193 lines
8.4 KiB
Python
193 lines
8.4 KiB
Python
import re
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import unittest
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from urlparse import urlsplit, urlunsplit
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from django.http import QueryDict
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from django.db import transaction
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from django.core import mail
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from django.core.management import call_command
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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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normalize_long_ints = lambda s: re.sub(r'(?<![\w])(\d+)L(?![\w])', '\\1', 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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class OutputChecker(doctest.OutputChecker):
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def check_output(self, want, got, optionflags):
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ok = doctest.OutputChecker.check_output(self, want, got, optionflags)
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# Doctest does an exact string comparison of output, which means long
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# integers aren't equal to normal integers ("22L" vs. "22"). The
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# following code normalizes long integers so that they equal normal
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# integers.
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if not ok:
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return normalize_long_ints(want) == normalize_long_ints(got)
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return ok
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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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transaction.rollback_unless_managed()
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class TestCase(unittest.TestCase):
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def _pre_setup(self):
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"""Performs any pre-test setup. This includes:
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* If the Test Case class has a 'fixtures' member, clearing the
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database and installing the named fixtures at the start of each
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test.
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* Clearing the mail test outbox.
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"""
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call_command('flush', verbosity=0, interactive=False)
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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, **{'verbosity': 0})
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mail.outbox = []
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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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self.client = Client()
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self._pre_setup()
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super(TestCase, self).__call__(result)
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def assertRedirects(self, response, expected_url, status_code=302,
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target_status_code=200, host=None):
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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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self.assertEqual(response.status_code, status_code,
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("Response didn't redirect as expected: Response code was %d"
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" (expected %d)" % (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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e_scheme, e_netloc, e_path, e_query, e_fragment = urlsplit(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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self.assertEqual(url, expected_url,
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"Response redirected to '%s', expected '%s'" % (url, expected_url))
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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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redirect_response = response.client.get(path, QueryDict(query))
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self.assertEqual(redirect_response.status_code, target_status_code,
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("Couldn't retrieve redirection page '%s': response code was %d"
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" (expected %d)") %
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(path, redirect_response.status_code, target_status_code))
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def assertContains(self, response, text, count=None, status_code=200):
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"""
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Asserts that a response indicates that a page was retreived
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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.
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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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"""
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self.assertEqual(response.status_code, status_code,
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"Couldn't retrieve page: Response code was %d (expected %d)'" %
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(response.status_code, status_code))
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real_count = response.content.count(text)
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if count is not None:
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self.assertEqual(real_count, count,
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"Found %d instances of '%s' in response (expected %d)" %
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(real_count, text, count))
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else:
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self.failUnless(real_count != 0,
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"Couldn't find '%s' in response" % text)
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def assertFormError(self, response, form, field, errors):
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"""
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Asserts that a form used to render the response has a specific field
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error.
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"""
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# Put context(s) into a list to simplify processing.
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contexts = to_list(response.context)
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if not contexts:
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self.fail('Response did not use any contexts to render the'
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' response')
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# Put error(s) into a list to simplify processing.
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errors = to_list(errors)
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# Search all contexts for the error.
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found_form = False
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for i,context in enumerate(contexts):
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if form not in context:
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continue
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found_form = True
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for err in errors:
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if field:
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if field in context[form].errors:
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field_errors = context[form].errors[field]
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self.failUnless(err in field_errors,
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"The field '%s' on form '%s' in"
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" context %d does not contain the"
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" error '%s' (actual errors: %s)" %
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(field, form, i, err,
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repr(field_errors)))
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elif field in context[form].fields:
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self.fail("The field '%s' on form '%s' in context %d"
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" contains no errors" % (field, form, i))
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else:
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self.fail("The form '%s' in context %d does not"
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" contain the field '%s'" %
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(form, i, field))
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else:
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non_field_errors = context[form].non_field_errors()
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self.failUnless(err in non_field_errors,
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"The form '%s' in context %d does not contain the"
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" non-field error '%s' (actual errors: %s)" %
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(form, i, err, non_field_errors))
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if not found_form:
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self.fail("The form '%s' was not used to render the response" %
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form)
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def assertTemplateUsed(self, response, template_name):
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"""
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Asserts that the template with the provided name was used in rendering
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the response.
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"""
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template_names = [t.name for t in to_list(response.template)]
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if not template_names:
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self.fail('No templates used to render the response')
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self.failUnless(template_name in template_names,
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(u"Template '%s' was not a template used to render the response."
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u" Actual template(s) used: %s") % (template_name,
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u', '.join(template_names)))
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def assertTemplateNotUsed(self, response, template_name):
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"""
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Asserts that the template with the provided name was NOT used in
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rendering the response.
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"""
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template_names = [t.name for t in to_list(response.template)]
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self.failIf(template_name in template_names,
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(u"Template '%s' was used unexpectedly in rendering the"
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u" response") % template_name)
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