@Test
public void boxDoubleArray() {
double[] unboxed = new double[]{42.0, 42.0, 42.0};
DoubleArrayWrapper arrayWrapper = new DoubleArrayWrapper(unboxed);
Assert.assertArrayEquals(new Double[]{42D, 42D, 42D}, arrayWrapper.toArray());
}
// unboxing
@Test
public void unboxCharacterArray() {