atoum 3.x requires PHP >= 5.6.0.

If you want to get coverage reports or use step-by-step debugging, you must use xDebug >= 2.3.0.

atoum 2.x supported PHP >= 5.3.3. Because on lower version $this in closures was not bound to the current object context, some assertions provided the test as an argument to closures.

This is not the case anymore.

atoum 2.x:

$this
    ->when(function(atoum\test $test) { 
        $test->testedInstance->doSomething();
    })
;  

atoum 3.x:

$this
    ->when(function() { 
        $this->testedInstance->doSomething();
    })
;  

atoum 2.x:

$this
    ->exception(function(atoum\test $test) { 
        $test->testedInstance->doSomethingAndThrow();
    })
;    

atoum 3.x:

$this
    ->exception(function() { 
        $this->testedInstance->doSomethingAndThrow();
    })
;    

Some reports have been moved to a dedicated extension: atoum/reports-extension.

If you are using one of those reports, consider using the extension or simply remove them as they are not part of atoum anymore:

• atoum\reports\realtime\nyancat
• atoum\reports\realtime\santa

You will only have to install the atoum/reports-extension and everything should work fine as the report classes have the exact same FQCN.