public virtual void test_mutateByMultiplication_byConstant()
 {
     double[] testArray = ARRAY_1_2.Clone();
     DoubleArrayMath.mutateByMultiplication(testArray, 4d);
     assertThat(testArray).contains(4d, 8d);
 }
 public virtual void test_mutateByMultiplication_byArray()
 {
     double[] testArray = ARRAY_1_2.Clone();
     DoubleArrayMath.mutateByMultiplication(testArray, new double[] { 4d, 5d });
     assertThat(testArray).contains(4d, 10d);
 }
 public virtual void test_mutateByMultiplication_byArray_sizeDifferent()
 {
     double[] testArray = ARRAY_1_2.Clone();
     assertThrowsIllegalArg(() => DoubleArrayMath.mutateByMultiplication(testArray, new double[] { 4d }));
 }