//-------------------------------------------------------------------------
 public virtual void test_mutateByAddition_byConstant()
 {
     double[] testArray = ARRAY_1_2.Clone();
     DoubleArrayMath.mutateByAddition(testArray, 2d);
     assertThat(testArray).contains(3d, 4d);
 }
 public virtual void test_mutateByAddition_byArray()
 {
     double[] testArray = ARRAY_1_2.Clone();
     DoubleArrayMath.mutateByAddition(testArray, new double[] { 2d, 3d });
     assertThat(testArray).contains(3d, 5d);
 }
 public virtual void test_mutateByAddition_byArray_sizeDifferent()
 {
     double[] testArray = ARRAY_1_2.Clone();
     assertThrowsIllegalArg(() => DoubleArrayMath.mutateByAddition(testArray, new double[] { 2d }));
 }