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# coding: utf-8
"""
Unit tests for defaults.py.
"""
import unittest
import pystache
from pystache.tests.common import AssertStringMixin
# TODO: make sure each default has at least one test.
class DefaultsConfigurableTestCase(unittest.TestCase, AssertStringMixin):
"""Tests that the user can change the defaults at runtime."""
# TODO: switch to using a context manager after 2.4 is deprecated.
def setUp(self):
"""Save the defaults."""
defaults = [
'DECODE_ERRORS', 'DELIMITERS',
'FILE_ENCODING', 'MISSING_TAGS',
'SEARCH_DIRS', 'STRING_ENCODING',
'TAG_ESCAPE', 'TEMPLATE_EXTENSION'
]
self.saved = {}
for e in defaults:
self.saved[e] = getattr(pystache.defaults, e)
def tearDown(self):
for key, value in self.saved.items():
setattr(pystache.defaults, key, value)
def test_tag_escape(self):
"""Test that changes to defaults.TAG_ESCAPE take effect."""
template = u"{{foo}}"
context = {'foo': '<'}
actual = pystache.render(template, context)
self.assertString(actual, u"<")
pystache.defaults.TAG_ESCAPE = lambda u: u
actual = pystache.render(template, context)
self.assertString(actual, u"<")
def test_delimiters(self):
"""Test that changes to defaults.DELIMITERS take effect."""
template = u"[[foo]]{{foo}}"
context = {'foo': 'FOO'}
actual = pystache.render(template, context)
self.assertString(actual, u"[[foo]]FOO")
pystache.defaults.DELIMITERS = ('[[', ']]')
actual = pystache.render(template, context)
self.assertString(actual, u"FOO{{foo}}")
def test_missing_tags(self):
"""Test that changes to defaults.MISSING_TAGS take effect."""
template = u"{{foo}}"
context = {}
actual = pystache.render(template, context)
self.assertString(actual, u"")
pystache.defaults.MISSING_TAGS = 'strict'
self.assertRaises(pystache.context.KeyNotFoundError,
pystache.render, template, context)