lib/jinja2/testsuite/loader.py

   1 # -*- coding: utf-8 -*-
   2 """
   3     jinja2.testsuite.loader
   4     ~~~~~~~~~~~~~~~~~~~~~~~
   5
   6     Test the loaders.
   7
   8     :copyright: (c) 2010 by the Jinja Team.
   9     :license: BSD, see LICENSE for more details.
  10 """
  11 import os
  12 import sys
  13 import tempfile
  14 import shutil
  15 import unittest
  16
  17 from jinja2.testsuite import JinjaTestCase, dict_loader, \
  18      package_loader, filesystem_loader, function_loader, \
  19      choice_loader, prefix_loader
  20
  21 from jinja2 import Environment, loaders
  22 from jinja2.loaders import split_template_path
  23 from jinja2.exceptions import TemplateNotFound
  24
  25
  26 class LoaderTestCase(JinjaTestCase):
  27
  28     def test_dict_loader(self):
  29         env = Environment(loader=dict_loader)
  30         tmpl = env.get_template('justdict.html')
  31         assert tmpl.render().strip() == 'FOO'
  32         self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
  33
  34     def test_package_loader(self):
  35         env = Environment(loader=package_loader)
  36         tmpl = env.get_template('test.html')
  37         assert tmpl.render().strip() == 'BAR'
  38         self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
  39
  40     def test_filesystem_loader(self):
  41         env = Environment(loader=filesystem_loader)
  42         tmpl = env.get_template('test.html')
  43         assert tmpl.render().strip() == 'BAR'
  44         tmpl = env.get_template('foo/test.html')
  45         assert tmpl.render().strip() == 'FOO'
  46         self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
  47
  48     def test_choice_loader(self):
  49         env = Environment(loader=choice_loader)
  50         tmpl = env.get_template('justdict.html')
  51         assert tmpl.render().strip() == 'FOO'
  52         tmpl = env.get_template('test.html')
  53         assert tmpl.render().strip() == 'BAR'
  54         self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
  55
  56     def test_function_loader(self):
  57         env = Environment(loader=function_loader)
  58         tmpl = env.get_template('justfunction.html')
  59         assert tmpl.render().strip() == 'FOO'
  60         self.assert_raises(TemplateNotFound, env.get_template, 'missing.html')
  61
  62     def test_prefix_loader(self):
  63         env = Environment(loader=prefix_loader)
  64         tmpl = env.get_template('a/test.html')
  65         assert tmpl.render().strip() == 'BAR'
  66         tmpl = env.get_template('b/justdict.html')
  67         assert tmpl.render().strip() == 'FOO'
  68         self.assert_raises(TemplateNotFound, env.get_template, 'missing')
  69
  70     def test_caching(self):
  71         changed = False
  72         class TestLoader(loaders.BaseLoader):
  73             def get_source(self, environment, template):
  74                 return u'foo', None, lambda: not changed
  75         env = Environment(loader=TestLoader(), cache_size=-1)
  76         tmpl = env.get_template('template')
  77         assert tmpl is env.get_template('template')
  78         changed = True
  79         assert tmpl is not env.get_template('template')
  80         changed = False
  81
  82         env = Environment(loader=TestLoader(), cache_size=0)
  83         assert env.get_template('template') \
  84                is not env.get_template('template')
  85
  86         env = Environment(loader=TestLoader(), cache_size=2)
  87         t1 = env.get_template('one')
  88         t2 = env.get_template('two')
  89         assert t2 is env.get_template('two')
  90         assert t1 is env.get_template('one')
  91         t3 = env.get_template('three')
  92         assert 'one' in env.cache
  93         assert 'two' not in env.cache
  94         assert 'three' in env.cache
  95
  96     def test_split_template_path(self):
  97         assert split_template_path('foo/bar') == ['foo', 'bar']
  98         assert split_template_path('./foo/bar') == ['foo', 'bar']
  99         self.assert_raises(TemplateNotFound, split_template_path, '../foo')
 100
 101
 102 class ModuleLoaderTestCase(JinjaTestCase):
 103     archive = None
 104
 105     def compile_down(self, zip='deflated', py_compile=False):
 106         super(ModuleLoaderTestCase, self).setup()
 107         log = []
 108         self.reg_env = Environment(loader=prefix_loader)
 109         if zip is not None:
 110             self.archive = tempfile.mkstemp(suffix='.zip')[1]
 111         else:
 112             self.archive = tempfile.mkdtemp()
 113         self.reg_env.compile_templates(self.archive, zip=zip,
 114                                        log_function=log.append,
 115                                        py_compile=py_compile)
 116         self.mod_env = Environment(loader=loaders.ModuleLoader(self.archive))
 117         return ''.join(log)
 118
 119     def teardown(self):
 120         super(ModuleLoaderTestCase, self).teardown()
 121         if hasattr(self, 'mod_env'):
 122             if os.path.isfile(self.archive):
 123                 os.remove(self.archive)
 124             else:
 125                 shutil.rmtree(self.archive)
 126             self.archive = None
 127
 128     def test_log(self):
 129         log = self.compile_down()
 130         assert 'Compiled "a/foo/test.html" as ' \
 131                'tmpl_a790caf9d669e39ea4d280d597ec891c4ef0404a' in log
 132         assert 'Finished compiling templates' in log
 133         assert 'Could not compile "a/syntaxerror.html": ' \
 134                'Encountered unknown tag \'endif\'' in log
 135
 136     def _test_common(self):
 137         tmpl1 = self.reg_env.get_template('a/test.html')
 138         tmpl2 = self.mod_env.get_template('a/test.html')
 139         assert tmpl1.render() == tmpl2.render()
 140
 141         tmpl1 = self.reg_env.get_template('b/justdict.html')
 142         tmpl2 = self.mod_env.get_template('b/justdict.html')
 143         assert tmpl1.render() == tmpl2.render()
 144
 145     def test_deflated_zip_compile(self):
 146         self.compile_down(zip='deflated')
 147         self._test_common()
 148
 149     def test_stored_zip_compile(self):
 150         self.compile_down(zip='stored')
 151         self._test_common()
 152
 153     def test_filesystem_compile(self):
 154         self.compile_down(zip=None)
 155         self._test_common()
 156
 157     def test_weak_references(self):
 158         self.compile_down()
 159         tmpl = self.mod_env.get_template('a/test.html')
 160         key = loaders.ModuleLoader.get_template_key('a/test.html')
 161         name = self.mod_env.loader.module.__name__
 162
 163         assert hasattr(self.mod_env.loader.module, key)
 164         assert name in sys.modules
 165
 166         # unset all, ensure the module is gone from sys.modules
 167         self.mod_env = tmpl = None
 168
 169         try:
 170             import gc
 171             gc.collect()
 172         except:
 173             pass
 174
 175         assert name not in sys.modules
 176
 177     def test_byte_compilation(self):
 178         log = self.compile_down(py_compile=True)
 179         assert 'Byte-compiled "a/test.html"' in log
 180         tmpl1 = self.mod_env.get_template('a/test.html')
 181         mod = self.mod_env.loader.module. \
 182             tmpl_3c4ddf650c1a73df961a6d3d2ce2752f1b8fd490
 183         assert mod.__file__.endswith('.pyc')
 184
 185
 186 def suite():
 187     suite = unittest.TestSuite()
 188     suite.addTest(unittest.makeSuite(LoaderTestCase))
 189     suite.addTest(unittest.makeSuite(ModuleLoaderTestCase))
 190     return suite