[backport / beta] Fix: don't clear RecordArray if remaining record does not match the removed record #8572
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…emoved record (emberjs#8570) * Update record-array-test.js * add fix --------- Co-authored-by: Chris Thoburn <runspired@gmail.com>
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resolves #8569
Previously, removing a record only checked that the record was still a member of the array if
removes.length !== state.length, this missed the case where when exactly two records exist and one is removed and the removal is double-notified the record to remove may not be the record in the array.The double-notification is something we should also investigate, it's likely that we should not notify the state change for
isDeleted, only for when the deletion is persisted. We also likely should not notify when unloadRecord is called on something whose deletion has been persisted. Both of these cases are leading the over-notification, the first for an extra add, the second for an extra remove.