Kotlin + JUnit

gistfile1.kt

package hhh.csp

import org.junit.*
import org.junit.rules.ExpectedException
import junit.framework.TestCase
import junit.framework.TestSuite

public class IntervalTest(name :String) : TestCase(name) {

    fun testIntervalPlus() {
        val values : Array<Interval> = Array(10000,{Interval.zero()});
        var v:Interval = Interval.zero();
        for( i in values ) i.u = 1.0;
        for ( i in values) v = v+i;
        println(v);
    }
}

class Interval(var l : Double, var u : Double)  {
    class object {
        inline fun zero() = Interval(0.0, 0.0)
    }

    inline fun clone() = Interval(l,u)

    // should be implemented manually
    fun plusAssign(other : Interval) {
        l += other.l;
        u += other.u;
    }

    // should be implemented automatically
    fun plus(other : Interval):Interval {
        val v = this.clone()
        v.plusAssign(other)
        return v
    }

    inline fun toString() = "[${l}，${u}]";

    public fun main(args: Array<String> ) {
        val values : Array<Interval> = Array<Interval>(10000,{Interval.zero()});
        var v:Interval = Interval.zero() + Interval(-1.0,1.0);
        for( i in values ) i.u = 1.0;
        for ( i in values) v = v + i;
        println(v);
    }
}