id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
2988	Many test mixins fail to supercall implementations of hook methods	exarkun	GitHub <noreply@…>	"For example, `GridTestMixin.setUp` does not supercall.  This means you get a kind of random outcome if you happen to mix this in and override `setUp`.

Ultimately all these mixins should be eliminated.  They're a complicated and therefore error-prone way to share functionality.  But in the short term, fix them to at least do the correct supercalls."	defect	closed	normal	undecided	unknown	1.12.1	fixed	review-needed