1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
import scala.collection.mutable
import scala.language.{ reflectiveCalls }
object Test extends App {
def last0(ml: mutable.MutableList[Int]) =
ml.asInstanceOf[{def last0: mutable.LinkedList[Int]}].last0
def first0(ml: mutable.MutableList[Int]) =
ml.asInstanceOf[{def first0: mutable.LinkedList[Int]}].first0
val f = mutable.Queue[Int]()
def check(desc: String) {
assert(f.length == 0, s"$desc: non empty: $f")
assert(last0(f).isEmpty, s"$desc: last0 leak: ${last0(f)}")
assert(first0(f).isEmpty, s"$desc: first0 leak: ${last0(f)}")
}
f.enqueue(1)
f.dequeue()
check("dequeue 1")
f.enqueue(1)
f.enqueue(2)
f.dequeue()
assert(last0(f).toList == List(2), last0(f))
f.dequeue()
check("dequeue 2")
f.enqueue(1)
f.dequeueAll(_ => false)
f.dequeueAll(_ => true)
check("dequeueAll")
f.enqueue(1)
f.dequeueFirst(_ => true)
check("dequeueFirst")
{
f.enqueue(1)
val tail = f.tail
assert(last0(tail).isEmpty, last0(tail))
assert(first0(tail).isEmpty, first0(tail))
}
{
val ml = mutable.MutableList[Int]()
1 +=: ml
val tail = ml.tail
assert(last0(tail).isEmpty, last0(tail))
assert(first0(tail).isEmpty, first0(tail))
}
{
val ml = mutable.MutableList[Int]()
1 +=: ml
ml += 2
val tail = ml.tail
assert(last0(tail).toList == List(2), last0(tail))
assert(first0(tail) == last0(tail).toList, first0(tail))
assert(last0(tail.tail).toList == Nil, last0(tail.tail).toList)
assert(first0(tail.tail) == Nil, first0(tail.tail))
}
}
|
