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Diffstat (limited to 'test/files/run/hashCodeBoxesRunTime.scala')
-rw-r--r-- | test/files/run/hashCodeBoxesRunTime.scala | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/files/run/hashCodeBoxesRunTime.scala b/test/files/run/hashCodeBoxesRunTime.scala new file mode 100644 index 0000000000..3eacacb663 --- /dev/null +++ b/test/files/run/hashCodeBoxesRunTime.scala @@ -0,0 +1,28 @@ +// This only tests direct access to the methods in BoxesRunTime, +// not the whole scheme. +object Test +{ + import java.{ lang => jl } + import scala.runtime.BoxesRunTime.{ hashFromNumber, hashFromObject } + + def allSame[T](xs: List[T]) = assert(xs.removeDuplicates.size == 1, "failed: " + xs) + + def mkNumbers(x: Int): List[Number] = + List(x.toByte, x.toShort, x, x.toLong, x.toFloat, x.toDouble) + + def testLDF(x: Long) = allSame(List[Number](x, x.toDouble, x.toFloat) map hashFromNumber) + + def main(args: Array[String]): Unit = { + List(Byte.MinValue, -1, 0, 1, Byte.MaxValue) foreach { n => + val hashes = mkNumbers(n) map hashFromNumber + allSame(hashes) + if (n >= 0) { + val charCode = hashFromObject(n.toChar: Character) + assert(charCode == hashes.head) + } + } + + testLDF(Short.MaxValue.toLong) + testLDF(Short.MinValue.toLong) + } +} |