
PASS slotchange event: Append a child to a host.
PASS slotchange event: Remove a child from a host.
PASS slotchange event: Remove a child before adding an event listener.
PASS slotchange event: Change slot= attribute to make it un-assigned.
PASS slotchange event: Change slot's name= attribute so that none is assigned.
PASS slotchange event: Change slot= attribute to make it assigned.
PASS slotchange event: Change slot's name= attribute so that a node is assigned to the slot.
PASS slotchange event: Change fallback content - assignedNodes still empty.
PASS slotchange event: Remove a fallback content - assignedNodes still empty.
PASS slotchange event: Add a fallback content to nested slots - assignedNodes still empty.
PASS slotchange event: Remove a fallback content from nested slots - assignedNodes still empty.
PASS slotchange event: Insert a slot before an existing slot.
PASS slotchange event: Remove a preceding slot.
PASS slotchange event: A slot is assigned to another slot.
PASS slotchange event: Slotchange should be fired if assigned nodes are changed.
PASS slotchange event: Child content is added to nested slots.