testValues := []string{"100m", "1Gi"}
	zero := MustParse("0")
	for _, testValue := range testValues {
		value := MustParse(testValue)
		v1 := value.DeepCopy()
		// ensure non-zero - zero = non-zero (suffix preserved)
		v1.Sub(zero)
		// ensure we preserved the input value
		if v1.String() != testValue {
			t.Errorf("Expected %v, actual %v", testValue, v1.String())
		}