Update all unit-test with @covers annotation, add custom recordedOn test for AggregateChanged, use assertSame where possible, update infection config & badge

[DanielBadura]

fix #160

[DanielBadura]

Not sure what psalm wants here:

ERROR: DocblockTypeContradiction - tests/Unit/Aggregate/AggregateRootTest.php:63:15 - Docblock-defined type 1 for $profile->playhead() is never int(2) (see https://psalm.dev/155)
        self::assertSame(2, $profile->playhead());

[DavidBadura]

Not sure what psalm wants here:

ERROR: DocblockTypeContradiction - tests/Unit/Aggregate/AggregateRootTest.php:63:15 - Docblock-defined type 1 for $profile->playhead() is never int(2) (see https://psalm.dev/155)
        self::assertSame(2, $profile->playhead());

I don't know, maybe we should add this in the psalm baseline

[DanielBadura]

Maybe because playhead is readonly and already resutled in 1? I want to check it one more time before adding it to the baseline

[DavidBadura]

on the aggregate, playhead is internal not readonly. on the aggregateChange it is readonly, but this is not used here.