BackdropTestCase::errorHandler in core/modules/simpletest/backdrop_web_test_case.php

Handle errors during test runs.

BackdropTestCase::exceptionHandler in core/modules/simpletest/backdrop_web_test_case.php

Handle exceptions.

BackdropTestCase::verbose in core/modules/simpletest/backdrop_web_test_case.php

Logs a verbose message in a text file.

CommonSimpleTestErrorCollectorTestCase::error in core/modules/simpletest/tests/common.test

Error handler that collects errors in an array.

CommonSimpleTestErrorCollectorTestCase::testErrorCollect in core/modules/simpletest/tests/common.test

Test that simpletest collects errors from the tested site.

UnicodeUnitTest::testMbStringUnicode in core/modules/simpletest/tests/unicode.test

Test full unicode features implemented using the mbstring extension.