This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 1 duplicate test name: "Test the value 'initial' for positioned elements in grid containers"
PASS Test getting align-self set through CSS. 
PASS Test initial value of align-self through JS 
PASS Test getting and setting align-self through JS 
PASS Test 'auto' value resolution for the root node 
PASS Test bad combinations of align-self 
PASS Test the value 'initial' 
PASS Test the value 'initial' for grid containers 
PASS Test the value 'initial' for flex containers 
PASS Test the value 'initial' for positioned elements 
PASS Test the value 'initial' for positioned elements in grid containers 
PASS Test the value 'initial' for positioned elements in grid containers 
PASS Test the value 'inherit' 
Harness: the test ran to completion.