This is a testharness.js-based test.
FAIL Slots fallback: Basic. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Basic, elements only. n.s1.assignedElements is not a function
FAIL Slots fallback: Slots in Slots. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Slots in Slots, elements only. n.s1.assignedElements is not a function
FAIL Slots fallback: Fallback contents should not be used if a node is assigned. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Slots in Slots: Assigned nodes should be used as fallback contents of another slot assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Complex case. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Complex case, elements only. n.s1.assignedElements is not a function
FAIL Slots fallback: Mutation. Append fallback contents. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Mutation. Remove fallback contents. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Mutation. Assign a node to a slot so that fallback contens are no longer used. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Mutation. Remove an assigned node from a slot so that fallback contens will be used. assert_array_equals: lengths differ, expected 1 got 0
FAIL Slots fallback: Mutation.  Remove a slot which is a fallback content of another slot. assert_array_equals: lengths differ, expected 1 got 0
Harness: the test ran to completion.

