}
	for _, tc := range cases {
		t.Run(tc.description, func(t *testing.T) {
			_, clusterCIDR, _ := netutils.ParseCIDRSloppy(tc.clusterCIDRStr)
			a, err := NewCIDRSet(clusterCIDR, tc.subNetMaskSize)
			if gotErr := err != nil; gotErr != tc.expectErr {
				t.Fatalf("NewCIDRSet(%v, %v) = %v, %v; gotErr = %t, want %t", clusterCIDR, tc.subNetMaskSize, a, err, gotErr, tc.expectErr)
			}
			if a == nil {
				return
			}

	// cidrSet are mapped to clusterCIDR by index
	cidrSets := make([]*cidrset.CidrSet, len(allocatorParams.ClusterCIDRs))
	for idx, cidr := range allocatorParams.ClusterCIDRs {
		cidrSet, err := cidrset.NewCIDRSet(cidr, allocatorParams.NodeCIDRMaskSizes[idx])
		if err != nil {
			return nil, err
		}
		cidrSets[idx] = cidrSet
	}

	ra := &rangeAllocator{
		client:       client,