MDL-67673 phpunit: Introduce a new, lightweight phpunit_dataset
In charge of taking over the, now removed/archived, phpunit/dbunit
package. It supports loading of CSV/XML files and strings and
PHP arrays, allowing to send the loaded information to database.
Perform some basic controls about the consistency of information,
surely not super-exhaustive but fair enough.
100% covered with unit test.
Planned like an "interim" replacement for phpunit/dbunit uses in
core that, ideally, should be moved to generators stuff at some
point.
Note, expect a few tests in core to fail with this commit, I've
changed some fixtures around. Next commit will fix existing uses.
Originally MDL-64600
19 files changed: