Hi, I have tried to run some tests but am stuck with the following error message when trying to run dev/tests/SapphireTest

I've found the required files in the filesystem and tried to move them...what brings up another errormessage, so I switched them back again and wrote this post.

Another issue: When running dev/tests/all I only receive a list of tests, but nothing that indicates a failures or success.

And last thing: when calling /dev/tests/coverage - is this page left blank intentionally?

I'm running this stuff on SS 2.4.3, Ubuntu with PHPUnit 3.4.5 installed. Any hints are welcome

[User Error] TestRunner::only(): Invalid TestCase 'SapphireTest', cannot find matching class

Sounds like you're trying to run the SapphireTest? That itself is not a test so you have to give it either a test case, module name or all.

running /dev/tests/all should run all the tests and /dev/tests/ should show the list of all the tests. Make sure that page isn't just loading. If it doesn't work in a browser try using sake.

Running the full test suite can take a while on some databases (I'm sitting at ~5 mins for full suite on mysql). One trick we employ is using SQLite3 when running tests which reduces it massively see https://github.com/chillu/silverstripe-doc-restructuring/blob/master/master/sapphire/docs/en/howto/phpunit-configuration.md

Try checking out your php error log, something could be segfaulting or another possible issue is if you have a loose die lying around in your code or some config files. Seen people if if(!$var) die(); and $var may not exist when running tests. Hopefully you get an error message to start off with.