While this change is not 100% required now, it's good habit
and we are checking for it since Moodle 4.4.
All the changes in this commit have been applied automatically
using the moodle.PHPUnit.TestReturnType sniff and are, exclusively
adding the ": void" return types when missing.
All events_test, external_test and search_test classes:
- Namespaced with component[\level2-API]
- Moved to level2-API subdirectory when required.
- Fixed incorrect use statements with leading backslash.
- Changed code to point to global scope when needed.
- Fix some relative paths and comments here and there.
- All them passing individually.
- Complete runs passing too.
Special mention to lib/external/tests/external_test.php:
- external is not a valid component
- hence, its only valid namespace is "core"
- also, it's testing lib/external/externallib.php
- hence, the file (and class) have been renamed to external_externallib_test.php
(to avoid conflicts with other external_test that may exist in core)
Andrew Nicols