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Fix incorrect range transform in nextUInt/nextULong with range parameter

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#KT-25570
This commit is contained in:
Ilya Gorbunov
2018-08-27 03:40:31 +03:00
parent 583c66a2a7
commit 9c412ba436
2 changed files with 4 additions and 2 deletions
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libraries/stdlib/src/kotlin/random/Random.kt
+2 -2
View File
@@ -374,7 +374,7 @@ public fun Random.nextUInt(origin: UInt, bound: UInt): UInt {
public fun Random.nextUInt(range: UIntRange): UInt = when {
range.isEmpty() -> throw IllegalArgumentException("Cannot get random in empty range: $range")
range.last < UInt.MAX_VALUE -> nextUInt(range.first, range.last + 1u)
range.first > UInt.MIN_VALUE -> nextUInt(range.first, range.last + 1u)
range.first > UInt.MIN_VALUE -> nextUInt(range.first - 1u, range.last) + 1u
else -> nextUInt()
}
@@ -430,7 +430,7 @@ public fun Random.nextULong(origin: ULong, bound: ULong): ULong {
public fun Random.nextULong(range: ULongRange): ULong = when {
range.isEmpty() -> throw IllegalArgumentException("Cannot get random in empty range: $range")
range.last < ULong.MAX_VALUE -> nextULong(range.first, range.last + 1u)
range.first > ULong.MIN_VALUE -> nextULong(range.first, range.last + 1u)
range.first > ULong.MIN_VALUE -> nextULong(range.first - 1u, range.last) + 1u
else -> nextULong()
}
libraries/stdlib/test/random/RandomTest.kt
+2
View File
@@ -180,6 +180,7 @@ abstract class RandomSmokeTest {
(1u..5u),
(0u..31u),
(0u..UInt.MAX_VALUE - 1u),
(1u..UInt.MAX_VALUE),
(0u..UInt.MAX_VALUE)
)) {
repeat(1000) {
@@ -338,6 +339,7 @@ abstract class RandomSmokeTest {
(1uL..5uL),
(0uL..31uL),
(0uL..(ULong.MAX_VALUE - 1uL)),
(1uL..ULong.MAX_VALUE),
(0uL..ULong.MAX_VALUE)
)) {
repeat(1000) {