721 lines
28 KiB
Python
721 lines
28 KiB
Python
from __future__ import with_statement
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import re
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import sys
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from functools import wraps
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from urlparse import urlsplit, urlunsplit
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from xml.dom.minidom import parseString, Node
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from django.conf import settings
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from django.core import mail
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from django.core.exceptions import ValidationError
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from django.core.management import call_command
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from django.core.signals import request_started
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from django.core.urlresolvers import clear_url_caches
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from django.core.validators import EMPTY_VALUES
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from django.db import (transaction, connection, connections, DEFAULT_DB_ALIAS,
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reset_queries)
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from django.forms.fields import CharField
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from django.http import QueryDict
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from django.test import _doctest as doctest
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from django.test.client import Client
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from django.test.utils import (get_warnings_state, restore_warnings_state,
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override_settings)
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from django.utils import simplejson, unittest as ut2
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from django.utils.encoding import smart_str
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__all__ = ('DocTestRunner', 'OutputChecker', 'TestCase', 'TransactionTestCase',
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'SimpleTestCase', 'skipIfDBFeature', 'skipUnlessDBFeature')
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normalize_long_ints = lambda s: re.sub(r'(?<![\w])(\d+)L(?![\w])', '\\1', s)
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normalize_decimals = lambda s: re.sub(r"Decimal\('(\d+(\.\d*)?)'\)",
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lambda m: "Decimal(\"%s\")" % m.groups()[0], s)
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def to_list(value):
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"""
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Puts value into a list if it's not already one.
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Returns an empty list if value is None.
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"""
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if value is None:
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value = []
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elif not isinstance(value, list):
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value = [value]
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return value
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real_commit = transaction.commit
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real_rollback = transaction.rollback
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real_enter_transaction_management = transaction.enter_transaction_management
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real_leave_transaction_management = transaction.leave_transaction_management
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real_managed = transaction.managed
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def nop(*args, **kwargs):
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return
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def disable_transaction_methods():
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transaction.commit = nop
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transaction.rollback = nop
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transaction.enter_transaction_management = nop
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transaction.leave_transaction_management = nop
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transaction.managed = nop
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def restore_transaction_methods():
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transaction.commit = real_commit
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transaction.rollback = real_rollback
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transaction.enter_transaction_management = real_enter_transaction_management
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transaction.leave_transaction_management = real_leave_transaction_management
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transaction.managed = real_managed
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class OutputChecker(doctest.OutputChecker):
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def check_output(self, want, got, optionflags):
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"""
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The entry method for doctest output checking. Defers to a sequence of child checkers
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"""
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checks = (self.check_output_default,
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self.check_output_numeric,
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self.check_output_xml,
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self.check_output_json)
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for check in checks:
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if check(want, got, optionflags):
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return True
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return False
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def check_output_default(self, want, got, optionflags):
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"""
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The default comparator provided by doctest - not perfect, but good for
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most purposes
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"""
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return doctest.OutputChecker.check_output(self, want, got, optionflags)
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def check_output_numeric(self, want, got, optionflags):
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"""Doctest does an exact string comparison of output, which means that
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some numerically equivalent values aren't equal. This check normalizes
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* long integers (22L) so that they equal normal integers. (22)
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* Decimals so that they are comparable, regardless of the change
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made to __repr__ in Python 2.6.
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"""
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return doctest.OutputChecker.check_output(self,
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normalize_decimals(normalize_long_ints(want)),
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normalize_decimals(normalize_long_ints(got)),
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optionflags)
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def check_output_xml(self, want, got, optionsflags):
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"""Tries to do a 'xml-comparision' of want and got. Plain string
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comparision doesn't always work because, for example, attribute
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ordering should not be important.
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Based on http://codespeak.net/svn/lxml/trunk/src/lxml/doctestcompare.py
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"""
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_norm_whitespace_re = re.compile(r'[ \t\n][ \t\n]+')
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def norm_whitespace(v):
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return _norm_whitespace_re.sub(' ', v)
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def child_text(element):
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return ''.join([c.data for c in element.childNodes
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if c.nodeType == Node.TEXT_NODE])
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def children(element):
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return [c for c in element.childNodes
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if c.nodeType == Node.ELEMENT_NODE]
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def norm_child_text(element):
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return norm_whitespace(child_text(element))
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def attrs_dict(element):
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return dict(element.attributes.items())
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def check_element(want_element, got_element):
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if want_element.tagName != got_element.tagName:
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return False
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if norm_child_text(want_element) != norm_child_text(got_element):
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return False
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if attrs_dict(want_element) != attrs_dict(got_element):
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return False
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want_children = children(want_element)
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got_children = children(got_element)
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if len(want_children) != len(got_children):
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return False
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for want, got in zip(want_children, got_children):
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if not check_element(want, got):
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return False
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return True
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want, got = self._strip_quotes(want, got)
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want = want.replace('\\n','\n')
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got = got.replace('\\n','\n')
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# If the string is not a complete xml document, we may need to add a
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# root element. This allow us to compare fragments, like "<foo/><bar/>"
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if not want.startswith('<?xml'):
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wrapper = '<root>%s</root>'
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want = wrapper % want
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got = wrapper % got
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# Parse the want and got strings, and compare the parsings.
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try:
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want_root = parseString(want).firstChild
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got_root = parseString(got).firstChild
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except Exception:
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return False
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return check_element(want_root, got_root)
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def check_output_json(self, want, got, optionsflags):
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"""
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Tries to compare want and got as if they were JSON-encoded data
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"""
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want, got = self._strip_quotes(want, got)
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try:
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want_json = simplejson.loads(want)
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got_json = simplejson.loads(got)
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except Exception:
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return False
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return want_json == got_json
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def _strip_quotes(self, want, got):
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"""
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Strip quotes of doctests output values:
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>>> o = OutputChecker()
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>>> o._strip_quotes("'foo'")
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"foo"
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>>> o._strip_quotes('"foo"')
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"foo"
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>>> o._strip_quotes("u'foo'")
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"foo"
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>>> o._strip_quotes('u"foo"')
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"foo"
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"""
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def is_quoted_string(s):
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s = s.strip()
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return (len(s) >= 2
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and s[0] == s[-1]
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and s[0] in ('"', "'"))
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def is_quoted_unicode(s):
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s = s.strip()
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return (len(s) >= 3
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and s[0] == 'u'
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and s[1] == s[-1]
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and s[1] in ('"', "'"))
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if is_quoted_string(want) and is_quoted_string(got):
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want = want.strip()[1:-1]
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got = got.strip()[1:-1]
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elif is_quoted_unicode(want) and is_quoted_unicode(got):
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want = want.strip()[2:-1]
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got = got.strip()[2:-1]
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return want, got
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class DocTestRunner(doctest.DocTestRunner):
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def __init__(self, *args, **kwargs):
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doctest.DocTestRunner.__init__(self, *args, **kwargs)
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self.optionflags = doctest.ELLIPSIS
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def report_unexpected_exception(self, out, test, example, exc_info):
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doctest.DocTestRunner.report_unexpected_exception(self, out, test,
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example, exc_info)
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# Rollback, in case of database errors. Otherwise they'd have
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# side effects on other tests.
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for conn in connections:
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transaction.rollback_unless_managed(using=conn)
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class _AssertNumQueriesContext(object):
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def __init__(self, test_case, num, connection):
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self.test_case = test_case
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self.num = num
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self.connection = connection
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def __enter__(self):
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self.old_debug_cursor = self.connection.use_debug_cursor
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self.connection.use_debug_cursor = True
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self.starting_queries = len(self.connection.queries)
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request_started.disconnect(reset_queries)
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return self
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def __exit__(self, exc_type, exc_value, traceback):
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self.connection.use_debug_cursor = self.old_debug_cursor
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request_started.connect(reset_queries)
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if exc_type is not None:
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return
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final_queries = len(self.connection.queries)
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executed = final_queries - self.starting_queries
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self.test_case.assertEqual(
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executed, self.num, "%d queries executed, %d expected" % (
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executed, self.num
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)
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)
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class SimpleTestCase(ut2.TestCase):
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def save_warnings_state(self):
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"""
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Saves the state of the warnings module
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"""
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self._warnings_state = get_warnings_state()
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def restore_warnings_state(self):
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"""
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Restores the state of the warnings module to the state
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saved by save_warnings_state()
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"""
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restore_warnings_state(self._warnings_state)
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def settings(self, **kwargs):
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"""
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A context manager that temporarily sets a setting and reverts
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back to the original value when exiting the context.
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"""
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return override_settings(**kwargs)
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def assertRaisesMessage(self, expected_exception, expected_message,
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callable_obj=None, *args, **kwargs):
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"""
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Asserts that the message in a raised exception matches the passed
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value.
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Args:
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expected_exception: Exception class expected to be raised.
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expected_message: expected error message string value.
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callable_obj: Function to be called.
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args: Extra args.
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kwargs: Extra kwargs.
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"""
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return self.assertRaisesRegexp(expected_exception,
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re.escape(expected_message), callable_obj, *args, **kwargs)
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def assertFieldOutput(self, fieldclass, valid, invalid, field_args=None,
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field_kwargs=None, empty_value=u''):
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"""
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Asserts that a form field behaves correctly with various inputs.
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Args:
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fieldclass: the class of the field to be tested.
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valid: a dictionary mapping valid inputs to their expected
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cleaned values.
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invalid: a dictionary mapping invalid inputs to one or more
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raised error messages.
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field_args: the args passed to instantiate the field
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field_kwargs: the kwargs passed to instantiate the field
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empty_value: the expected clean output for inputs in EMPTY_VALUES
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"""
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if field_args is None:
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field_args = []
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if field_kwargs is None:
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field_kwargs = {}
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required = fieldclass(*field_args, **field_kwargs)
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optional = fieldclass(*field_args,
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**dict(field_kwargs, required=False))
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# test valid inputs
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for input, output in valid.items():
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self.assertEqual(required.clean(input), output)
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self.assertEqual(optional.clean(input), output)
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# test invalid inputs
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for input, errors in invalid.items():
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with self.assertRaises(ValidationError) as context_manager:
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required.clean(input)
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self.assertEqual(context_manager.exception.messages, errors)
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with self.assertRaises(ValidationError) as context_manager:
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optional.clean(input)
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self.assertEqual(context_manager.exception.messages, errors)
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# test required inputs
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error_required = [u'This field is required.']
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for e in EMPTY_VALUES:
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with self.assertRaises(ValidationError) as context_manager:
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required.clean(e)
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self.assertEqual(context_manager.exception.messages,
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error_required)
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self.assertEqual(optional.clean(e), empty_value)
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# test that max_length and min_length are always accepted
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if issubclass(fieldclass, CharField):
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field_kwargs.update({'min_length':2, 'max_length':20})
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self.assertTrue(isinstance(fieldclass(*field_args, **field_kwargs),
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fieldclass))
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class TransactionTestCase(SimpleTestCase):
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# The class we'll use for the test client self.client.
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# Can be overridden in derived classes.
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client_class = Client
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def _pre_setup(self):
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"""Performs any pre-test setup. This includes:
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* Flushing the database.
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* If the Test Case class has a 'fixtures' member, installing the
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named fixtures.
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* If the Test Case class has a 'urls' member, replace the
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ROOT_URLCONF with it.
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* Clearing the mail test outbox.
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"""
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self._fixture_setup()
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self._urlconf_setup()
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mail.outbox = []
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def _fixture_setup(self):
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# If the test case has a multi_db=True flag, flush all databases.
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# Otherwise, just flush default.
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if getattr(self, 'multi_db', False):
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databases = connections
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else:
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databases = [DEFAULT_DB_ALIAS]
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for db in databases:
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call_command('flush', verbosity=0, interactive=False, database=db)
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if hasattr(self, 'fixtures'):
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# We have to use this slightly awkward syntax due to the fact
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# that we're using *args and **kwargs together.
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call_command('loaddata', *self.fixtures,
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**{'verbosity': 0, 'database': db})
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def _urlconf_setup(self):
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if hasattr(self, 'urls'):
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self._old_root_urlconf = settings.ROOT_URLCONF
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settings.ROOT_URLCONF = self.urls
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clear_url_caches()
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def __call__(self, result=None):
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"""
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Wrapper around default __call__ method to perform common Django test
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set up. This means that user-defined Test Cases aren't required to
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include a call to super().setUp().
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"""
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testMethod = getattr(self, self._testMethodName)
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skipped = (getattr(self.__class__, "__unittest_skip__", False) or
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getattr(testMethod, "__unittest_skip__", False))
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if not skipped:
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self.client = self.client_class()
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try:
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self._pre_setup()
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except (KeyboardInterrupt, SystemExit):
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raise
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except Exception:
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result.addError(self, sys.exc_info())
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return
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super(TransactionTestCase, self).__call__(result)
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if not skipped:
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try:
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self._post_teardown()
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except (KeyboardInterrupt, SystemExit):
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raise
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except Exception:
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result.addError(self, sys.exc_info())
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return
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|
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def _post_teardown(self):
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""" Performs any post-test things. This includes:
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* Putting back the original ROOT_URLCONF if it was changed.
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* Force closing the connection, so that the next test gets
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a clean cursor.
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"""
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self._fixture_teardown()
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self._urlconf_teardown()
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# Some DB cursors include SQL statements as part of cursor
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# creation. If you have a test that does rollback, the effect
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# of these statements is lost, which can effect the operation
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# of tests (e.g., losing a timezone setting causing objects to
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# be created with the wrong time).
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# To make sure this doesn't happen, get a clean connection at the
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# start of every test.
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for conn in connections.all():
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conn.close()
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|
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def _fixture_teardown(self):
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pass
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def _urlconf_teardown(self):
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if hasattr(self, '_old_root_urlconf'):
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settings.ROOT_URLCONF = self._old_root_urlconf
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clear_url_caches()
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|
|
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def assertRedirects(self, response, expected_url, status_code=302,
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target_status_code=200, host=None, msg_prefix=''):
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"""Asserts that a response redirected to a specific URL, and that the
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redirect URL can be loaded.
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Note that assertRedirects won't work for external links since it uses
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TestClient to do a request.
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"""
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if msg_prefix:
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msg_prefix += ": "
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|
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if hasattr(response, 'redirect_chain'):
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# The request was a followed redirect
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self.assertTrue(len(response.redirect_chain) > 0,
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msg_prefix + "Response didn't redirect as expected: Response"
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" code was %d (expected %d)" %
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(response.status_code, status_code))
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self.assertEqual(response.redirect_chain[0][1], status_code,
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msg_prefix + "Initial response didn't redirect as expected:"
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" Response code was %d (expected %d)" %
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(response.redirect_chain[0][1], status_code))
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url, status_code = response.redirect_chain[-1]
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self.assertEqual(response.status_code, target_status_code,
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msg_prefix + "Response didn't redirect as expected: Final"
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" Response code was %d (expected %d)" %
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(response.status_code, target_status_code))
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else:
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# Not a followed redirect
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self.assertEqual(response.status_code, status_code,
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msg_prefix + "Response didn't redirect as expected: Response"
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" code was %d (expected %d)" %
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(response.status_code, status_code))
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url = response['Location']
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scheme, netloc, path, query, fragment = urlsplit(url)
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redirect_response = response.client.get(path, QueryDict(query))
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# Get the redirection page, using the same client that was used
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# to obtain the original response.
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self.assertEqual(redirect_response.status_code, target_status_code,
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msg_prefix + "Couldn't retrieve redirection page '%s':"
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" response code was %d (expected %d)" %
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(path, redirect_response.status_code, target_status_code))
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e_scheme, e_netloc, e_path, e_query, e_fragment = urlsplit(
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expected_url)
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if not (e_scheme or e_netloc):
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expected_url = urlunsplit(('http', host or 'testserver', e_path,
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e_query, e_fragment))
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|
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self.assertEqual(url, expected_url,
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msg_prefix + "Response redirected to '%s', expected '%s'" %
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(url, expected_url))
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|
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def assertContains(self, response, text, count=None, status_code=200,
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msg_prefix=''):
|
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"""
|
|
Asserts that a response indicates that some content was retrieved
|
|
successfully, (i.e., the HTTP status code was as expected), and that
|
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``text`` occurs ``count`` times in the content of the response.
|
|
If ``count`` is None, the count doesn't matter - the assertion is true
|
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if the text occurs at least once in the response.
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"""
|
|
if msg_prefix:
|
|
msg_prefix += ": "
|
|
|
|
self.assertEqual(response.status_code, status_code,
|
|
msg_prefix + "Couldn't retrieve content: Response code was %d"
|
|
" (expected %d)" % (response.status_code, status_code))
|
|
text = smart_str(text, response._charset)
|
|
real_count = response.content.count(text)
|
|
if count is not None:
|
|
self.assertEqual(real_count, count,
|
|
msg_prefix + "Found %d instances of '%s' in response"
|
|
" (expected %d)" % (real_count, text, count))
|
|
else:
|
|
self.assertTrue(real_count != 0,
|
|
msg_prefix + "Couldn't find '%s' in response" % text)
|
|
|
|
def assertNotContains(self, response, text, status_code=200,
|
|
msg_prefix=''):
|
|
"""
|
|
Asserts that a response indicates that some content was retrieved
|
|
successfully, (i.e., the HTTP status code was as expected), and that
|
|
``text`` doesn't occurs in the content of the response.
|
|
"""
|
|
if msg_prefix:
|
|
msg_prefix += ": "
|
|
|
|
self.assertEqual(response.status_code, status_code,
|
|
msg_prefix + "Couldn't retrieve content: Response code was %d"
|
|
" (expected %d)" % (response.status_code, status_code))
|
|
text = smart_str(text, response._charset)
|
|
self.assertEqual(response.content.count(text), 0,
|
|
msg_prefix + "Response should not contain '%s'" % text)
|
|
|
|
def assertFormError(self, response, form, field, errors, msg_prefix=''):
|
|
"""
|
|
Asserts that a form used to render the response has a specific field
|
|
error.
|
|
"""
|
|
if msg_prefix:
|
|
msg_prefix += ": "
|
|
|
|
# Put context(s) into a list to simplify processing.
|
|
contexts = to_list(response.context)
|
|
if not contexts:
|
|
self.fail(msg_prefix + "Response did not use any contexts to "
|
|
"render the response")
|
|
|
|
# Put error(s) into a list to simplify processing.
|
|
errors = to_list(errors)
|
|
|
|
# Search all contexts for the error.
|
|
found_form = False
|
|
for i,context in enumerate(contexts):
|
|
if form not in context:
|
|
continue
|
|
found_form = True
|
|
for err in errors:
|
|
if field:
|
|
if field in context[form].errors:
|
|
field_errors = context[form].errors[field]
|
|
self.assertTrue(err in field_errors,
|
|
msg_prefix + "The field '%s' on form '%s' in"
|
|
" context %d does not contain the error '%s'"
|
|
" (actual errors: %s)" %
|
|
(field, form, i, err, repr(field_errors)))
|
|
elif field in context[form].fields:
|
|
self.fail(msg_prefix + "The field '%s' on form '%s'"
|
|
" in context %d contains no errors" %
|
|
(field, form, i))
|
|
else:
|
|
self.fail(msg_prefix + "The form '%s' in context %d"
|
|
" does not contain the field '%s'" %
|
|
(form, i, field))
|
|
else:
|
|
non_field_errors = context[form].non_field_errors()
|
|
self.assertTrue(err in non_field_errors,
|
|
msg_prefix + "The form '%s' in context %d does not"
|
|
" contain the non-field error '%s'"
|
|
" (actual errors: %s)" %
|
|
(form, i, err, non_field_errors))
|
|
if not found_form:
|
|
self.fail(msg_prefix + "The form '%s' was not used to render the"
|
|
" response" % form)
|
|
|
|
def assertTemplateUsed(self, response, template_name, msg_prefix=''):
|
|
"""
|
|
Asserts that the template with the provided name was used in rendering
|
|
the response.
|
|
"""
|
|
if msg_prefix:
|
|
msg_prefix += ": "
|
|
|
|
template_names = [t.name for t in response.templates]
|
|
if not template_names:
|
|
self.fail(msg_prefix + "No templates used to render the response")
|
|
self.assertTrue(template_name in template_names,
|
|
msg_prefix + "Template '%s' was not a template used to render"
|
|
" the response. Actual template(s) used: %s" %
|
|
(template_name, u', '.join(template_names)))
|
|
|
|
def assertTemplateNotUsed(self, response, template_name, msg_prefix=''):
|
|
"""
|
|
Asserts that the template with the provided name was NOT used in
|
|
rendering the response.
|
|
"""
|
|
if msg_prefix:
|
|
msg_prefix += ": "
|
|
|
|
template_names = [t.name for t in response.templates]
|
|
self.assertFalse(template_name in template_names,
|
|
msg_prefix + "Template '%s' was used unexpectedly in rendering"
|
|
" the response" % template_name)
|
|
|
|
def assertQuerysetEqual(self, qs, values, transform=repr, ordered=True):
|
|
if not ordered:
|
|
return self.assertEqual(set(map(transform, qs)), set(values))
|
|
return self.assertEqual(map(transform, qs), values)
|
|
|
|
def assertNumQueries(self, num, func=None, *args, **kwargs):
|
|
using = kwargs.pop("using", DEFAULT_DB_ALIAS)
|
|
conn = connections[using]
|
|
|
|
context = _AssertNumQueriesContext(self, num, conn)
|
|
if func is None:
|
|
return context
|
|
|
|
with context:
|
|
func(*args, **kwargs)
|
|
|
|
def connections_support_transactions():
|
|
"""
|
|
Returns True if all connections support transactions.
|
|
"""
|
|
return all(conn.features.supports_transactions
|
|
for conn in connections.all())
|
|
|
|
class TestCase(TransactionTestCase):
|
|
"""
|
|
Does basically the same as TransactionTestCase, but surrounds every test
|
|
with a transaction, monkey-patches the real transaction management routines
|
|
to do nothing, and rollsback the test transaction at the end of the test.
|
|
You have to use TransactionTestCase, if you need transaction management
|
|
inside a test.
|
|
"""
|
|
|
|
def _fixture_setup(self):
|
|
if not connections_support_transactions():
|
|
return super(TestCase, self)._fixture_setup()
|
|
|
|
# If the test case has a multi_db=True flag, setup all databases.
|
|
# Otherwise, just use default.
|
|
if getattr(self, 'multi_db', False):
|
|
databases = connections
|
|
else:
|
|
databases = [DEFAULT_DB_ALIAS]
|
|
|
|
for db in databases:
|
|
transaction.enter_transaction_management(using=db)
|
|
transaction.managed(True, using=db)
|
|
disable_transaction_methods()
|
|
|
|
from django.contrib.sites.models import Site
|
|
Site.objects.clear_cache()
|
|
|
|
for db in databases:
|
|
if hasattr(self, 'fixtures'):
|
|
call_command('loaddata', *self.fixtures,
|
|
**{
|
|
'verbosity': 0,
|
|
'commit': False,
|
|
'database': db
|
|
})
|
|
|
|
def _fixture_teardown(self):
|
|
if not connections_support_transactions():
|
|
return super(TestCase, self)._fixture_teardown()
|
|
|
|
# If the test case has a multi_db=True flag, teardown all databases.
|
|
# Otherwise, just teardown default.
|
|
if getattr(self, 'multi_db', False):
|
|
databases = connections
|
|
else:
|
|
databases = [DEFAULT_DB_ALIAS]
|
|
|
|
restore_transaction_methods()
|
|
for db in databases:
|
|
transaction.rollback(using=db)
|
|
transaction.leave_transaction_management(using=db)
|
|
|
|
def _deferredSkip(condition, reason):
|
|
def decorator(test_func):
|
|
if not (isinstance(test_func, type) and
|
|
issubclass(test_func, TestCase)):
|
|
@wraps(test_func)
|
|
def skip_wrapper(*args, **kwargs):
|
|
if condition():
|
|
raise ut2.SkipTest(reason)
|
|
return test_func(*args, **kwargs)
|
|
test_item = skip_wrapper
|
|
else:
|
|
test_item = test_func
|
|
test_item.__unittest_skip_why__ = reason
|
|
return test_item
|
|
return decorator
|
|
|
|
def skipIfDBFeature(feature):
|
|
"""
|
|
Skip a test if a database has the named feature
|
|
"""
|
|
return _deferredSkip(lambda: getattr(connection.features, feature),
|
|
"Database has feature %s" % feature)
|
|
|
|
def skipUnlessDBFeature(feature):
|
|
"""
|
|
Skip a test unless a database has the named feature
|
|
"""
|
|
return _deferredSkip(lambda: not getattr(connection.features, feature),
|
|
"Database doesn't support feature %s" % feature)
|