Unit Testing

[hashmich]

Yet, no tests have been set up at all.
Investigation on appropriate framework starts now.

[hashmich]

Building upon phpUnit 3.7.38 as the testing framework, as compatibility already given in the cakePhp framework.
Setting up the environment required creating a fork of the test framework, which fixes errors not being thrown from prior php versions: https://github.com/hashmich/phpUnit

[hashmich]

When running tests on CLI, it might complain about the missing MySql driver. Php CLI is apart from the php running on Apache and possibly using a different php version, thus running tests in the browser can give different results.
This issue can be resolved by reinstalling php-mysql (use correct php CLI version, eg. php7.2-mysql)

[hashmich]

Test coverage in parts has been achieved for DHRC-Core in API development.