Fix test issue

[Ampsicora]

Error:
core_calendar\container_test::test_delete_module_delete_events Error: Class 'block_deft\janus_room' not found

This fix #67 adding a check for the class block_deft\janus_room to exists in order to prevent a failing test

[golenkovm]

Thanks for raising this @Ampsicora

I's suggest to link this PR to the issue (if it doesn't exist feel free to create it). Also could you please provide the environment details this error is happening in? You can simply copy the header from your phpunit output (there are a few lines with Moodle, db, php, phpunit versions).

I wonder what is block_deft\janus_room. Is it a method that belonds to another 3rd party plugin block_deft?

I checked https://github.com/bdecentgmbh/moodle-mod_videotime/blob/master/version.php and there are no dependencies mentioned. Are there any more references to block_deft's methods in the plugin code?

[Ampsicora]

These are the environment details:

Moodle 4.1.8+ (Build: 20240125)
Php: 7.4.33, mariadb: 10.5.23, OS: Linux 6.2.0-1017-aws x86_64
PHPUnit 9.5.28 by Sebastian Bergmann and contributors.

block_deft seems to be a relevant class since in the code various of its methods are used and has been extended by other classes

[golenkovm]

This actually sounds like a dependency issue. If there are many references to block_deft plugin then it should be set as dependant in version.php and installed along with mod_videotime