsafeClass(AnsibleUnsafe):
def __init__(self):
super(SomeUnsafeClass, self).__init__()
self.blip = 'unsafe blip'
class TestTemplarTemplate(BaseTemplar, unittest.TestCase):
def test_lookup_jinja_dict_key_in_static_vars(self):
res = self.templar.template("{'some_static_var': '{{ some_var }}'}",
static_vars=['some_static_var'])
# self.assertEqual(res['{{ a_keyword }}'], "blip")
print(res)
def test_is_possibly_template_true(self):
tests = [
'{{ foo }}',
'{% foo %}',
'{# foo #}',
'{# {{ foo }} #}',
'{# {{ nothing }} {# #}',
'{# {{ nothing }} {# #} #}',
'{% raw %}{{ foo }}{% endraw %}',
'{{',
'{%',
'{#',
'{% raw',
]
for test in tests:
self.assertTrue(self.templar.is_possibly_template(test))
def test_is_possibly_template_false(self):
tests = [
'{',
'%',
'#',
'foo',
'}}',
'%}',
'raw %}',
'#}',
]
for test in tests:
self.assertFalse(self.templar.is_possibly_template(test))
def test_is_possible_template(self):
"""This test ensures that a broken template still gets templated"""
# Purposefully invalid jinja
self.assertRaises(AnsibleError, self.templar.template, '{{ foo|default(False)) }}')
def test_is_template_true(self):
tests = [
'{{ foo }}',
'{% foo %}',
'{# foo #}',
'{# {{ foo }} #}',
'{# {{ nothing }} {# #}',
'{# {{ nothing }} {# #} #}',
'{% raw %}{{ foo }}{% endraw %}',
]
for test in tests:
self.assertTrue(self.templar.is_template(test))
def test_is_template_false(self):
tests = [
'foo',
'{{ foo',
'{% foo',
'{# foo',
'{{ foo %}',
'{{ foo #}',
'{% foo }}',
'{% foo #}',
'{# foo %}',
'{# foo }}',
'{{ foo {{',
'{% raw %}{% foo %}',
]
for test in tests:
self.assertFalse(self.templar.is_template(test))
def test_is_template_raw_string(self):
res = self.templar.is_template('foo')
self.assertFalse(res)
def test_is_template_none(self):
res = self.templar.is_template(None)
self.assertFalse(res)
def test_template_convert_bare_string(self):
res = self.templar.template('foo', convert_bare=True)
self.assertEqual(res, 'bar')
def test_template_convert_bare_nested(self):
res = self.templar.template('bam', convert_bare=True)
self.assertEqual(res, 'bar')
def test_template_convert_bare_unsafe(self):
res = self.templar.template('some_unsafe_var', convert_bare=True)
self.assertEqual(res, 'unsafe_blip')
# self.assertIsInstance(res, AnsibleUnsafe)
self.assertTrue(self.is_unsafe(res), 'returned value from template.template (%s) is not marked unsafe' % res)
def test_template_convert_bare_filter(self):
res = self.templar.template('bam|capitalize', convert_bare=True)
self.assertEqual(res, 'Bar')
def test_template_convert_bare_filter_unsafe(self):
res = self.templar.template('some_unsafe_var|capitalize', convert_bare=True)
self.assertEqual(res, 'Unsafe_blip')
# self.assertIsInstance(res, AnsibleUnsafe)
self.assertTrue(self.is_unsafe(res), 'returned value from template.template (%s) is not marked unsafe' % res)
def test_template_convert_data(self):
res = self.templar.template('{{foo}}', convert_data=True)
self.assertTrue(res)
self.assertEqual(res, 'bar')
@patch('ansible.template.safe_eval', side_effect=AnsibleError)
def test_template_convert_data_template_in_data(self, mock_safe_eval):
res = self.templar.template('{{bam}}', convert_data=True)
self.assertTrue(res)
self.assertEqual(res, 'bar')
def test_template_convert_data_bare(self):
res = self.templar.template('bam', convert_data=True)
self.assertTrue(res)
self.assertEqual(res, 'bam')
def test_template_convert_data_to_json(self):
res = self.templar.template('{{bam|to_json}}', convert_data=True)
self.assertTrue(res)
self.assertEqual(res, '"bar"')
def test_template_convert_data_convert_bare_data_bare(self):
res = self.templar.template('bam', convert_data=True, convert_bare=True)
self.assertTrue(res)
self.assertEqual(res, 'bar')
def test_template_unsafe_non_string(self):
unsafe_obj = AnsibleUnsafe()
res = self.templar.template(unsafe_obj)
self.assertTrue(self.is_unsafe(res), 'returned value from template.template (%s) is not marked unsafe' % res)
def test_template_unsafe_non_string_subclass(self):
unsafe_obj = SomeUnsafeClass()
res = self.templar.template(unsafe_obj)
self.assertTrue(self.is_unsafe(res), 'returned value from template.template (%s) is not marked unsafe' % res)
def test_weird(self):
data = u'''1 2 #}huh{# %}ddfg{% }}dfdfg{{ {%what%} {{#foo#}} {%{bar}%} {#%blip%#} {{asdfsd%} 3 4 {{foo}} 5 6 7'''
self.assertRaisesRegexp(AnsibleError,
'template error while templating string',
self.templar.template,
data)
def test_template_with_error(self):
"""Check that AnsibleError is raised, fail if an unhandled exception is raised"""
self.assertRaises(AnsibleError, self.templar.template, "{{ str_with_error }}")
class TestTemplarMisc(BaseTemplar, unittest.TestCase):
def test_templar_simple(self):
templar = self.templar
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# test some basic templating
self.assertEqual(templar.template("{{foo}}"), "bar")
self.assertEqual(templar.template("{{foo}}\n"), "bar\n")
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self.assertEqual(templar.template("{{foo}}\n", preserve_trailing_newlines=True), "bar\n")
self.assertEqual(templar.template("{{foo}}\n", preserve_trailing_newlines=False), "bar")
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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])
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self.assertEqual(templar.template(1, convert_bare=True), 1)
# force errors
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self.assertRaises(AnsibleUndefinedVariable, templar.template, "{{bad_var}}")
self.assertRaises(AnsibleUndefinedVariable, templar.template, "{{lookup('file', bad_var)}}")
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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}}")
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# test setting available_variables
templar.available_variables = dict(foo="bam")
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self.assertEqual(templar.template("{{foo}}"), "bam")
# variables must be a dict() for available_variables setter
# FIXME Use assertRaises() as a context manager (added in 2.7) once we do not run tests on Python 2.6 anymore.
try:
templar.available_variables = "foo=bam"
except AssertionError:
pass
except Exception as e:
self.fail(e)
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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")
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def test_template_jinja2_extensions(self):
fake_loader = DictDataLoader({})
templar = Templar(loader=fake_loader)
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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
class TestTemplarLookup(BaseTemplar, unittest.TestCase):
def test_lookup_missing_plugin(self):
self.assertRaisesRegexp(AnsibleError,
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r'lookup plugin \(not_a_real_lookup_plugin\) not found',
self.templar._lookup,
'not_a_real_lookup_plugin',
'an_arg', a_keyword_arg='a_keyword_arg_value')
def test_lookup_list(self):
res = self.templar._lookup('list', 'an_arg', 'another_arg')
self.assertEqual(res, 'an_arg,another_arg')
def test_lookup_jinja_undefined(self):
self.assertRaisesRegexp(AnsibleUndefinedVariable,
"'an_undefined_jinja_var' is undefined",
self.templar._lookup,
'list', '{{ an_undefined_jinja_var }}')
def test_lookup_jinja_defined(self):
res = self.templar._lookup('list', '{{ some_var }}')
self.assertTrue(self.is_unsafe(res))
# self.assertIsInstance(res, AnsibleUnsafe)
def test_lookup_jinja_dict_string_passed(self):
self.assertRaisesRegexp(AnsibleError,
"with_dict expects a dict",
self.templar._lookup,
'dict',
'{{ some_var }}')
def test_lookup_jinja_dict_list_passed(self):
self.assertRaisesRegexp(AnsibleError,
"with_dict expects a dict",
self.templar._lookup,
'dict',
['foo', 'bar'])
def test_lookup_jinja_kwargs(self):
res = self.templar._lookup('list', 'blip', random_keyword='12345')
self.assertTrue(self.is_unsafe(res))
# self.assertIsInstance(res, AnsibleUnsafe)
def test_lookup_jinja_list_wantlist(self):
res = self.templar._lookup('list', '{{ some_var }}', wantlist=True)
self.assertEqual(res, ["blip"])
def test_lookup_jinja_list_wantlist_undefined(self):
self.assertRaisesRegexp(AnsibleUndefinedVariable,
"'some_undefined_var' is undefined",
self.templar._lookup,
'list',
'{{ some_undefined_var }}',
wantlist=True)
def test_lookup_jinja_list_wantlist_unsafe(self):
res = self.templar._lookup('list', '{{ some_unsafe_var }}', wantlist=True)
for lookup_result in res:
self.assertTrue(self.is_unsafe(lookup_result))
# self.assertIsInstance(lookup_result, AnsibleUnsafe)
# Should this be an AnsibleUnsafe
# self.assertIsInstance(res, AnsibleUnsafe)
def test_lookup_jinja_dict(self):
res = self.templar._lookup('list', {'{{ a_keyword }}': '{{ some_var }}'})
self.assertEqual(res['{{ a_keyword }}'], "blip")
# TODO: Should this be an AnsibleUnsafe
# self.assertIsInstance(res['{{ a_keyword }}'], AnsibleUnsafe)
# self.assertIsInstance(res, AnsibleUnsafe)
def test_lookup_jinja_dict_unsafe(self):
res = self.templar._lookup('list', {'{{ some_unsafe_key }}': '{{ some_unsafe_var }}'})
self.assertTrue(self.is_unsafe(res['{{ some_unsafe_key }}']))
# self.assertIsInstance(res['{{ some_unsafe_key }}'], AnsibleUnsafe)
# TODO: Should this be an AnsibleUnsafe
# self.assertIsInstance(res, AnsibleUnsafe)
def test_lookup_jinja_dict_unsafe_value(self):
res = self.templar._lookup('list', {'{{ a_keyword }}': '{{ some_unsafe_var }}'})
self.assertTrue(self.is_unsafe(res['{{ a_keyword }}']))
# self.assertIsInstance(res['{{ a_keyword }}'], AnsibleUnsafe)
# TODO: Should this be an AnsibleUnsafe
# self.assertIsInstance(res, AnsibleUnsafe)
def test_lookup_jinja_none(self):
res = self.templar._lookup('list', None)
self.assertIsNone(res)
class TestAnsibleContext(BaseTemplar, unittest.TestCase):
def _context(self, variables=None):
variables = variables or {}
env = AnsibleEnvironment()
context = AnsibleContext(env, parent={}, name='some_context',
blocks={})
for key, value in variables.items():
context.vars[key] = value
return context
def test(self):
context = self._context()
self.assertIsInstance(context, AnsibleContext)
self.assertIsInstance(context, Context)
def test_resolve_unsafe(self):
context = self._context(variables={'some_unsafe_key': wrap_var('some_unsafe_string')})
res = context.resolve('some_unsafe_key')
# self.assertIsInstance(res, AnsibleUnsafe)
self.assertTrue(self.is_unsafe(res),
'return of AnsibleContext.resolve (%s) was expected to be marked unsafe but was not' % res)
def test_resolve_unsafe_list(self):
context = self._context(variables={'some_unsafe_key': [wrap_var('some unsafe string 1')]})
res = context.resolve('some_unsafe_key')
# self.assertIsInstance(res[0], AnsibleUnsafe)
self.assertTrue(self.is_unsafe(res),
'return of AnsibleContext.resolve (%s) was expected to be marked unsafe but was not' % res)
def test_resolve_unsafe_dict(self):
context = self._context(variables={'some_unsafe_key':
{'an_unsafe_dict': wrap_var('some unsafe string 1')}
})
res = context.resolve('some_unsafe_key')
self.assertTrue(self.is_unsafe(res['an_unsafe_dict']),
'return of AnsibleContext.resolve (%s) was expected to be marked unsafe but was not' % res['an_unsafe_dict'])
def test_resolve(self):
context = self._context(variables={'some_key': 'some_string'})
res = context.resolve('some_key')
self.assertEqual(res, 'some_string')
# self.assertNotIsInstance(res, AnsibleUnsafe)
self.assertFalse(self.is_unsafe(res),
'return of AnsibleContext.resolve (%s) was not expected to be marked unsafe but was' % res)
def test_resolve_none(self):
context = self._context(variables={'some_key': None})
res = context.resolve('some_key')
self.assertEqual(res, None)
# self.assertNotIsInstance(res, AnsibleUnsafe)
self.assertFalse(self.is_unsafe(res),
'return of AnsibleContext.resolve (%s) was not expected to be marked unsafe but was' % res)