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# -*- coding: utf-8 -*-
"""
jinja2.testsuite.loader
~~~~~~~~~~~~~~~~~~~~~~~
Test the loaders.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
"""
import os
import sys
import tempfile
import shutil
import unittest
from jinja2.testsuite import JinjaTestCase, dict_loader, \
package_loader, filesystem_loader, function_loader, \
choice_loader, prefix_loader
from jinja2 import Environment, loaders
from jinja2.loaders import split_template_path
from jinja2.exceptions import TemplateNotFound
class LoaderTestCase(JinjaTestCase):
def test_dict_loader(self):
env = Environment(loader=dict_loader)
tmpl = env.get_template('justdict.html')
assert tmpl.render().strip() == 'FOO'
self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
def test_package_loader(self):
env = Environment(loader=package_loader)
tmpl = env.get_template('test.html')
assert tmpl.render().strip() == 'BAR'
self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
def test_filesystem_loader(self):
env = Environment(loader=filesystem_loader)
tmpl = env.get_template('test.html')
assert tmpl.render().strip() == 'BAR'
tmpl = env.get_template('foo/test.html')
assert tmpl.render().strip() == 'FOO'
self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
def test_choice_loader(self):
env = Environment(loader=choice_loader)
tmpl = env.get_template('justdict.html')
assert tmpl.render().strip() == 'FOO'
tmpl = env.get_template('test.html')
assert tmpl.render().strip() == 'BAR'
self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
def test_function_loader(self):
env = Environment(loader=function_loader)
tmpl = env.get_template('justfunction.html')
assert tmpl.render().strip() == 'FOO'
self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
def test_prefix_loader(self):
env = Environment(loader=prefix_loader)
tmpl = env.get_template('a/test.html')
assert tmpl.render().strip() == 'BAR'
tmpl = env.get_template('b/justdict.html')
assert tmpl.render().strip() == 'FOO'
self.assert_raises(TemplateNotFound, env.get_template, 'missing')
def test_caching(self):
changed = False
class TestLoader(loaders.BaseLoader):
def get_source(self, environment, template):
return u'foo', None, lambda: not changed
env = Environment(loader=TestLoader(), cache_size=-1)
tmpl = env.get_template('template')
assert tmpl is env.get_template('template')
changed = True
assert tmpl is not env.get_template('template')
changed = False
env = Environment(loader=TestLoader(), cache_size=0)
assert env.get_template('template') \
is not env.get_template('template')
env = Environment(loader=TestLoader(), cache_size=2)
t1 = env.get_template('one')
t2 = env.get_template('two')
assert t2 is env.get_template('two')
assert t1 is env.get_template('one')
t3 = env.get_template('three')
assert 'one' in env.cache
assert 'two' not in env.cache
assert 'three' in env.cache
def test_split_template_path(self):
assert split_template_path('foo/bar') == ['foo', 'bar']
assert split_template_path('./foo/bar') == ['foo', 'bar']
self.assert_raises(TemplateNotFound, split_template_path, '../foo')
class ModuleLoaderTestCase(JinjaTestCase):
archive = None
def compile_down(self, zip='deflated', py_compile=False):
super(ModuleLoaderTestCase, self).setup()
log = []
self.reg_env = Environment(loader=prefix_loader)
if zip is not None:
self.archive = tempfile.mkstemp(suffix='.zip')[1]
else:
self.archive = tempfile.mkdtemp()
self.reg_env.compile_templates(self.archive, zip=zip,
log_function=log.append,
py_compile=py_compile)
self.mod_env = Environment(loader=loaders.ModuleLoader(self.archive))
return ''.join(log)
def teardown(self):
super(ModuleLoaderTestCase, self).teardown()
if hasattr(self, 'mod_env'):
if os.path.isfile(self.archive):
os.remove(self.archive)
else:
shutil.rmtree(self.archive)
self.archive = None
def test_log(self):
log = self.compile_down()
assert 'Compiled "a/foo/test.html" as ' \
'tmpl_a790caf9d669e39ea4d280d597ec891c4ef0404a' in log
assert 'Finished compiling templates' in log
assert 'Could not compile "a/syntaxerror.html": ' \
'Encountered unknown tag \'endif\'' in log
def _test_common(self):
tmpl1 = self.reg_env.get_template('a/test.html')
tmpl2 = self.mod_env.get_template('a/test.html')
assert tmpl1.render() == tmpl2.render()
tmpl1 = self.reg_env.get_template('b/justdict.html')
tmpl2 = self.mod_env.get_template('b/justdict.html')
assert tmpl1.render() == tmpl2.render()
def test_deflated_zip_compile(self):
self.compile_down(zip='deflated')
self._test_common()
def test_stored_zip_compile(self):
self.compile_down(zip='stored')
self._test_common()
def test_filesystem_compile(self):
self.compile_down(zip=None)
self._test_common()
def test_weak_references(self):
self.compile_down()
tmpl = self.mod_env.get_template('a/test.html')
key = loaders.ModuleLoader.get_template_key('a/test.html')
name = self.mod_env.loader.module.__name__
assert hasattr(self.mod_env.loader.module, key)
assert name in sys.modules
# unset all, ensure the module is gone from sys.modules
self.mod_env = tmpl = None
try:
import gc
gc.collect()
except:
pass
assert name not in sys.modules
def test_byte_compilation(self):
log = self.compile_down(py_compile=True)
assert 'Byte-compiled "a/test.html"' in log
tmpl1 = self.mod_env.get_template('a/test.html')
mod = self.mod_env.loader.module. \
tmpl_3c4ddf650c1a73df961a6d3d2ce2752f1b8fd490
assert mod.__file__.endswith('.pyc')
def test_choice_loader(self):
log = self.compile_down(py_compile=True)
assert 'Byte-compiled "a/test.html"' in log
self.mod_env.loader = loaders.ChoiceLoader([
self.mod_env.loader,
loaders.DictLoader({'DICT_SOURCE': 'DICT_TEMPLATE'})
])
tmpl1 = self.mod_env.get_template('a/test.html')
self.assert_equal(tmpl1.render(), 'BAR')
tmpl2 = self.mod_env.get_template('DICT_SOURCE')
self.assert_equal(tmpl2.render(), 'DICT_TEMPLATE')
def test_prefix_loader(self):
log = self.compile_down(py_compile=True)
assert 'Byte-compiled "a/test.html"' in log
self.mod_env.loader = loaders.PrefixLoader({
'MOD': self.mod_env.loader,
'DICT': loaders.DictLoader({'test.html': 'DICT_TEMPLATE'})
})
tmpl1 = self.mod_env.get_template('MOD/a/test.html')
self.assert_equal(tmpl1.render(), 'BAR')
tmpl2 = self.mod_env.get_template('DICT/test.html')
self.assert_equal(tmpl2.render(), 'DICT_TEMPLATE')
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(LoaderTestCase))
suite.addTest(unittest.makeSuite(ModuleLoaderTestCase))
return suite
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