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object Test {
def mkNumbers(x: Int): List[AnyRef] = {
val base = List(
BigDecimal(x),
BigInt(x),
new java.lang.Double(x.toDouble),
new java.lang.Float(x.toFloat),
new java.lang.Long(x.toLong),
new java.lang.Integer(x)
)
val extras = List(
if (x >= Short.MinValue && x <= Short.MaxValue) List(new java.lang.Short(x.toShort)) else Nil,
if (x >= Byte.MinValue && x <= Byte.MaxValue) List(new java.lang.Byte(x.toByte)) else Nil,
if (x >= Char.MinValue && x <= Char.MaxValue) List(new java.lang.Character(x.toChar)) else Nil
).flatten
base ::: extras
}
def main(args: Array[String]): Unit = {
val ints = (0 to 15).toList map (Short.MinValue >> _)
val ints2 = ints map (x => -x)
val ints3 = ints map (_ + 1)
val ints4 = ints2 map (_ - 1)
val setneg1 = ints map mkNumbers
val setneg2 = ints3 map mkNumbers
val setpos1 = ints2 map mkNumbers
val setpos2 = ints4 map mkNumbers
val zero = mkNumbers(0)
val sets = setneg1 ++ setneg2 ++ List(zero) ++ setpos1 ++ setpos2
for (set <- sets ; x <- set ; y <- set) {
println("'%s' == '%s' (%s == %s) (%s == %s)".format(x, y, x.hashCode, y.hashCode, x.##, y.##))
assert(x == y, "%s/%s != %s/%s".format(x, x.getClass, y, y.getClass))
assert(x.## == y.##, "%s != %s".format(x.getClass, y.getClass))
}
}
}
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