Tim Hunt 2d7cbf5923 MDL-34251 question engine: possible infinite loop loading usages ...

In the case where either a question_attempt had not steps, or a
question_usage had not question_attempts, the load_from_records methods
could get stuck in an infinite loop.

This fix ensures that does not happen, with unit tests to verify it. At
the same time, I noticed an error in the existing tests, which this
patch fixes.

2012-07-19 12:46:24 +01:00

..

datalib_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

helpers.php

MDL-33779 question: code clean-up

2012-06-15 14:02:15 +01:00

questionattempt_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionattemptiterator_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionattemptstep_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionattemptstepiterator_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionbank_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questioncbm_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionengine_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionstate_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

questionusagebyactivity_test.php

MDL-34251 question engine: possible infinite loop loading usages

2012-07-19 12:46:24 +01:00

questionutils_test.php

MDL-32323 convert question tests

2012-04-10 15:27:11 +02:00

unitofwork_test.php

MDL-32062 question engine: fixup tests that this change broke.

2012-07-04 19:24:48 +08:00