This is a testharness.js-based test.
PASS Checking place-items: normal 
PASS Checking place-items: normal auto 
FAIL Checking place-items: normal normal assert_equals: place-items specified value expected "normal" but got "normal normal"
PASS Checking place-items: normal stretch 
PASS Checking place-items: normal start 
PASS Checking place-items: normal end 
PASS Checking place-items: normal self-start 
PASS Checking place-items: normal self-end 
PASS Checking place-items: normal left 
PASS Checking place-items: normal right 
PASS Checking place-items: normal center 
PASS Checking place-items: normal flex-start 
PASS Checking place-items: normal flex-end 
PASS Checking place-items: normal baseline 
PASS Checking place-items: normal first baseline 
PASS Checking place-items: normal last baseline 
PASS Checking place-items: stretch 
PASS Checking place-items: stretch auto 
PASS Checking place-items: stretch normal 
FAIL Checking place-items: stretch stretch assert_equals: place-items specified value expected "stretch" but got "stretch stretch"
PASS Checking place-items: stretch start 
PASS Checking place-items: stretch end 
PASS Checking place-items: stretch self-start 
PASS Checking place-items: stretch self-end 
PASS Checking place-items: stretch left 
PASS Checking place-items: stretch right 
PASS Checking place-items: stretch center 
PASS Checking place-items: stretch flex-start 
PASS Checking place-items: stretch flex-end 
PASS Checking place-items: stretch baseline 
PASS Checking place-items: stretch first baseline 
PASS Checking place-items: stretch last baseline 
PASS Checking place-items: start 
PASS Checking place-items: start auto 
PASS Checking place-items: start normal 
PASS Checking place-items: start stretch 
FAIL Checking place-items: start start assert_equals: place-items specified value expected "start" but got "start start"
PASS Checking place-items: start end 
PASS Checking place-items: start self-start 
PASS Checking place-items: start self-end 
PASS Checking place-items: start left 
PASS Checking place-items: start right 
PASS Checking place-items: start center 
PASS Checking place-items: start flex-start 
PASS Checking place-items: start flex-end 
PASS Checking place-items: start baseline 
PASS Checking place-items: start first baseline 
PASS Checking place-items: start last baseline 
PASS Checking place-items: end 
PASS Checking place-items: end auto 
PASS Checking place-items: end normal 
PASS Checking place-items: end stretch 
PASS Checking place-items: end start 
FAIL Checking place-items: end end assert_equals: place-items specified value expected "end" but got "end end"
PASS Checking place-items: end self-start 
PASS Checking place-items: end self-end 
PASS Checking place-items: end left 
PASS Checking place-items: end right 
PASS Checking place-items: end center 
PASS Checking place-items: end flex-start 
PASS Checking place-items: end flex-end 
PASS Checking place-items: end baseline 
PASS Checking place-items: end first baseline 
PASS Checking place-items: end last baseline 
PASS Checking place-items: self-start 
PASS Checking place-items: self-start auto 
PASS Checking place-items: self-start normal 
PASS Checking place-items: self-start stretch 
PASS Checking place-items: self-start start 
PASS Checking place-items: self-start end 
FAIL Checking place-items: self-start self-start assert_equals: place-items specified value expected "self-start" but got "self-start self-start"
PASS Checking place-items: self-start self-end 
PASS Checking place-items: self-start left 
PASS Checking place-items: self-start right 
PASS Checking place-items: self-start center 
PASS Checking place-items: self-start flex-start 
PASS Checking place-items: self-start flex-end 
PASS Checking place-items: self-start baseline 
PASS Checking place-items: self-start first baseline 
PASS Checking place-items: self-start last baseline 
PASS Checking place-items: self-end 
PASS Checking place-items: self-end auto 
PASS Checking place-items: self-end normal 
PASS Checking place-items: self-end stretch 
PASS Checking place-items: self-end start 
PASS Checking place-items: self-end end 
PASS Checking place-items: self-end self-start 
FAIL Checking place-items: self-end self-end assert_equals: place-items specified value expected "self-end" but got "self-end self-end"
PASS Checking place-items: self-end left 
PASS Checking place-items: self-end right 
PASS Checking place-items: self-end center 
PASS Checking place-items: self-end flex-start 
PASS Checking place-items: self-end flex-end 
PASS Checking place-items: self-end baseline 
PASS Checking place-items: self-end first baseline 
PASS Checking place-items: self-end last baseline 
PASS Checking place-items: left 
PASS Checking place-items: left auto 
PASS Checking place-items: left normal 
PASS Checking place-items: left stretch 
PASS Checking place-items: left start 
PASS Checking place-items: left end 
PASS Checking place-items: left self-start 
PASS Checking place-items: left self-end 
FAIL Checking place-items: left left assert_equals: place-items specified value expected "left" but got "left left"
PASS Checking place-items: left right 
PASS Checking place-items: left center 
PASS Checking place-items: left flex-start 
PASS Checking place-items: left flex-end 
PASS Checking place-items: left baseline 
PASS Checking place-items: left first baseline 
PASS Checking place-items: left last baseline 
PASS Checking place-items: right 
PASS Checking place-items: right auto 
PASS Checking place-items: right normal 
PASS Checking place-items: right stretch 
PASS Checking place-items: right start 
PASS Checking place-items: right end 
PASS Checking place-items: right self-start 
PASS Checking place-items: right self-end 
PASS Checking place-items: right left 
FAIL Checking place-items: right right assert_equals: place-items specified value expected "right" but got "right right"
PASS Checking place-items: right center 
PASS Checking place-items: right flex-start 
PASS Checking place-items: right flex-end 
PASS Checking place-items: right baseline 
PASS Checking place-items: right first baseline 
PASS Checking place-items: right last baseline 
PASS Checking place-items: center 
PASS Checking place-items: center auto 
PASS Checking place-items: center normal 
PASS Checking place-items: center stretch 
PASS Checking place-items: center start 
PASS Checking place-items: center end 
PASS Checking place-items: center self-start 
PASS Checking place-items: center self-end 
PASS Checking place-items: center left 
PASS Checking place-items: center right 
FAIL Checking place-items: center center assert_equals: place-items specified value expected "center" but got "center center"
PASS Checking place-items: center flex-start 
PASS Checking place-items: center flex-end 
PASS Checking place-items: center baseline 
PASS Checking place-items: center first baseline 
PASS Checking place-items: center last baseline 
PASS Checking place-items: flex-start 
PASS Checking place-items: flex-start auto 
PASS Checking place-items: flex-start normal 
PASS Checking place-items: flex-start stretch 
PASS Checking place-items: flex-start start 
PASS Checking place-items: flex-start end 
PASS Checking place-items: flex-start self-start 
PASS Checking place-items: flex-start self-end 
PASS Checking place-items: flex-start left 
PASS Checking place-items: flex-start right 
PASS Checking place-items: flex-start center 
FAIL Checking place-items: flex-start flex-start assert_equals: place-items specified value expected "flex-start" but got "flex-start flex-start"
PASS Checking place-items: flex-start flex-end 
PASS Checking place-items: flex-start baseline 
PASS Checking place-items: flex-start first baseline 
PASS Checking place-items: flex-start last baseline 
PASS Checking place-items: flex-end 
PASS Checking place-items: flex-end auto 
PASS Checking place-items: flex-end normal 
PASS Checking place-items: flex-end stretch 
PASS Checking place-items: flex-end start 
PASS Checking place-items: flex-end end 
PASS Checking place-items: flex-end self-start 
PASS Checking place-items: flex-end self-end 
PASS Checking place-items: flex-end left 
PASS Checking place-items: flex-end right 
PASS Checking place-items: flex-end center 
PASS Checking place-items: flex-end flex-start 
FAIL Checking place-items: flex-end flex-end assert_equals: place-items specified value expected "flex-end" but got "flex-end flex-end"
PASS Checking place-items: flex-end baseline 
PASS Checking place-items: flex-end first baseline 
PASS Checking place-items: flex-end last baseline 
PASS Checking place-items: baseline 
PASS Checking place-items: baseline auto 
PASS Checking place-items: baseline normal 
PASS Checking place-items: baseline stretch 
PASS Checking place-items: baseline start 
PASS Checking place-items: baseline end 
PASS Checking place-items: baseline self-start 
PASS Checking place-items: baseline self-end 
PASS Checking place-items: baseline left 
PASS Checking place-items: baseline right 
PASS Checking place-items: baseline center 
PASS Checking place-items: baseline flex-start 
PASS Checking place-items: baseline flex-end 
FAIL Checking place-items: baseline baseline assert_equals: place-items specified value expected "baseline" but got "baseline baseline"
PASS Checking place-items: baseline first baseline 
PASS Checking place-items: baseline last baseline 
PASS Checking place-items: first baseline 
PASS Checking place-items: first baseline auto 
PASS Checking place-items: first baseline normal 
PASS Checking place-items: first baseline stretch 
PASS Checking place-items: first baseline start 
PASS Checking place-items: first baseline end 
PASS Checking place-items: first baseline self-start 
PASS Checking place-items: first baseline self-end 
PASS Checking place-items: first baseline left 
PASS Checking place-items: first baseline right 
PASS Checking place-items: first baseline center 
PASS Checking place-items: first baseline flex-start 
PASS Checking place-items: first baseline flex-end 
PASS Checking place-items: first baseline baseline 
FAIL Checking place-items: first baseline first baseline assert_equals: place-items specified value expected "first baseline" but got "first baseline first baseline"
PASS Checking place-items: first baseline last baseline 
PASS Checking place-items: last baseline 
PASS Checking place-items: last baseline auto 
PASS Checking place-items: last baseline normal 
PASS Checking place-items: last baseline stretch 
PASS Checking place-items: last baseline start 
PASS Checking place-items: last baseline end 
PASS Checking place-items: last baseline self-start 
PASS Checking place-items: last baseline self-end 
PASS Checking place-items: last baseline left 
PASS Checking place-items: last baseline right 
PASS Checking place-items: last baseline center 
PASS Checking place-items: last baseline flex-start 
PASS Checking place-items: last baseline flex-end 
PASS Checking place-items: last baseline baseline 
PASS Checking place-items: last baseline first baseline 
FAIL Checking place-items: last baseline last baseline assert_equals: place-items specified value expected "last baseline" but got "last baseline last baseline"
Harness: the test ran to completion.

