ef8936ce6a
for IPv6, NewCIDRSet was updated to return an error if the subnet mask size is too big. In this case, NewCIDRSet will fail and return an error.
68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ipam
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import (
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"net"
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"testing"
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"k8s.io/kubernetes/pkg/controller/node/ipam/cidrset"
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"k8s.io/kubernetes/pkg/controller/node/ipam/test"
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)
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func TestOccupyServiceCIDR(t *testing.T) {
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const clusterCIDR = "10.1.0.0/16"
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TestCase:
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for _, tc := range []struct {
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serviceCIDR string
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}{
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{"10.0.255.0/24"},
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{"10.1.0.0/24"},
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{"10.1.255.0/24"},
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{"10.2.0.0/24"},
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} {
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serviceCIDR := test.MustParseCIDR(tc.serviceCIDR)
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set, err := cidrset.NewCIDRSet(test.MustParseCIDR(clusterCIDR), 24)
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if err != nil {
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t.Errorf("test case %+v: NewCIDRSet() = %v, want nil", tc, err)
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}
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if err := occupyServiceCIDR(set, test.MustParseCIDR(clusterCIDR), serviceCIDR); err != nil {
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t.Errorf("test case %+v: occupyServiceCIDR() = %v, want nil", tc, err)
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}
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// Allocate until full.
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var cidrs []*net.IPNet
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for {
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cidr, err := set.AllocateNext()
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if err != nil {
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if err == cidrset.ErrCIDRRangeNoCIDRsRemaining {
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break
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}
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t.Errorf("set.AllocateNext() = %v, want %v", err, cidrset.ErrCIDRRangeNoCIDRsRemaining)
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continue TestCase
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}
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cidrs = append(cidrs, cidr)
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}
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// No allocated CIDR range should intersect with serviceCIDR.
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for _, c := range cidrs {
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if c.Contains(serviceCIDR.IP) || serviceCIDR.Contains(c.IP) {
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t.Errorf("test case %+v: allocated CIDR %v from service range", tc, c)
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}
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}
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}
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}
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