// key is index of the cidr allocated
	expectedAllocatedCIDR map[int]string
	allocatedCIDRs        map[int][]string
	// should controller creation fail?
	ctrlCreateFail bool
}

func TestOccupyPreExistingCIDR(t *testing.T) {
	// all tests operate on a single node
	testCases := []testCase{
		{
			description: "success, single stack no node allocation",
			fakeNodeHandler: &testutil.FakeNodeHandler{