zero := resource.MustParse("0")
	for _, v := range a {
		if v.Cmp(zero) != 0 {
			return false
		}
	}
	return true
}

// RemoveZeros returns a new resource list that only has no zero values
func RemoveZeros(a corev1.ResourceList) corev1.ResourceList {
	result := corev1.ResourceList{}
	for key, value := range a {
		if !value.IsZero() {
			result[key] = value
		}
	}

				corev1.ResourceCPU:    resource.MustParse("200m"),
				corev1.ResourceMemory: resource.MustParse("1Gi"),
			},
		},
	}
	for testName, testCase := range testCases {
		if result := RemoveZeros(testCase.a); !Equals(result, testCase.expected) {
			t.Errorf("%s expected: %v, actual: %v", testName, testCase.expected, result)
		}
	}
}

func TestIsNegative(t *testing.T) {

				return quotas, innerErr
			}
			deltaUsage = quota.SubtractWithNonNegativeResult(deltaUsage, prevUsage)
		}
	}

	// ignore items in deltaUsage with zero usage
	deltaUsage = quota.RemoveZeros(deltaUsage)
	// if there is no remaining non-zero usage, short-circuit and return
	if len(deltaUsage) == 0 {
		return quotas, nil
	}

	// verify that for every resource that had limited by default consumption