Created
January 3, 2015 00:30
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it should "do round-trip" in { | |
forAll(initialBoardAndChangesGenerator) { | |
case InitialBoardAndChanges(initialBoard, changes) => | |
lazy val boardAndEventsStream: Stream[(BoardState, Seq[TaskEvent])] = | |
(initialBoard, Nil) #:: | |
(boardAndEventsStream zip changes).map { | |
case ((prevBoard, events), changedBoard) => | |
val newAddedEvents = prevBoard.diff(changedBoard) | |
(changedBoard, newAddedEvents) | |
} | |
boardAndEventsStream.drop(1).foldLeft(initialBoard) { | |
case (prevBoard, (boardAfterGeneratedChanges, events)) => | |
val boardAfterEventsAccumulation = events.foldLeft(prevBoard) { (board, event) => | |
board.plus(event) | |
} | |
withMoreReadeableClue(prevBoard, events, boardAfterGeneratedChanges, boardAfterEventsAccumulation) { | |
boardAfterEventsAccumulation shouldEqual boardAfterGeneratedChanges | |
} | |
boardAfterEventsAccumulation | |
} | |
} | |
} |
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