I noticed, but I'm also trying to assert that it's an Array. I checked into assertPropertyEmpty but it doesn't assume array. I'm not sure what's best to use here, since using assertInstanceOf('array', $value) would still require me to fill $value.

I think it will be useful in other occasion, though. For what I've seen assertPropertyTrue/False/Null would be useful to have in LunrBaseTest, but missing.

assertArrayEmpty($this->get_reflection_property_value('property'));

is what I usually do in those situations.

I'm not opposed to adding other helper methods to LunrBaseTest. For now I haven't seen the need though to do it myself. Patches welcome :)

Ok, since there is no much difference in saving it in $value and pass it to the assertion from what you'd do, I think this one should go in without further changes.
If I add such helper methods, the others "tests refactoring" tasks will be updated accordingly.
I will add one commit to the right codereviews when the change in LunrBaseTest is made.

wfm