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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/nodeipam/ipam/cidrset"
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"k8s.io/kubernetes/pkg/controller/nodeipam/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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