django/tests/regressiontests/templates/tests.py

# -*- coding: utf-8 -*-
from django.conf import settings

if __name__ == '__main__':
    # When running this file in isolation, we need to set up the configuration
    # before importing 'template'.
    settings.configure()

import os
import unittest
from datetime import datetime, timedelta

from django import template
from django.core import urlresolvers
from django.template import loader
from django.template.loaders import app_directories, filesystem
from django.utils.translation import activate, deactivate, ugettext as _
from django.utils.safestring import mark_safe
from django.utils.tzinfo import LocalTimezone

from unicode import unicode_tests
from context import context_tests

try:
    from loaders import *
except ImportError:
    pass # If setuptools isn't installed, that's fine. Just move on.

import filters

# Some other tests we would like to run
__test__ = {
    'unicode': unicode_tests,
    'context': context_tests
}

#################################
# Custom template tag for tests #
#################################

register = template.Library()

class EchoNode(template.Node):
    def __init__(self, contents):
        self.contents = contents

    def render(self, context):
        return " ".join(self.contents)

def do_echo(parser, token):
    return EchoNode(token.contents.split()[1:])

register.tag("echo", do_echo)

template.libraries['django.templatetags.testtags'] = register

#####################################
# Helper objects for template tests #
#####################################

class SomeException(Exception):
    silent_variable_failure = True

class SomeOtherException(Exception):
    pass

class SomeClass:
    def __init__(self):
        self.otherclass = OtherClass()

    def method(self):
        return "SomeClass.method"

    def method2(self, o):
        return o

    def method3(self):
        raise SomeException

    def method4(self):
        raise SomeOtherException

class OtherClass:
    def method(self):
        return "OtherClass.method"

class UTF8Class:
    "Class whose __str__ returns non-ASCII data"
    def __str__(self):
        return u'ŠĐĆŽćžšđ'.encode('utf-8')

class Templates(unittest.TestCase):
    def test_loaders_security(self):
        def test_template_sources(path, template_dirs, expected_sources):
            if isinstance(expected_sources, list):
                # Fix expected sources so they are normcased and abspathed
                expected_sources = [os.path.normcase(os.path.abspath(s)) for s in expected_sources]
            # Test the two loaders (app_directores and filesystem).
            func1 = lambda p, t: list(app_directories.get_template_sources(p, t))
            func2 = lambda p, t: list(filesystem.get_template_sources(p, t))
            for func in (func1, func2):
                if isinstance(expected_sources, list):
                    self.assertEqual(func(path, template_dirs), expected_sources)
                else:
                    self.assertRaises(expected_sources, func, path, template_dirs)

        template_dirs = ['/dir1', '/dir2']
        test_template_sources('index.html', template_dirs,
                              ['/dir1/index.html', '/dir2/index.html'])
        test_template_sources('/etc/passwd', template_dirs, [])
        test_template_sources('etc/passwd', template_dirs,
                              ['/dir1/etc/passwd', '/dir2/etc/passwd'])
        test_template_sources('../etc/passwd', template_dirs, [])
        test_template_sources('../../../etc/passwd', template_dirs, [])
        test_template_sources('/dir1/index.html', template_dirs,
                              ['/dir1/index.html'])
        test_template_sources('../dir2/index.html', template_dirs,
                              ['/dir2/index.html'])
        test_template_sources('/dir1blah', template_dirs, [])
        test_template_sources('../dir1blah', template_dirs, [])

        # UTF-8 bytestrings are permitted.
        test_template_sources('\xc3\x85ngstr\xc3\xb6m', template_dirs,
                              [u'/dir1/Ångström', u'/dir2/Ångström'])
        # Unicode strings are permitted.
        test_template_sources(u'Ångström', template_dirs,
                              [u'/dir1/Ångström', u'/dir2/Ångström'])
        test_template_sources(u'Ångström', ['/Straße'], [u'/Straße/Ångström'])
        test_template_sources('\xc3\x85ngstr\xc3\xb6m', ['/Straße'],
                              [u'/Straße/Ångström'])
        # Invalid UTF-8 encoding in bytestrings is not. Should raise a
        # semi-useful error message.
        test_template_sources('\xc3\xc3', template_dirs, UnicodeDecodeError)

        # Case insensitive tests (for win32). Not run unless we're on
        # a case insensitive operating system.
        if os.path.normcase('/TEST') == os.path.normpath('/test'):
            template_dirs = ['/dir1', '/DIR2']
            test_template_sources('index.html', template_dirs,
                                  ['/dir1/index.html', '/dir2/index.html'])
            test_template_sources('/DIR1/index.HTML', template_dirs,
                                  ['/dir1/index.html'])

    def test_token_smart_split(self):
        # Regression test for #7027
        token = template.Token(template.TOKEN_BLOCK, 'sometag _("Page not found") value|yesno:_("yes,no")')
        split = token.split_contents()
        self.assertEqual(split, ["sometag", '_("Page not found")', 'value|yesno:_("yes,no")'])

    def test_templates(self):
        template_tests = self.get_template_tests()
        filter_tests = filters.get_filter_tests()

        # Quickly check that we aren't accidentally using a name in both
        # template and filter tests.
        overlapping_names = [name for name in filter_tests if name in template_tests]
        assert not overlapping_names, 'Duplicate test name(s): %s' % ', '.join(overlapping_names)

        template_tests.update(filter_tests)

        # Register our custom template loader.
        def test_template_loader(template_name, template_dirs=None):
            "A custom template loader that loads the unit-test templates."
            try:
                return (template_tests[template_name][0] , "test:%s" % template_name)
            except KeyError:
                raise template.TemplateDoesNotExist, template_name

        old_template_loaders = loader.template_source_loaders
        loader.template_source_loaders = [test_template_loader]

        failures = []
        tests = template_tests.items()
        tests.sort()

        # Turn TEMPLATE_DEBUG off, because tests assume that.
        old_td, settings.TEMPLATE_DEBUG = settings.TEMPLATE_DEBUG, False

        # Set TEMPLATE_STRING_IF_INVALID to a known string.
        old_invalid = settings.TEMPLATE_STRING_IF_INVALID
        expected_invalid_str = 'INVALID'

        for name, vals in tests:
            if isinstance(vals[2], tuple):
                normal_string_result = vals[2][0]
                invalid_string_result = vals[2][1]
                if '%s' in invalid_string_result:
                    expected_invalid_str = 'INVALID %s'
                    invalid_string_result = invalid_string_result % vals[2][2]
                    template.invalid_var_format_string = True
            else:
                normal_string_result = vals[2]
                invalid_string_result = vals[2]

            if 'LANGUAGE_CODE' in vals[1]:
                activate(vals[1]['LANGUAGE_CODE'])
            else:
                activate('en-us')

            for invalid_str, result in [('', normal_string_result),
                                        (expected_invalid_str, invalid_string_result)]:
                settings.TEMPLATE_STRING_IF_INVALID = invalid_str
                try:
                    test_template = loader.get_template(name)
                    output = self.render(test_template, vals)
                except Exception, e:
                    if e.__class__ != result:
                        raise
                        failures.append("Template test (TEMPLATE_STRING_IF_INVALID='%s'): %s -- FAILED. Got %s, exception: %s" % (invalid_str, name, e.__class__, e))
                    continue
                if output != result:
                    failures.append("Template test (TEMPLATE_STRING_IF_INVALID='%s'): %s -- FAILED. Expected %r, got %r" % (invalid_str, name, result, output))

            if 'LANGUAGE_CODE' in vals[1]:
                deactivate()

            if template.invalid_var_format_string:
                expected_invalid_str = 'INVALID'
                template.invalid_var_format_string = False

        loader.template_source_loaders = old_template_loaders
        deactivate()
        settings.TEMPLATE_DEBUG = old_td
        settings.TEMPLATE_STRING_IF_INVALID = old_invalid

        self.assertEqual(failures, [], '\n'.join(failures))

    def render(self, test_template, vals):
        return test_template.render(template.Context(vals[1]))

    def get_template_tests(self):
        # SYNTAX --
        # 'template_name': ('template contents', 'context dict', 'expected string output' or Exception class)
        return {
            ### BASIC SYNTAX ################################################

            # Plain text should go through the template parser untouched
            'basic-syntax01': ("something cool", {}, "something cool"),

            # Variables should be replaced with their value in the current
            # context
            'basic-syntax02': ("{{ headline }}", {'headline':'Success'}, "Success"),

            # More than one replacement variable is allowed in a template
            'basic-syntax03': ("{{ first }} --- {{ second }}", {"first" : 1, "second" : 2}, "1 --- 2"),

            # Fail silently when a variable is not found in the current context
            'basic-syntax04': ("as{{ missing }}df", {}, ("asdf","asINVALIDdf")),

            # A variable may not contain more than one word
            'basic-syntax06': ("{{ multi word variable }}", {}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError for empty variable tags
            'basic-syntax07': ("{{ }}",        {}, template.TemplateSyntaxError),
            'basic-syntax08': ("{{        }}", {}, template.TemplateSyntaxError),

            # Attribute syntax allows a template to call an object's attribute
            'basic-syntax09': ("{{ var.method }}", {"var": SomeClass()}, "SomeClass.method"),

            # Multiple levels of attribute access are allowed
            'basic-syntax10': ("{{ var.otherclass.method }}", {"var": SomeClass()}, "OtherClass.method"),

            # Fail silently when a variable's attribute isn't found
            'basic-syntax11': ("{{ var.blech }}", {"var": SomeClass()}, ("","INVALID")),

            # Raise TemplateSyntaxError when trying to access a variable beginning with an underscore
            'basic-syntax12': ("{{ var.__dict__ }}", {"var": SomeClass()}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError when trying to access a variable containing an illegal character
            'basic-syntax13': ("{{ va>r }}", {}, template.TemplateSyntaxError),
            'basic-syntax14': ("{{ (var.r) }}", {}, template.TemplateSyntaxError),
            'basic-syntax15': ("{{ sp%am }}", {}, template.TemplateSyntaxError),
            'basic-syntax16': ("{{ eggs! }}", {}, template.TemplateSyntaxError),
            'basic-syntax17': ("{{ moo? }}", {}, template.TemplateSyntaxError),

            # Attribute syntax allows a template to call a dictionary key's value
            'basic-syntax18': ("{{ foo.bar }}", {"foo" : {"bar" : "baz"}}, "baz"),

            # Fail silently when a variable's dictionary key isn't found
            'basic-syntax19': ("{{ foo.spam }}", {"foo" : {"bar" : "baz"}}, ("","INVALID")),

            # Fail silently when accessing a non-simple method
            'basic-syntax20': ("{{ var.method2 }}", {"var": SomeClass()}, ("","INVALID")),

            # Don't get confused when parsing something that is almost, but not
            # quite, a template tag.
            'basic-syntax21': ("a {{ moo %} b", {}, "a {{ moo %} b"),
            'basic-syntax22': ("{{ moo #}", {}, "{{ moo #}"),

            # Will try to treat "moo #} {{ cow" as the variable. Not ideal, but
            # costly to work around, so this triggers an error.
            'basic-syntax23': ("{{ moo #} {{ cow }}", {"cow": "cow"}, template.TemplateSyntaxError),

            # Embedded newlines make it not-a-tag.
            'basic-syntax24': ("{{ moo\n }}", {}, "{{ moo\n }}"),

            # Literal strings are permitted inside variables, mostly for i18n
            # purposes.
            'basic-syntax25': ('{{ "fred" }}', {}, "fred"),
            'basic-syntax26': (r'{{ "\"fred\"" }}', {}, "\"fred\""),
            'basic-syntax27': (r'{{ _("\"fred\"") }}', {}, "\"fred\""),

            # List-index syntax allows a template to access a certain item of a subscriptable object.
            'list-index01': ("{{ var.1 }}", {"var": ["first item", "second item"]}, "second item"),

            # Fail silently when the list index is out of range.
            'list-index02': ("{{ var.5 }}", {"var": ["first item", "second item"]}, ("", "INVALID")),

            # Fail silently when the variable is not a subscriptable object.
            'list-index03': ("{{ var.1 }}", {"var": None}, ("", "INVALID")),

            # Fail silently when variable is a dict without the specified key.
            'list-index04': ("{{ var.1 }}", {"var": {}}, ("", "INVALID")),

            # Dictionary lookup wins out when dict's key is a string.
            'list-index05': ("{{ var.1 }}", {"var": {'1': "hello"}}, "hello"),

            # But list-index lookup wins out when dict's key is an int, which
            # behind the scenes is really a dictionary lookup (for a dict)
            # after converting the key to an int.
            'list-index06': ("{{ var.1 }}", {"var": {1: "hello"}}, "hello"),

            # Dictionary lookup wins out when there is a string and int version of the key.
            'list-index07': ("{{ var.1 }}", {"var": {'1': "hello", 1: "world"}}, "hello"),

            # Basic filter usage
            'filter-syntax01': ("{{ var|upper }}", {"var": "Django is the greatest!"}, "DJANGO IS THE GREATEST!"),

            # Chained filters
            'filter-syntax02': ("{{ var|upper|lower }}", {"var": "Django is the greatest!"}, "django is the greatest!"),

            # Raise TemplateSyntaxError for space between a variable and filter pipe
            'filter-syntax03': ("{{ var |upper }}", {}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError for space after a filter pipe
            'filter-syntax04': ("{{ var| upper }}", {}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError for a nonexistent filter
            'filter-syntax05': ("{{ var|does_not_exist }}", {}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError when trying to access a filter containing an illegal character
            'filter-syntax06': ("{{ var|fil(ter) }}", {}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError for invalid block tags
            'filter-syntax07': ("{% nothing_to_see_here %}", {}, template.TemplateSyntaxError),

            # Raise TemplateSyntaxError for empty block tags
            'filter-syntax08': ("{% %}", {}, template.TemplateSyntaxError),

            # Chained filters, with an argument to the first one
            'filter-syntax09': ('{{ var|removetags:"b i"|upper|lower }}', {"var": "<b><i>Yes</i></b>"}, "yes"),

            # Literal string as argument is always "safe" from auto-escaping..
            'filter-syntax10': (r'{{ var|default_if_none:" endquote\" hah" }}',
                    {"var": None}, ' endquote" hah'),

            # Variable as argument
            'filter-syntax11': (r'{{ var|default_if_none:var2 }}', {"var": None, "var2": "happy"}, 'happy'),

            # Default argument testing
            'filter-syntax12': (r'{{ var|yesno:"yup,nup,mup" }} {{ var|yesno }}', {"var": True}, 'yup yes'),

            # Fail silently for methods that raise an exception with a
            # "silent_variable_failure" attribute
            'filter-syntax13': (r'1{{ var.method3 }}2', {"var": SomeClass()}, ("12", "1INVALID2")),

            # In methods that raise an exception without a
            # "silent_variable_attribute" set to True, the exception propagates
            'filter-syntax14': (r'1{{ var.method4 }}2', {"var": SomeClass()}, SomeOtherException),

            # Escaped backslash in argument
            'filter-syntax15': (r'{{ var|default_if_none:"foo\bar" }}', {"var": None}, r'foo\bar'),

            # Escaped backslash using known escape char
            'filter-syntax16': (r'{{ var|default_if_none:"foo\now" }}', {"var": None}, r'foo\now'),

            # Empty strings can be passed as arguments to filters
            'filter-syntax17': (r'{{ var|join:"" }}', {'var': ['a', 'b', 'c']}, 'abc'),

            # Make sure that any unicode strings are converted to bytestrings
            # in the final output.
            'filter-syntax18': (r'{{ var }}', {'var': UTF8Class()}, u'\u0160\u0110\u0106\u017d\u0107\u017e\u0161\u0111'),

            # Numbers as filter arguments should work
            'filter-syntax19': ('{{ var|truncatewords:1 }}', {"var": "hello world"}, "hello ..."),

            #filters should accept empty string constants
            'filter-syntax20': ('{{ ""|default_if_none:"was none" }}', {}, ""),

            ### COMMENT SYNTAX ########################################################
            'comment-syntax01': ("{# this is hidden #}hello", {}, "hello"),
            'comment-syntax02': ("{# this is hidden #}hello{# foo #}", {}, "hello"),

            # Comments can contain invalid stuff.
            'comment-syntax03': ("foo{#  {% if %}  #}", {}, "foo"),
            'comment-syntax04': ("foo{#  {% endblock %}  #}", {}, "foo"),
            'comment-syntax05': ("foo{#  {% somerandomtag %}  #}", {}, "foo"),
            'comment-syntax06': ("foo{# {% #}", {}, "foo"),
            'comment-syntax07': ("foo{# %} #}", {}, "foo"),
            'comment-syntax08': ("foo{# %} #}bar", {}, "foobar"),
            'comment-syntax09': ("foo{# {{ #}", {}, "foo"),
            'comment-syntax10': ("foo{# }} #}", {}, "foo"),
            'comment-syntax11': ("foo{# { #}", {}, "foo"),
            'comment-syntax12': ("foo{# } #}", {}, "foo"),

            ### COMMENT TAG ###########################################################
            'comment-tag01': ("{% comment %}this is hidden{% endcomment %}hello", {}, "hello"),
            'comment-tag02': ("{% comment %}this is hidden{% endcomment %}hello{% comment %}foo{% endcomment %}", {}, "hello"),

            # Comment tag can contain invalid stuff.
            'comment-tag03': ("foo{% comment %} {% if %} {% endcomment %}", {}, "foo"),
            'comment-tag04': ("foo{% comment %} {% endblock %} {% endcomment %}", {}, "foo"),
            'comment-tag05': ("foo{% comment %} {% somerandomtag %} {% endcomment %}", {}, "foo"),

            ### CYCLE TAG #############################################################
            'cycle01': ('{% cycle a %}', {}, template.TemplateSyntaxError),
            'cycle02': ('{% cycle a,b,c as abc %}{% cycle abc %}', {}, 'ab'),
            'cycle03': ('{% cycle a,b,c as abc %}{% cycle abc %}{% cycle abc %}', {}, 'abc'),
            'cycle04': ('{% cycle a,b,c as abc %}{% cycle abc %}{% cycle abc %}{% cycle abc %}', {}, 'abca'),
            'cycle05': ('{% cycle %}', {}, template.TemplateSyntaxError),
            'cycle06': ('{% cycle a %}', {}, template.TemplateSyntaxError),
            'cycle07': ('{% cycle a,b,c as foo %}{% cycle bar %}', {}, template.TemplateSyntaxError),
            'cycle08': ('{% cycle a,b,c as foo %}{% cycle foo %}{{ foo }}{{ foo }}{% cycle foo %}{{ foo }}', {}, 'abbbcc'),
            'cycle09': ("{% for i in test %}{% cycle a,b %}{{ i }},{% endfor %}", {'test': range(5)}, 'a0,b1,a2,b3,a4,'),
            # New format:
            'cycle10': ("{% cycle 'a' 'b' 'c' as abc %}{% cycle abc %}", {}, 'ab'),
            'cycle11': ("{% cycle 'a' 'b' 'c' as abc %}{% cycle abc %}{% cycle abc %}", {}, 'abc'),
            'cycle12': ("{% cycle 'a' 'b' 'c' as abc %}{% cycle abc %}{% cycle abc %}{% cycle abc %}", {}, 'abca'),
            'cycle13': ("{% for i in test %}{% cycle 'a' 'b' %}{{ i }},{% endfor %}", {'test': range(5)}, 'a0,b1,a2,b3,a4,'),
            'cycle14': ("{% cycle one two as foo %}{% cycle foo %}", {'one': '1','two': '2'}, '12'),
            'cycle13': ("{% for i in test %}{% cycle aye bee %}{{ i }},{% endfor %}", {'test': range(5), 'aye': 'a', 'bee': 'b'}, 'a0,b1,a2,b3,a4,'),

            ### EXCEPTIONS ############################################################

            # Raise exception for invalid template name
            'exception01': ("{% extends 'nonexistent' %}", {}, template.TemplateSyntaxError),

            # Raise exception for invalid template name (in variable)
            'exception02': ("{% extends nonexistent %}", {}, template.TemplateSyntaxError),

            # Raise exception for extra {% extends %} tags
            'exception03': ("{% extends 'inheritance01' %}{% block first %}2{% endblock %}{% extends 'inheritance16' %}", {}, template.TemplateSyntaxError),

            # Raise exception for custom tags used in child with {% load %} tag in parent, not in child
            'exception04': ("{% extends 'inheritance17' %}{% block first %}{% echo 400 %}5678{% endblock %}", {}, template.TemplateSyntaxError),

            ### FILTER TAG ############################################################
            'filter01': ('{% filter upper %}{% endfilter %}', {}, ''),
            'filter02': ('{% filter upper %}django{% endfilter %}', {}, 'DJANGO'),
            'filter03': ('{% filter upper|lower %}django{% endfilter %}', {}, 'django'),
            'filter04': ('{% filter cut:remove %}djangospam{% endfilter %}', {'remove': 'spam'}, 'django'),

            ### FIRSTOF TAG ###########################################################
            'firstof01': ('{% firstof a b c %}', {'a':0,'b':0,'c':0}, ''),
            'firstof02': ('{% firstof a b c %}', {'a':1,'b':0,'c':0}, '1'),
            'firstof03': ('{% firstof a b c %}', {'a':0,'b':2,'c':0}, '2'),
            'firstof04': ('{% firstof a b c %}', {'a':0,'b':0,'c':3}, '3'),
            'firstof05': ('{% firstof a b c %}', {'a':1,'b':2,'c':3}, '1'),
            'firstof06': ('{% firstof a b c %}', {'b':0,'c':3}, '3'),
            'firstof07': ('{% firstof a b "c" %}', {'a':0}, 'c'),
            'firstof08': ('{% firstof a b "c and d" %}', {'a':0,'b':0}, 'c and d'),
            'firstof09': ('{% firstof %}', {}, template.TemplateSyntaxError),

            ### FOR TAG ###############################################################
            'for-tag01': ("{% for val in values %}{{ val }}{% endfor %}", {"values": [1, 2, 3]}, "123"),
            'for-tag02': ("{% for val in values reversed %}{{ val }}{% endfor %}", {"values": [1, 2, 3]}, "321"),
            'for-tag-vars01': ("{% for val in values %}{{ forloop.counter }}{% endfor %}", {"values": [6, 6, 6]}, "123"),
            'for-tag-vars02': ("{% for val in values %}{{ forloop.counter0 }}{% endfor %}", {"values": [6, 6, 6]}, "012"),
            'for-tag-vars03': ("{% for val in values %}{{ forloop.revcounter }}{% endfor %}", {"values": [6, 6, 6]}, "321"),
            'for-tag-vars04': ("{% for val in values %}{{ forloop.revcounter0 }}{% endfor %}", {"values": [6, 6, 6]}, "210"),
            'for-tag-vars05': ("{% for val in values %}{% if forloop.first %}f{% else %}x{% endif %}{% endfor %}", {"values": [6, 6, 6]}, "fxx"),
            'for-tag-vars06': ("{% for val in values %}{% if forloop.last %}l{% else %}x{% endif %}{% endfor %}", {"values": [6, 6, 6]}, "xxl"),
            'for-tag-unpack01': ("{% for key,value in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, "one:1/two:2/"),
            'for-tag-unpack03': ("{% for key, value in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, "one:1/two:2/"),
            'for-tag-unpack04': ("{% for key , value in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, "one:1/two:2/"),
            'for-tag-unpack05': ("{% for key ,value in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, "one:1/two:2/"),
            'for-tag-unpack06': ("{% for key value in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, template.TemplateSyntaxError),
            'for-tag-unpack07': ("{% for key,,value in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, template.TemplateSyntaxError),
            'for-tag-unpack08': ("{% for key,value, in items %}{{ key }}:{{ value }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, template.TemplateSyntaxError),
            # Ensure that a single loopvar doesn't truncate the list in val.
            'for-tag-unpack09': ("{% for val in items %}{{ val.0 }}:{{ val.1 }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, "one:1/two:2/"),
            # Otherwise, silently truncate if the length of loopvars differs to the length of each set of items.
            'for-tag-unpack10': ("{% for x,y in items %}{{ x }}:{{ y }}/{% endfor %}", {"items": (('one', 1, 'carrot'), ('two', 2, 'orange'))}, "one:1/two:2/"),
            'for-tag-unpack11': ("{% for x,y,z in items %}{{ x }}:{{ y }},{{ z }}/{% endfor %}", {"items": (('one', 1), ('two', 2))}, ("one:1,/two:2,/", "one:1,INVALID/two:2,INVALID/")),
            'for-tag-unpack12': ("{% for x,y,z in items %}{{ x }}:{{ y }},{{ z }}/{% endfor %}", {"items": (('one', 1, 'carrot'), ('two', 2))}, ("one:1,carrot/two:2,/", "one:1,carrot/two:2,INVALID/")),
            'for-tag-unpack13': ("{% for x,y,z in items %}{{ x }}:{{ y }},{{ z }}/{% endfor %}", {"items": (('one', 1, 'carrot'), ('two', 2, 'cheese'))}, ("one:1,carrot/two:2,cheese/", "one:1,carrot/two:2,cheese/")),
            'for-tag-empty01': ("{% for val in values %}{{ val }}{% empty %}empty text{% endfor %}", {"values": [1, 2, 3]}, "123"),
            'for-tag-empty02': ("{% for val in values %}{{ val }}{% empty %}values array empty{% endfor %}", {"values": []}, "values array empty"),
            'for-tag-empty03': ("{% for val in values %}{{ val }}{% empty %}values array not found{% endfor %}", {}, "values array not found"),

            ### IF TAG ################################################################
            'if-tag01': ("{% if foo %}yes{% else %}no{% endif %}", {"foo": True}, "yes"),
            'if-tag02': ("{% if foo %}yes{% else %}no{% endif %}", {"foo": False}, "no"),
            'if-tag03': ("{% if foo %}yes{% else %}no{% endif %}", {}, "no"),

            # AND
            'if-tag-and01': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'yes'),
            'if-tag-and02': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'no'),
            'if-tag-and03': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'no'),
            'if-tag-and04': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'no'),
            'if-tag-and05': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'foo': False}, 'no'),
            'if-tag-and06': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'bar': False}, 'no'),
            'if-tag-and07': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'foo': True}, 'no'),
            'if-tag-and08': ("{% if foo and bar %}yes{% else %}no{% endif %}", {'bar': True}, 'no'),

            # OR
            'if-tag-or01': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'yes'),
            'if-tag-or02': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'yes'),
            'if-tag-or03': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'yes'),
            'if-tag-or04': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'no'),
            'if-tag-or05': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'foo': False}, 'no'),
            'if-tag-or06': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'bar': False}, 'no'),
            'if-tag-or07': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'foo': True}, 'yes'),
            'if-tag-or08': ("{% if foo or bar %}yes{% else %}no{% endif %}", {'bar': True}, 'yes'),

            # TODO: multiple ORs

            # NOT
            'if-tag-not01': ("{% if not foo %}no{% else %}yes{% endif %}", {'foo': True}, 'yes'),
            'if-tag-not02': ("{% if not %}yes{% else %}no{% endif %}", {'foo': True}, 'no'),
            'if-tag-not03': ("{% if not %}yes{% else %}no{% endif %}", {'not': True}, 'yes'),
            'if-tag-not04': ("{% if not not %}no{% else %}yes{% endif %}", {'not': True}, 'yes'),
            'if-tag-not05': ("{% if not not %}no{% else %}yes{% endif %}", {}, 'no'),

            'if-tag-not06': ("{% if foo and not bar %}yes{% else %}no{% endif %}", {}, 'no'),
            'if-tag-not07': ("{% if foo and not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'no'),
            'if-tag-not08': ("{% if foo and not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'yes'),
            'if-tag-not09': ("{% if foo and not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'no'),
            'if-tag-not10': ("{% if foo and not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'no'),

            'if-tag-not11': ("{% if not foo and bar %}yes{% else %}no{% endif %}", {}, 'no'),
            'if-tag-not12': ("{% if not foo and bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'no'),
            'if-tag-not13': ("{% if not foo and bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'no'),
            'if-tag-not14': ("{% if not foo and bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'yes'),
            'if-tag-not15': ("{% if not foo and bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'no'),

            'if-tag-not16': ("{% if foo or not bar %}yes{% else %}no{% endif %}", {}, 'yes'),
            'if-tag-not17': ("{% if foo or not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'yes'),
            'if-tag-not18': ("{% if foo or not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'yes'),
            'if-tag-not19': ("{% if foo or not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'no'),
            'if-tag-not20': ("{% if foo or not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'yes'),

            'if-tag-not21': ("{% if not foo or bar %}yes{% else %}no{% endif %}", {}, 'yes'),
            'if-tag-not22': ("{% if not foo or bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'yes'),
            'if-tag-not23': ("{% if not foo or bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'no'),
            'if-tag-not24': ("{% if not foo or bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'yes'),
            'if-tag-not25': ("{% if not foo or bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'yes'),

            'if-tag-not26': ("{% if not foo and not bar %}yes{% else %}no{% endif %}", {}, 'yes'),
            'if-tag-not27': ("{% if not foo and not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'no'),
            'if-tag-not28': ("{% if not foo and not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'no'),
            'if-tag-not29': ("{% if not foo and not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'no'),
            'if-tag-not30': ("{% if not foo and not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'yes'),

            'if-tag-not31': ("{% if not foo or not bar %}yes{% else %}no{% endif %}", {}, 'yes'),
            'if-tag-not32': ("{% if not foo or not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': True}, 'no'),
            'if-tag-not33': ("{% if not foo or not bar %}yes{% else %}no{% endif %}", {'foo': True, 'bar': False}, 'yes'),
            'if-tag-not34': ("{% if not foo or not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': True}, 'yes'),
            'if-tag-not35': ("{% if not foo or not bar %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, 'yes'),

            # AND and OR raises a TemplateSyntaxError
            'if-tag-error01': ("{% if foo or bar and baz %}yes{% else %}no{% endif %}", {'foo': False, 'bar': False}, template.TemplateSyntaxError),
            'if-tag-error02': ("{% if foo and %}yes{% else %}no{% endif %}", {'foo': True}, template.TemplateSyntaxError),
            'if-tag-error03': ("{% if foo or %}yes{% else %}no{% endif %}", {'foo': True}, template.TemplateSyntaxError),
            'if-tag-error04': ("{% if not foo and %}yes{% else %}no{% endif %}", {'foo': True}, template.TemplateSyntaxError),
            'if-tag-error05': ("{% if not foo or %}yes{% else %}no{% endif %}", {'foo': True}, template.TemplateSyntaxError),

            ### IFCHANGED TAG #########################################################
            'ifchanged01': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% endfor %}', {'num': (1,2,3)}, '123'),
            'ifchanged02': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% endfor %}', {'num': (1,1,3)}, '13'),
            'ifchanged03': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% endfor %}', {'num': (1,1,1)}, '1'),
            'ifchanged04': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% for x in numx %}{% ifchanged %}{{ x }}{% endifchanged %}{% endfor %}{% endfor %}', {'num': (1, 2, 3), 'numx': (2, 2, 2)}, '122232'),
            'ifchanged05': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% for x in numx %}{% ifchanged %}{{ x }}{% endifchanged %}{% endfor %}{% endfor %}', {'num': (1, 1, 1), 'numx': (1, 2, 3)}, '1123123123'),
            'ifchanged06': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% for x in numx %}{% ifchanged %}{{ x }}{% endifchanged %}{% endfor %}{% endfor %}', {'num': (1, 1, 1), 'numx': (2, 2, 2)}, '1222'),
            'ifchanged07': ('{% for n in num %}{% ifchanged %}{{ n }}{% endifchanged %}{% for x in numx %}{% ifchanged %}{{ x }}{% endifchanged %}{% for y in numy %}{% ifchanged %}{{ y }}{% endifchanged %}{% endfor %}{% endfor %}{% endfor %}', {'num': (1, 1, 1), 'numx': (2, 2, 2), 'numy': (3, 3, 3)}, '1233323332333'),
            'ifchanged08': ('{% for data in datalist %}{% for c,d in data %}{% if c %}{% ifchanged %}{{ d }}{% endifchanged %}{% endif %}{% endfor %}{% endfor %}', {'datalist': [[(1, 'a'), (1, 'a'), (0, 'b'), (1, 'c')], [(0, 'a'), (1, 'c'), (1, 'd'), (1, 'd'), (0, 'e')]]}, 'accd'),

            # Test one parameter given to ifchanged.
            'ifchanged-param01': ('{% for n in num %}{% ifchanged n %}..{% endifchanged %}{{ n }}{% endfor %}', { 'num': (1,2,3) }, '..1..2..3'),
            'ifchanged-param02': ('{% for n in num %}{% for x in numx %}{% ifchanged n %}..{% endifchanged %}{{ x }}{% endfor %}{% endfor %}', { 'num': (1,2,3), 'numx': (5,6,7) }, '..567..567..567'),

            # Test multiple parameters to ifchanged.
            'ifchanged-param03': ('{% for n in num %}{{ n }}{% for x in numx %}{% ifchanged x n %}{{ x }}{% endifchanged %}{% endfor %}{% endfor %}', { 'num': (1,1,2), 'numx': (5,6,6) }, '156156256'),

            # Test a date+hour like construct, where the hour of the last day
            # is the same but the date had changed, so print the hour anyway.
            'ifchanged-param04': ('{% for d in days %}{% ifchanged %}{{ d.day }}{% endifchanged %}{% for h in d.hours %}{% ifchanged d h %}{{ h }}{% endifchanged %}{% endfor %}{% endfor %}', {'days':[{'day':1, 'hours':[1,2,3]},{'day':2, 'hours':[3]},] }, '112323'),

            # Logically the same as above, just written with explicit
            # ifchanged for the day.
            'ifchanged-param04': ('{% for d in days %}{% ifchanged d.day %}{{ d.day }}{% endifchanged %}{% for h in d.hours %}{% ifchanged d.day h %}{{ h }}{% endifchanged %}{% endfor %}{% endfor %}', {'days':[{'day':1, 'hours':[1,2,3]},{'day':2, 'hours':[3]},] }, '112323'),

            # Test the else clause of ifchanged.
            'ifchanged-else01': ('{% for id in ids %}{{ id }}{% ifchanged id %}-first{% else %}-other{% endifchanged %},{% endfor %}', {'ids': [1,1,2,2,2,3]}, '1-first,1-other,2-first,2-other,2-other,3-first,'),

            'ifchanged-else02': ('{% for id in ids %}{{ id }}-{% ifchanged id %}{% cycle red,blue %}{% else %}grey{% endifchanged %},{% endfor %}', {'ids': [1,1,2,2,2,3]}, '1-red,1-grey,2-blue,2-grey,2-grey,3-red,'),
            'ifchanged-else03': ('{% for id in ids %}{{ id }}{% ifchanged id %}-{% cycle red,blue %}{% else %}{% endifchanged %},{% endfor %}', {'ids': [1,1,2,2,2,3]}, '1-red,1,2-blue,2,2,3-red,'),

            'ifchanged-else04': ('{% for id in ids %}{% ifchanged %}***{{ id }}*{% else %}...{% endifchanged %}{{ forloop.counter }}{% endfor %}', {'ids': [1,1,2,2,2,3,4]}, '***1*1...2***2*3...4...5***3*6***4*7'),

            ### IFEQUAL TAG ###########################################################
            'ifequal01': ("{% ifequal a b %}yes{% endifequal %}", {"a": 1, "b": 2}, ""),
            'ifequal02': ("{% ifequal a b %}yes{% endifequal %}", {"a": 1, "b": 1}, "yes"),
            'ifequal03': ("{% ifequal a b %}yes{% else %}no{% endifequal %}", {"a": 1, "b": 2}, "no"),
            'ifequal04': ("{% ifequal a b %}yes{% else %}no{% endifequal %}", {"a": 1, "b": 1}, "yes"),
            'ifequal05': ("{% ifequal a 'test' %}yes{% else %}no{% endifequal %}", {"a": "test"}, "yes"),
            'ifequal06': ("{% ifequal a 'test' %}yes{% else %}no{% endifequal %}", {"a": "no"}, "no"),
            'ifequal07': ('{% ifequal a "test" %}yes{% else %}no{% endifequal %}', {"a": "test"}, "yes"),
            'ifequal08': ('{% ifequal a "test" %}yes{% else %}no{% endifequal %}', {"a": "no"}, "no"),
            'ifequal09': ('{% ifequal a "test" %}yes{% else %}no{% endifequal %}', {}, "no"),
            'ifequal10': ('{% ifequal a b %}yes{% else %}no{% endifequal %}', {}, "yes"),

            # SMART SPLITTING
            'ifequal-split01': ('{% ifequal a "test man" %}yes{% else %}no{% endifequal %}', {}, "no"),
            'ifequal-split02': ('{% ifequal a "test man" %}yes{% else %}no{% endifequal %}', {'a': 'foo'}, "no"),
            'ifequal-split03': ('{% ifequal a "test man" %}yes{% else %}no{% endifequal %}', {'a': 'test man'}, "yes"),
            'ifequal-split04': ("{% ifequal a 'test man' %}yes{% else %}no{% endifequal %}", {'a': 'test man'}, "yes"),
            'ifequal-split05': ("{% ifequal a 'i \"love\" you' %}yes{% else %}no{% endifequal %}", {'a': ''}, "no"),
            'ifequal-split06': ("{% ifequal a 'i \"love\" you' %}yes{% else %}no{% endifequal %}", {'a': 'i "love" you'}, "yes"),
            'ifequal-split07': ("{% ifequal a 'i \"love\" you' %}yes{% else %}no{% endifequal %}", {'a': 'i love you'}, "no"),
            'ifequal-split08': (r"{% ifequal a 'I\'m happy' %}yes{% else %}no{% endifequal %}", {'a': "I'm happy"}, "yes"),
            'ifequal-split09': (r"{% ifequal a 'slash\man' %}yes{% else %}no{% endifequal %}", {'a': r"slash\man"}, "yes"),
            'ifequal-split10': (r"{% ifequal a 'slash\man' %}yes{% else %}no{% endifequal %}", {'a': r"slashman"}, "no"),

            # NUMERIC RESOLUTION
            'ifequal-numeric01': ('{% ifequal x 5 %}yes{% endifequal %}', {'x': '5'}, ''),
            'ifequal-numeric02': ('{% ifequal x 5 %}yes{% endifequal %}', {'x': 5}, 'yes'),
            'ifequal-numeric03': ('{% ifequal x 5.2 %}yes{% endifequal %}', {'x': 5}, ''),
            'ifequal-numeric04': ('{% ifequal x 5.2 %}yes{% endifequal %}', {'x': 5.2}, 'yes'),
            'ifequal-numeric05': ('{% ifequal x 0.2 %}yes{% endifequal %}', {'x': .2}, 'yes'),
            'ifequal-numeric06': ('{% ifequal x .2 %}yes{% endifequal %}', {'x': .2}, 'yes'),
            'ifequal-numeric07': ('{% ifequal x 2. %}yes{% endifequal %}', {'x': 2}, ''),
            'ifequal-numeric08': ('{% ifequal x "5" %}yes{% endifequal %}', {'x': 5}, ''),
            'ifequal-numeric09': ('{% ifequal x "5" %}yes{% endifequal %}', {'x': '5'}, 'yes'),
            'ifequal-numeric10': ('{% ifequal x -5 %}yes{% endifequal %}', {'x': -5}, 'yes'),
            'ifequal-numeric11': ('{% ifequal x -5.2 %}yes{% endifequal %}', {'x': -5.2}, 'yes'),
            'ifequal-numeric12': ('{% ifequal x +5 %}yes{% endifequal %}', {'x': 5}, 'yes'),

            ### IFNOTEQUAL TAG ########################################################
            'ifnotequal01': ("{% ifnotequal a b %}yes{% endifnotequal %}", {"a": 1, "b": 2}, "yes"),
            'ifnotequal02': ("{% ifnotequal a b %}yes{% endifnotequal %}", {"a": 1, "b": 1}, ""),
            'ifnotequal03': ("{% ifnotequal a b %}yes{% else %}no{% endifnotequal %}", {"a": 1, "b": 2}, "yes"),
            'ifnotequal04': ("{% ifnotequal a b %}yes{% else %}no{% endifnotequal %}", {"a": 1, "b": 1}, "no"),

            ### INCLUDE TAG ###########################################################
            'include01': ('{% include "basic-syntax01" %}', {}, "something cool"),
            'include02': ('{% include "basic-syntax02" %}', {'headline': 'Included'}, "Included"),
            'include03': ('{% include template_name %}', {'template_name': 'basic-syntax02', 'headline': 'Included'}, "Included"),
            'include04': ('a{% include "nonexistent" %}b', {}, "ab"),

            ### NAMED ENDBLOCKS #######################################################

            # Basic test
            'namedendblocks01': ("1{% block first %}_{% block second %}2{% endblock second %}_{% endblock first %}3", {}, '1_2_3'),

            # Unbalanced blocks
            'namedendblocks02': ("1{% block first %}_{% block second %}2{% endblock first %}_{% endblock second %}3", {}, template.TemplateSyntaxError),
            'namedendblocks03': ("1{% block first %}_{% block second %}2{% endblock %}_{% endblock second %}3", {}, template.TemplateSyntaxError),
            'namedendblocks04': ("1{% block first %}_{% block second %}2{% endblock second %}_{% endblock third %}3", {}, template.TemplateSyntaxError),
            'namedendblocks05': ("1{% block first %}_{% block second %}2{% endblock first %}", {}, template.TemplateSyntaxError),

            # Mixed named and unnamed endblocks
            'namedendblocks06': ("1{% block first %}_{% block second %}2{% endblock %}_{% endblock first %}3", {}, '1_2_3'),
            'namedendblocks07': ("1{% block first %}_{% block second %}2{% endblock second %}_{% endblock %}3", {}, '1_2_3'),

            ### INHERITANCE ###########################################################

            # Standard template with no inheritance
            'inheritance01': ("1{% block first %}&{% endblock %}3{% block second %}_{% endblock %}", {}, '1&3_'),

            # Standard two-level inheritance
            'inheritance02': ("{% extends 'inheritance01' %}{% block first %}2{% endblock %}{% block second %}4{% endblock %}", {}, '1234'),

            # Three-level with no redefinitions on third level
            'inheritance03': ("{% extends 'inheritance02' %}", {}, '1234'),

            # Two-level with no redefinitions on second level
            'inheritance04': ("{% extends 'inheritance01' %}", {}, '1&3_'),

            # Two-level with double quotes instead of single quotes
            'inheritance05': ('{% extends "inheritance02" %}', {}, '1234'),

            # Three-level with variable parent-template name
            'inheritance06': ("{% extends foo %}", {'foo': 'inheritance02'}, '1234'),

            # Two-level with one block defined, one block not defined
            'inheritance07': ("{% extends 'inheritance01' %}{% block second %}5{% endblock %}", {}, '1&35'),

            # Three-level with one block defined on this level, two blocks defined next level
            'inheritance08': ("{% extends 'inheritance02' %}{% block second %}5{% endblock %}", {}, '1235'),

            # Three-level with second and third levels blank
            'inheritance09': ("{% extends 'inheritance04' %}", {}, '1&3_'),

            # Three-level with space NOT in a block -- should be ignored
            'inheritance10': ("{% extends 'inheritance04' %}      ", {}, '1&3_'),

            # Three-level with both blocks defined on this level, but none on second level
            'inheritance11': ("{% extends 'inheritance04' %}{% block first %}2{% endblock %}{% block second %}4{% endblock %}", {}, '1234'),

            # Three-level with this level providing one and second level providing the other
            'inheritance12': ("{% extends 'inheritance07' %}{% block first %}2{% endblock %}", {}, '1235'),

            # Three-level with this level overriding second level
            'inheritance13': ("{% extends 'inheritance02' %}{% block first %}a{% endblock %}{% block second %}b{% endblock %}", {}, '1a3b'),

            # A block defined only in a child template shouldn't be displayed
            'inheritance14': ("{% extends 'inheritance01' %}{% block newblock %}NO DISPLAY{% endblock %}", {}, '1&3_'),

            # A block within another block
            'inheritance15': ("{% extends 'inheritance01' %}{% block first %}2{% block inner %}inner{% endblock %}{% endblock %}", {}, '12inner3_'),

            # A block within another block (level 2)
            'inheritance16': ("{% extends 'inheritance15' %}{% block inner %}out{% endblock %}", {}, '12out3_'),

            # {% load %} tag (parent -- setup for exception04)
            'inheritance17': ("{% load testtags %}{% block first %}1234{% endblock %}", {}, '1234'),

            # {% load %} tag (standard usage, without inheritance)
            'inheritance18': ("{% load testtags %}{% echo this that theother %}5678", {}, 'this that theother5678'),

            # {% load %} tag (within a child template)
            'inheritance19': ("{% extends 'inheritance01' %}{% block first %}{% load testtags %}{% echo 400 %}5678{% endblock %}", {}, '140056783_'),

            # Two-level inheritance with {{ block.super }}
            'inheritance20': ("{% extends 'inheritance01' %}{% block first %}{{ block.super }}a{% endblock %}", {}, '1&a3_'),

            # Three-level inheritance with {{ block.super }} from parent
            'inheritance21': ("{% extends 'inheritance02' %}{% block first %}{{ block.super }}a{% endblock %}", {}, '12a34'),

            # Three-level inheritance with {{ block.super }} from grandparent
            'inheritance22': ("{% extends 'inheritance04' %}{% block first %}{{ block.super }}a{% endblock %}", {}, '1&a3_'),

            # Three-level inheritance with {{ block.super }} from parent and grandparent
            'inheritance23': ("{% extends 'inheritance20' %}{% block first %}{{ block.super }}b{% endblock %}", {}, '1&ab3_'),

            # Inheritance from local context without use of template loader
            'inheritance24': ("{% extends context_template %}{% block first %}2{% endblock %}{% block second %}4{% endblock %}", {'context_template': template.Template("1{% block first %}_{% endblock %}3{% block second %}_{% endblock %}")}, '1234'),

            # Inheritance from local context with variable parent template
            'inheritance25': ("{% extends context_template.1 %}{% block first %}2{% endblock %}{% block second %}4{% endblock %}", {'context_template': [template.Template("Wrong"), template.Template("1{% block first %}_{% endblock %}3{% block second %}_{% endblock %}")]}, '1234'),

            # Set up a base template to extend
            'inheritance26': ("no tags", {}, 'no tags'),

            # Inheritance from a template that doesn't have any blocks
            'inheritance27': ("{% extends 'inheritance26' %}", {}, 'no tags'),

            ### I18N ##################################################################

            # {% spaceless %} tag
            'spaceless01': ("{% spaceless %} <b>    <i> text </i>    </b> {% endspaceless %}", {}, "<b><i> text </i></b>"),
            'spaceless02': ("{% spaceless %} <b> \n <i> text </i> \n </b> {% endspaceless %}", {}, "<b><i> text </i></b>"),
            'spaceless03': ("{% spaceless %}<b><i>text</i></b>{% endspaceless %}", {}, "<b><i>text</i></b>"),

            # simple translation of a string delimited by '
            'i18n01': ("{% load i18n %}{% trans 'xxxyyyxxx' %}", {}, "xxxyyyxxx"),

            # simple translation of a string delimited by "
            'i18n02': ('{% load i18n %}{% trans "xxxyyyxxx" %}', {}, "xxxyyyxxx"),

            # simple translation of a variable
            'i18n03': ('{% load i18n %}{% blocktrans %}{{ anton }}{% endblocktrans %}', {'anton': '\xc3\x85'}, u"Å"),

            # simple translation of a variable and filter
            'i18n04': ('{% load i18n %}{% blocktrans with anton|lower as berta %}{{ berta }}{% endblocktrans %}', {'anton': '\xc3\x85'}, u'å'),

            # simple translation of a string with interpolation
            'i18n05': ('{% load i18n %}{% blocktrans %}xxx{{ anton }}xxx{% endblocktrans %}', {'anton': 'yyy'}, "xxxyyyxxx"),

            # simple translation of a string to german
            'i18n06': ('{% load i18n %}{% trans "Page not found" %}', {'LANGUAGE_CODE': 'de'}, "Seite nicht gefunden"),

            # translation of singular form
            'i18n07': ('{% load i18n %}{% blocktrans count number as counter %}singular{% plural %}{{ counter }} plural{% endblocktrans %}', {'number': 1}, "singular"),

            # translation of plural form
            'i18n08': ('{% load i18n %}{% blocktrans count number as counter %}singular{% plural %}{{ counter }} plural{% endblocktrans %}', {'number': 2}, "2 plural"),

            # simple non-translation (only marking) of a string to german
            'i18n09': ('{% load i18n %}{% trans "Page not found" noop %}', {'LANGUAGE_CODE': 'de'}, "Page not found"),

            # translation of a variable with a translated filter
            'i18n10': ('{{ bool|yesno:_("yes,no,maybe") }}', {'bool': True, 'LANGUAGE_CODE': 'de'}, 'Ja'),

            # translation of a variable with a non-translated filter
            'i18n11': ('{{ bool|yesno:"ja,nein" }}', {'bool': True}, 'ja'),

            # usage of the get_available_languages tag
            'i18n12': ('{% load i18n %}{% get_available_languages as langs %}{% for lang in langs %}{% ifequal lang.0 "de" %}{{ lang.0 }}{% endifequal %}{% endfor %}', {}, 'de'),

            # translation of constant strings
            'i18n13': ('{{ _("Password") }}', {'LANGUAGE_CODE': 'de'}, 'Passwort'),
            'i18n14': ('{% cycle "foo" _("Password") _(\'Password\') as c %} {% cycle c %} {% cycle c %}', {'LANGUAGE_CODE': 'de'}, 'foo Passwort Passwort'),
            'i18n15': ('{{ absent|default:_("Password") }}', {'LANGUAGE_CODE': 'de', 'absent': ""}, 'Passwort'),
            'i18n16': ('{{ _("<") }}', {'LANGUAGE_CODE': 'de'}, '<'),
            'i18n17': ('{{ _("") }}', {'LANGUAGE_CODE': 'de'}, ''),

            # Escaping inside blocktrans works as if it was directly in the
            # template.
            'i18n18': ('{% load i18n %}{% blocktrans with anton|escape as berta %}{{ berta }}{% endblocktrans %}', {'anton': 'α & β'}, u'α &amp; β'),
            'i18n19': ('{% load i18n %}{% blocktrans with anton|force_escape as berta %}{{ berta }}{% endblocktrans %}', {'anton': 'α & β'}, u'α &amp; β'),

            ### HANDLING OF TEMPLATE_STRING_IF_INVALID ###################################

            'invalidstr01': ('{{ var|default:"Foo" }}', {}, ('Foo','INVALID')),
            'invalidstr02': ('{{ var|default_if_none:"Foo" }}', {}, ('','INVALID')),
            'invalidstr03': ('{% for v in var %}({{ v }}){% endfor %}', {}, ''),
            'invalidstr04': ('{% if var %}Yes{% else %}No{% endif %}', {}, 'No'),
            'invalidstr04': ('{% if var|default:"Foo" %}Yes{% else %}No{% endif %}', {}, 'Yes'),
            'invalidstr05': ('{{ var }}', {}, ('', 'INVALID %s', 'var')),
            'invalidstr06': ('{{ var.prop }}', {'var': {}}, ('', 'INVALID %s', 'var.prop')),

            ### MULTILINE #############################################################

            'multiline01': ("""
                            Hello,
                            boys.
                            How
                            are
                            you
                            gentlemen.
                            """,
                            {},
                            """
                            Hello,
                            boys.
                            How
                            are
                            you
                            gentlemen.
                            """),

            ### REGROUP TAG ###########################################################
            'regroup01': ('{% regroup data by bar as grouped %}' + \
                          '{% for group in grouped %}' + \
                          '{{ group.grouper }}:' + \
                          '{% for item in group.list %}' + \
                          '{{ item.foo }}' + \
                          '{% endfor %},' + \
                          '{% endfor %}',
                          {'data': [ {'foo':'c', 'bar':1},
                                     {'foo':'d', 'bar':1},
                                     {'foo':'a', 'bar':2},
                                     {'foo':'b', 'bar':2},
                                     {'foo':'x', 'bar':3}  ]},
                          '1:cd,2:ab,3:x,'),

            # Test for silent failure when target variable isn't found
            'regroup02': ('{% regroup data by bar as grouped %}' + \
                          '{% for group in grouped %}' + \
                          '{{ group.grouper }}:' + \
                          '{% for item in group.list %}' + \
                          '{{ item.foo }}' + \
                          '{% endfor %},' + \
                          '{% endfor %}',
                          {}, ''),

            ### TEMPLATETAG TAG #######################################################
            'templatetag01': ('{% templatetag openblock %}', {}, '{%'),
            'templatetag02': ('{% templatetag closeblock %}', {}, '%}'),
            'templatetag03': ('{% templatetag openvariable %}', {}, '{{'),
            'templatetag04': ('{% templatetag closevariable %}', {}, '}}'),
            'templatetag05': ('{% templatetag %}', {}, template.TemplateSyntaxError),
            'templatetag06': ('{% templatetag foo %}', {}, template.TemplateSyntaxError),
            'templatetag07': ('{% templatetag openbrace %}', {}, '{'),
            'templatetag08': ('{% templatetag closebrace %}', {}, '}'),
            'templatetag09': ('{% templatetag openbrace %}{% templatetag openbrace %}', {}, '{{'),
            'templatetag10': ('{% templatetag closebrace %}{% templatetag closebrace %}', {}, '}}'),
            'templatetag11': ('{% templatetag opencomment %}', {}, '{#'),
            'templatetag12': ('{% templatetag closecomment %}', {}, '#}'),

            ### WIDTHRATIO TAG ########################################################
            'widthratio01': ('{% widthratio a b 0 %}', {'a':50,'b':100}, '0'),
            'widthratio02': ('{% widthratio a b 100 %}', {'a':0,'b':0}, ''),
            'widthratio03': ('{% widthratio a b 100 %}', {'a':0,'b':100}, '0'),
            'widthratio04': ('{% widthratio a b 100 %}', {'a':50,'b':100}, '50'),
            'widthratio05': ('{% widthratio a b 100 %}', {'a':100,'b':100}, '100'),

            # 62.5 should round to 63
            'widthratio06': ('{% widthratio a b 100 %}', {'a':50,'b':80}, '63'),

            # 71.4 should round to 71
            'widthratio07': ('{% widthratio a b 100 %}', {'a':50,'b':70}, '71'),

            # Raise exception if we don't have 3 args, last one an integer
            'widthratio08': ('{% widthratio %}', {}, template.TemplateSyntaxError),
            'widthratio09': ('{% widthratio a b %}', {'a':50,'b':100}, template.TemplateSyntaxError),
            'widthratio10': ('{% widthratio a b 100.0 %}', {'a':50,'b':100}, template.TemplateSyntaxError),

            ### WITH TAG ########################################################
            'with01': ('{% with dict.key as key %}{{ key }}{% endwith %}', {'dict': {'key':50}}, '50'),
            'with02': ('{{ key }}{% with dict.key as key %}{{ key }}-{{ dict.key }}-{{ key }}{% endwith %}{{ key }}', {'dict': {'key':50}}, ('50-50-50', 'INVALID50-50-50INVALID')),

            'with-error01': ('{% with dict.key xx key %}{{ key }}{% endwith %}', {'dict': {'key':50}}, template.TemplateSyntaxError),
            'with-error02': ('{% with dict.key as %}{{ key }}{% endwith %}', {'dict': {'key':50}}, template.TemplateSyntaxError),

            ### NOW TAG ########################################################
            # Simple case
            'now01': ('{% now "j n Y"%}', {}, str(datetime.now().day) + ' ' + str(datetime.now().month) + ' ' + str(datetime.now().year)),

            # Check parsing of escaped and special characters
            'now02': ('{% now "j "n" Y"%}', {}, template.TemplateSyntaxError),
        #    'now03': ('{% now "j \"n\" Y"%}', {}, str(datetime.now().day) + '"' + str(datetime.now().month) + '"' + str(datetime.now().year)),
        #    'now04': ('{% now "j \nn\n Y"%}', {}, str(datetime.now().day) + '\n' + str(datetime.now().month) + '\n' + str(datetime.now().year))

            ### URL TAG ########################################################
            # Successes
            'url01': ('{% url regressiontests.templates.views.client client.id %}', {'client': {'id': 1}}, '/url_tag/client/1/'),
            'url02': ('{% url regressiontests.templates.views.client_action id=client.id,action="update" %}', {'client': {'id': 1}}, '/url_tag/client/1/update/'),
            'url02a': ('{% url regressiontests.templates.views.client_action client.id,"update" %}', {'client': {'id': 1}}, '/url_tag/client/1/update/'),
            'url03': ('{% url regressiontests.templates.views.index %}', {}, '/url_tag/'),
            'url04': ('{% url named.client client.id %}', {'client': {'id': 1}}, '/url_tag/named-client/1/'),
            'url05': (u'{% url метка_оператора v %}', {'v': u'Ω'}, '/url_tag/%D0%AE%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4/%CE%A9/'),
            'url06': (u'{% url метка_оператора_2 tag=v %}', {'v': u'Ω'}, '/url_tag/%D0%AE%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4/%CE%A9/'),
            'url07': (u'{% url regressiontests.templates.views.client2 tag=v %}', {'v': u'Ω'}, '/url_tag/%D0%AE%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4/%CE%A9/'),
            'url08': (u'{% url метка_оператора v %}', {'v': 'Ω'}, '/url_tag/%D0%AE%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4/%CE%A9/'),
            'url09': (u'{% url метка_оператора_2 tag=v %}', {'v': 'Ω'}, '/url_tag/%D0%AE%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4/%CE%A9/'),

            # Failures
            'url-fail01': ('{% url %}', {}, template.TemplateSyntaxError),
            'url-fail02': ('{% url no_such_view %}', {}, urlresolvers.NoReverseMatch),
            'url-fail03': ('{% url regressiontests.templates.views.client %}', {}, urlresolvers.NoReverseMatch),

            # {% url ... as var %}
            'url-asvar01': ('{% url regressiontests.templates.views.index as url %}', {}, ''),
            'url-asvar02': ('{% url regressiontests.templates.views.index as url %}{{ url }}', {}, '/url_tag/'),
            'url-asvar03': ('{% url no_such_view as url %}{{ url }}', {}, ''),

            ### CACHE TAG ######################################################
            'cache01': ('{% load cache %}{% cache -1 test %}cache01{% endcache %}', {}, 'cache01'),
            'cache02': ('{% load cache %}{% cache -1 test %}cache02{% endcache %}', {}, 'cache02'),
            'cache03': ('{% load cache %}{% cache 2 test %}cache03{% endcache %}', {}, 'cache03'),
            'cache04': ('{% load cache %}{% cache 2 test %}cache04{% endcache %}', {}, 'cache03'),
            'cache05': ('{% load cache %}{% cache 2 test foo %}cache05{% endcache %}', {'foo': 1}, 'cache05'),
            'cache06': ('{% load cache %}{% cache 2 test foo %}cache06{% endcache %}', {'foo': 2}, 'cache06'),
            'cache07': ('{% load cache %}{% cache 2 test foo %}cache07{% endcache %}', {'foo': 1}, 'cache05'),

            # Allow first argument to be a variable.
            'cache08': ('{% load cache %}{% cache time test foo %}cache08{% endcache %}', {'foo': 2, 'time': 2}, 'cache06'),
            'cache09': ('{% load cache %}{% cache time test foo %}cache09{% endcache %}', {'foo': 3, 'time': -1}, 'cache09'),
            'cache10': ('{% load cache %}{% cache time test foo %}cache10{% endcache %}', {'foo': 3, 'time': -1}, 'cache10'),

            # Raise exception if we don't have at least 2 args, first one integer.
            'cache11': ('{% load cache %}{% cache %}{% endcache %}', {}, template.TemplateSyntaxError),
            'cache12': ('{% load cache %}{% cache 1 %}{% endcache %}', {}, template.TemplateSyntaxError),
            'cache13': ('{% load cache %}{% cache foo bar %}{% endcache %}', {}, template.TemplateSyntaxError),
            'cache14': ('{% load cache %}{% cache foo bar %}{% endcache %}', {'foo': 'fail'}, template.TemplateSyntaxError),
            'cache15': ('{% load cache %}{% cache foo bar %}{% endcache %}', {'foo': []}, template.TemplateSyntaxError),

            # Regression test for #7460.
            'cache16': ('{% load cache %}{% cache 1 foo bar %}{% endcache %}', {'foo': 'foo', 'bar': 'with spaces'}, ''),

            ### AUTOESCAPE TAG ##############################################
            'autoescape-tag01': ("{% autoescape off %}hello{% endautoescape %}", {}, "hello"),
            'autoescape-tag02': ("{% autoescape off %}{{ first }}{% endautoescape %}", {"first": "<b>hello</b>"}, "<b>hello</b>"),
            'autoescape-tag03': ("{% autoescape on %}{{ first }}{% endautoescape %}", {"first": "<b>hello</b>"}, "&lt;b&gt;hello&lt;/b&gt;"),

            # Autoescape disabling and enabling nest in a predictable way.
            'autoescape-tag04': ("{% autoescape off %}{{ first }} {% autoescape  on%}{{ first }}{% endautoescape %}{% endautoescape %}", {"first": "<a>"}, "<a> &lt;a&gt;"),

            'autoescape-tag05': ("{% autoescape on %}{{ first }}{% endautoescape %}", {"first": "<b>first</b>"}, "&lt;b&gt;first&lt;/b&gt;"),

            # Strings (ASCII or unicode) already marked as "safe" are not
            # auto-escaped
            'autoescape-tag06': ("{{ first }}", {"first": mark_safe("<b>first</b>")}, "<b>first</b>"),
            'autoescape-tag07': ("{% autoescape on %}{{ first }}{% endautoescape %}", {"first": mark_safe(u"<b>Apple</b>")}, u"<b>Apple</b>"),

            # Literal string arguments to filters, if used in the result, are
            # safe.
            'autoescape-tag08': (r'{% autoescape on %}{{ var|default_if_none:" endquote\" hah" }}{% endautoescape %}', {"var": None}, ' endquote" hah'),

            # Objects which return safe strings as their __unicode__ method
            # won't get double-escaped.
            'autoescape-tag09': (r'{{ unsafe }}', {'unsafe': filters.UnsafeClass()}, 'you &amp; me'),
            'autoescape-tag10': (r'{{ safe }}', {'safe': filters.SafeClass()}, 'you &gt; me'),

            # The "safe" and "escape" filters cannot work due to internal
            # implementation details (fortunately, the (no)autoescape block
            # tags can be used in those cases)
            'autoescape-filtertag01': ("{{ first }}{% filter safe %}{{ first }} x<y{% endfilter %}", {"first": "<a>"}, template.TemplateSyntaxError),
        }

if __name__ == "__main__":
    unittest.main()