chango.git/tests/test_utils, branch devmain

Fixed #35514 -- Implemented dictionary-based MAILERS.

2026-05-13T21:00:56Z

See DEP 0018. Added: * MAILERS setting. * django.core.mail.mailers dict-like EmailBackend factory. * `using` argument to mail sending APIs. * `sent_using` attribute to mail.outbox messages in locmem backend. * MAILERS in startproject settings template, set to console backend. * AdminLogHandler.using argument. * BrokenLinkEmailsMiddleware.send_mail() method. Updated: * BaseEmailBackend to track the MAILERS alias used to construct it, and to report errors for unknown kwargs (OPTIONS). * EmailBackend implementations to initialize from kwargs (OPTIONS) only when MAILERS is being used. * smtp.EmailBackend to require `host` option and to default `port` option based on SSL/TLS options. * SimpleTestCase setup to substitute the locmem backend for all defined MAILERS configurations. * Django's tests that send mail to define MAILERS. Deprecated: * EMAIL_BACKEND and other backend-related EMAIL_* settings. * mail.get_connection(). * The `connection`, `fail_silently`, `auth_user`, and `auth_password` arguments to mail functions. * The EmailMessage.connection attribute. * BaseEmailBackend support for `fail_silently`. Backends that support fail_silently (SMTP, console, file) now implement it directly. * AdminEmailHandler.email_backend argument. Removed undocumented features without deprecation: * EmailMessage.get_connection() method. (send() now raises an error if a subclass has attempted to override it.) * EmailMessage.send() no longer sets self.connection to the connection used for sending. (It still _uses_ a pre-existing self.connection.) * AdminEmailHandler.connection() method. (Init now raises an error if a subclass has attempted to override it.) Thanks to Natalia Bidart for shepherding DEP 0018 and for extensive reviews and suggestions on the implementation. Thanks to Jacob Rief for the initial implementation and multiple iterations while refining the design. Co-authored-by: Jacob Rief

Refs #35514 -- Verified test runner swaps in testing email backend.

2026-05-07T01:39:16Z

Added missing test to verify Django's test runner swaps in the locmem EmailBackend during tests. Extracted reusable mock_test_state() helper from SetupTestEnvironmentTests.test_allowed_hosts().

Fixed #36859 -- Made assertContains and assertNotContains idempotent for streaming responses.

2026-03-16T20:44:40Z

Refs #36936 - Adjusted tests to set PYTHON_COLORS environment variable.

2026-02-26T13:27:33Z

When "FORCE_COLOR" was set in the environment (such as in django-docker-box) several test cases that rely on string comparisons against exception messages or command line results would fail due to ANSI escape sequences being present in the output. This change resolved the issue by setting the "PYTHON_COLORS" environment variable to "0" for those specific tests, which takes precendence over the presence of "FORCE_COLOR".

Added various missing test skips observed on MongoDB.

2026-02-10T21:06:49Z

Applied Black's 2026 stable style.

2026-01-18T20:26:56Z

https://github.com/psf/black/releases/tag/26.1.0

Fixed #36487 -- Fixed logger error message with partial callbacks.

2025-12-19T17:58:29Z

Fixed #36589 -- Made assertTemplateUsed/NotUsed track full path for PartialTemplate.

2025-09-15T20:45:13Z

Previously, assertTemplateUsed only matched partial names, ignoring the template origin. This caused assertions on partials specified by origin ("template.html#partial") to fail. Refs #36410.

Fixed test_utils.tests.HTMLEqualTests.test_parsing_errors following Python's HTMLParser fixed parsing.

2025-08-13T02:04:09Z

Further details about Python changes can be found in: https://github.com/python/cpython/commit/0243f97cbadec8d985e63b1daec5d1cbc850cae3. Thank you Clifford Gama for the thorough review!

Fixed #35728 -- Computed error messages in assertions only on test failures.

2025-07-18T08:16:59Z

Performance regression in 1dae65dc63ae84be5002c37b4ddae0b9220e8808. Thanks to Adam Johnson for the report.