philo/tests.py

   1 import sys
   2 import traceback
   3
   4 from django import template
   5 from django.conf import settings
   6 from django.db import connection, models
   7 from django.template import loader
   8 from django.template.loaders import cached
   9 from django.test import TestCase
  10 from django.test.utils import setup_test_template_loader, restore_template_loaders
  11
  12 from philo.exceptions import AncestorDoesNotExist
  13 from philo.models import Node, Page, Template, Tag
  14
  15
  16 class TemplateTestCase(TestCase):
  17         fixtures = ['test_fixtures.json']
  18
  19         def test_templates(self):
  20                 "Tests to make sure that embed behaves with complex includes and extends"
  21                 template_tests = self.get_template_tests()
  22
  23                 # Register our custom template loader. Shamelessly cribbed from django/tests/regressiontests/templates/tests.py:384.
  24                 cache_loader = setup_test_template_loader(
  25                         dict([(name, t[0]) for name, t in template_tests.iteritems()]),
  26                         use_cached_loader=True,
  27                 )
  28
  29                 failures = []
  30                 tests = template_tests.items()
  31                 tests.sort()
  32
  33                 # Turn TEMPLATE_DEBUG off, because tests assume that.
  34                 old_td, settings.TEMPLATE_DEBUG = settings.TEMPLATE_DEBUG, False
  35
  36                 # Set TEMPLATE_STRING_IF_INVALID to a known string.
  37                 old_invalid = settings.TEMPLATE_STRING_IF_INVALID
  38                 expected_invalid_str = 'INVALID'
  39
  40                 # Run tests
  41                 for name, vals in tests:
  42                         xx, context, result = vals
  43                         try:
  44                                 test_template = loader.get_template(name)
  45                                 output = test_template.render(template.Context(context))
  46                         except Exception:
  47                                 exc_type, exc_value, exc_tb = sys.exc_info()
  48                                 if exc_type != result:
  49                                         tb = '\n'.join(traceback.format_exception(exc_type, exc_value, exc_tb))
  50                                         failures.append("Template test %s -- FAILED. Got %s, exception: %s\n%s" % (name, exc_type, exc_value, tb))
  51                                 continue
  52                         if output != result:
  53                                 failures.append("Template test %s -- FAILED. Expected %r, got %r" % (name, result, output))
  54
  55                 # Cleanup
  56                 settings.TEMPLATE_DEBUG = old_td
  57                 settings.TEMPLATE_STRING_IF_INVALID = old_invalid
  58                 restore_template_loaders()
  59
  60                 self.assertEqual(failures, [], "Tests failed:\n%s\n%s" % ('-'*70, ("\n%s\n" % ('-'*70)).join(failures)))
  61
  62
  63         def get_template_tests(self):
  64                 # SYNTAX --
  65                 # 'template_name': ('template contents', 'context dict', 'expected string output' or Exception class)
  66                 embedded = Tag.objects.get(pk=1)
  67                 return {
  68                         # EMBED INCLUSION HANDLING
  69
  70                         'embed01': ('{{ embedded.name|safe }}', {'embedded': embedded}, embedded.name),
  71                         'embed02': ('{{ embedded.name|safe }}{{ var1 }}{{ var2 }}', {'embedded': embedded}, embedded.name),
  72                         'embed03': ('{{ embedded.name|safe }} is a lie!', {'embedded': embedded}, '%s is a lie!' % embedded.name),
  73
  74                         # Simple template structure with embed
  75                         'simple01': ('{% embed philo.tag with "embed01" %}{% embed philo.tag 1 %}Simple{% block one %}{% endblock %}', {'embedded': embedded}, '%sSimple' % embedded.name),
  76                         'simple02': ('{% extends "simple01" %}', {}, '%sSimple' % embedded.name),
  77                         'simple03': ('{% embed philo.tag with "embed000" %}', {}, settings.TEMPLATE_STRING_IF_INVALID),
  78                         'simple04': ('{% embed philo.tag 1 %}', {}, settings.TEMPLATE_STRING_IF_INVALID),
  79                         'simple05': ('{% embed philo.tag with "embed01" %}{% embed embedded %}', {'embedded': embedded}, embedded.name),
  80
  81                         # Kwargs
  82                         'kwargs01': ('{% embed philo.tag with "embed02" %}{% embed philo.tag 1 var1="hi" var2=lo %}', {'lo': 'lo'}, '%shilo' % embedded.name),
  83
  84                         # Filters/variables
  85                         'filters01': ('{% embed philo.tag with "embed02" %}{% embed philo.tag 1 var1=hi|first var2=lo|slice:"3" %}', {'hi': ["These", "words"], 'lo': 'lower'}, '%sTheselow' % embedded.name),
  86                         'filters02': ('{% embed philo.tag with "embed01" %}{% embed philo.tag entry %}', {'entry': 1}, embedded.name),
  87
  88                         # Blocky structure
  89                         'block01': ('{% block one %}Hello{% endblock %}', {}, 'Hello'),
  90                         'block02': ('{% extends "simple01" %}{% block one %}{% embed philo.tag 1 %}{% endblock %}', {}, "%sSimple%s" % (embedded.name, embedded.name)),
  91                         'block03': ('{% extends "simple01" %}{% embed philo.tag with "embed03" %}{% block one %}{% embed philo.tag 1 %}{% endblock %}', {}, "%sSimple%s is a lie!" % (embedded.name, embedded.name)),
  92
  93                         # Blocks and includes
  94                         'block-include01': ('{% extends "simple01" %}{% embed philo.tag with "embed03" %}{% block one %}{% include "simple01" %}{% embed philo.tag 1 %}{% endblock %}', {}, "%sSimple%sSimple%s is a lie!" % (embedded.name, embedded.name, embedded.name)),
  95                         'block-include02': ('{% extends "simple01" %}{% block one %}{% include "simple04" %}{% embed philo.tag with "embed03" %}{% include "simple04" %}{% embed philo.tag 1 %}{% endblock %}', {}, "%sSimple%s%s is a lie!%s is a lie!" % (embedded.name, embedded.name, embedded.name, embedded.name)),
  96
  97                         # Tests for more complex situations...
  98                         'complex01': ('{% block one %}{% endblock %}complex{% block two %}{% endblock %}', {}, 'complex'),
  99                         'complex02': ('{% extends "complex01" %}', {}, 'complex'),
 100                         'complex03': ('{% extends "complex02" %}{% embed philo.tag with "embed01" %}', {}, 'complex'),
 101                         'complex04': ('{% extends "complex03" %}{% block one %}{% embed philo.tag 1 %}{% endblock %}', {}, '%scomplex' % embedded.name),
 102                         'complex05': ('{% extends "complex03" %}{% block one %}{% include "simple04" %}{% endblock %}', {}, '%scomplex' % embedded.name),
 103                 }
 104
 105
 106 class NodeURLTestCase(TestCase):
 107         """Tests the features of the node_url template tag."""
 108         urls = 'philo.urls'
 109         fixtures = ['test_fixtures.json']
 110
 111         def setUp(self):
 112                 self.templates = [
 113                                 ("{% node_url %}", "/root/second"),
 114                                 ("{% node_url for node2 %}", "/root/second2"),
 115                                 ("{% node_url as hello %}<p>{{ hello|slice:'1:' }}</p>", "<p>root/second</p>"),
 116                                 ("{% node_url for nodes|first %}", "/root"),
 117                 ]
 118
 119                 nodes = Node.objects.all()
 120
 121                 self.context = template.Context({
 122                         'node': nodes.get(slug='second'),
 123                         'node2': nodes.get(slug='second2'),
 124                         'nodes': nodes,
 125                 })
 126
 127         def test_nodeurl(self):
 128                 for string, result in self.templates:
 129                         self.assertEqual(template.Template(string).render(self.context), result)
 130
 131 class TreePathTestCase(TestCase):
 132         urls = 'philo.urls'
 133         fixtures = ['test_fixtures.json']
 134
 135         def assertQueryLimit(self, max, expected_result, *args, **kwargs):
 136                 # As a rough measure of efficiency, limit the number of queries required for a given operation.
 137                 settings.DEBUG = True
 138                 call = kwargs.pop('callable', Node.objects.get_with_path)
 139                 try:
 140                         queries = len(connection.queries)
 141                         if isinstance(expected_result, type) and issubclass(expected_result, Exception):
 142                                 self.assertRaises(expected_result, call, *args, **kwargs)
 143                         else:
 144                                 self.assertEqual(call(*args, **kwargs), expected_result)
 145                         queries = len(connection.queries) - queries
 146                         if queries > max:
 147                                 raise AssertionError('"%d" unexpectedly not less than or equal to "%s"' % (queries, max))
 148                 finally:
 149                         settings.DEBUG = False
 150
 151         def test_get_with_path(self):
 152                 root = Node.objects.get(slug='root')
 153                 third = Node.objects.get(slug='third')
 154                 second2 = Node.objects.get(slug='second2')
 155                 fifth = Node.objects.get(slug='fifth')
 156                 e = Node.DoesNotExist
 157
 158                 # Empty segments
 159                 self.assertQueryLimit(0, root, '', root=root)
 160                 self.assertQueryLimit(0, e, '')
 161                 self.assertQueryLimit(0, (root, None), '', root=root, absolute_result=False)
 162
 163                 # Absolute result
 164                 self.assertQueryLimit(1, third, 'root/second/third')
 165                 self.assertQueryLimit(1, third, 'second/third', root=root)
 166                 self.assertQueryLimit(1, third, 'root//////second/third///')
 167
 168                 self.assertQueryLimit(1, e, 'root/secont/third')
 169                 self.assertQueryLimit(1, e, 'second/third')
 170
 171                 # Non-absolute result (binary search)
 172                 self.assertQueryLimit(2, (second2, 'sub/path/tail'), 'root/second2/sub/path/tail', absolute_result=False)
 173                 self.assertQueryLimit(3, (second2, 'sub'), 'root/second2/sub/', absolute_result=False)
 174                 self.assertQueryLimit(2, e, 'invalid/path/1/2/3/4/5/6/7/8/9/1/2/3/4/5/6/7/8/9/0', absolute_result=False)
 175                 self.assertQueryLimit(1, (root, None), 'root', absolute_result=False)
 176                 self.assertQueryLimit(2, (second2, None), 'root/second2', absolute_result=False)
 177                 self.assertQueryLimit(3, (third, None), 'root/second/third', absolute_result=False)
 178
 179                 # with root != None
 180                 self.assertQueryLimit(1, (second2, None), 'second2', root=root, absolute_result=False)
 181                 self.assertQueryLimit(2, (third, None), 'second/third', root=root, absolute_result=False)
 182
 183                 # Eliminate trailing slash
 184                 self.assertQueryLimit(2, (second2, 'sub/path/tail'), 'root/second2/sub/path/tail/', absolute_result=False)
 185
 186                 # Speed increase for leaf nodes - should this be tested?
 187                 self.assertQueryLimit(1, (fifth, 'sub/path/tail/len/five'), 'root/second/third/fourth/fifth/sub/path/tail/len/five', absolute_result=False)
 188
 189         def test_get_path(self):
 190                 root = Node.objects.get(slug='root')
 191                 root2 = Node.objects.get(slug='root')
 192                 third = Node.objects.get(slug='third')
 193                 second2 = Node.objects.get(slug='second2')
 194                 fifth = Node.objects.get(slug='fifth')
 195                 e = AncestorDoesNotExist
 196
 197                 self.assertQueryLimit(0, 'root', callable=root.get_path)
 198                 self.assertQueryLimit(0, '', root2, callable=root.get_path)
 199                 self.assertQueryLimit(1, 'root/second/third', callable=third.get_path)
 200                 self.assertQueryLimit(1, 'second/third', root, callable=third.get_path)
 201                 self.assertQueryLimit(1, e, third, callable=second2.get_path)
 202                 self.assertQueryLimit(1, '? - ?', root, ' - ', 'title', callable=third.get_path)