149 lines
3.5 KiB
Go
149 lines
3.5 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors All rights reserved.
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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 network
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import (
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"strings"
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"testing"
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"time"
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"github.com/juju/mutex/v2"
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)
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func TestFreeSubnet(t *testing.T) {
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reserveSubnet = func(subnet string, period time.Duration) (mutex.Releaser, error) { return nil, nil }
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t.Run("NoRetriesSuccess", func(t *testing.T) {
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startingSubnet := "192.168.0.0"
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subnet, err := FreeSubnet(startingSubnet, 0, 1)
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if err != nil {
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t.Fatal(err)
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}
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expectedIP := startingSubnet
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if subnet.IP != expectedIP {
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t.Errorf("expected IP = %q; got = %q", expectedIP, subnet.IP)
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}
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})
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t.Run("FirstSubnetTaken", func(t *testing.T) {
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count := 0
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originalIsSubnetTaken := isSubnetTaken
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defer func() {
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isSubnetTaken = originalIsSubnetTaken
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}()
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isSubnetTaken = func(subnet string) (bool, error) {
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count++
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return count == 1, nil
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}
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startingSubnet := "192.168.0.0"
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subnet, err := FreeSubnet(startingSubnet, 9, 2)
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if err != nil {
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t.Fatal(err)
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}
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expectedIP := "192.168.9.0"
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if subnet.IP != expectedIP {
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t.Errorf("expected IP = %q; got = %q", expectedIP, subnet.IP)
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}
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})
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t.Run("FirstSubnetIPV6NetworkFound", func(t *testing.T) {
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count := 0
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originalInspect := inspect
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defer func() {
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inspect = originalInspect
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}()
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inspect = func(addr string) (*Parameters, error) {
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count++
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p := &Parameters{IP: addr, IsPrivate: true}
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if count == 1 {
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p.IP = "0.0.0.0"
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p.IsPrivate = false
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}
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return p, nil
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}
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startingSubnet := "10.0.0.0"
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subnet, err := FreeSubnet(startingSubnet, 9, 2)
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if err != nil {
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t.Fatal(err)
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}
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expectedIP := "10.9.0.0"
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if subnet.IP != expectedIP {
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t.Errorf("expepcted IP = %q; got = %q", expectedIP, subnet.IP)
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}
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})
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t.Run("NonPrivateSubnet", func(t *testing.T) {
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startingSubnet := "192.167.0.0"
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_, err := FreeSubnet(startingSubnet, 9, 1)
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if err == nil {
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t.Fatalf("expected to fail since IP non-private but no error thrown")
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}
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if !strings.Contains(err.Error(), startingSubnet) {
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t.Errorf("expected starting subnet of %q to be included in error, but intead got: %v", startingSubnet, err)
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}
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})
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}
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func TestParseAddr(t *testing.T) {
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t.Run("ValidIP", func(t *testing.T) {
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addr := "192.168.9.0"
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ip, _, err := ParseAddr(addr)
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if err != nil {
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t.Fatal(err)
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}
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if ip.String() != addr {
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t.Errorf("expected IP = %q; got = %q", addr, ip.String())
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}
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})
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t.Run("ValidCIDR", func(t *testing.T) {
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addr := "192.168.9.0/30"
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ip, cidr, err := ParseAddr(addr)
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if err != nil {
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t.Fatal(err)
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}
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expected := "192.168.9.0"
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if ip.String() != expected {
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t.Errorf("expected IP = %q; got = %q", expected, ip.String())
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}
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mask, _ := cidr.Mask.Size()
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expectedMask := 30
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if mask != expectedMask {
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t.Errorf("expected mask = %q; got = %q", mask, expectedMask)
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}
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})
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t.Run("InvalidAddr", func(t *testing.T) {
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tests := []string{
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"192.168.9",
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"192.168.9.0/30000",
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}
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for _, test := range tests {
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_, _, err := ParseAddr(test)
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if err == nil {
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t.Fatalf("expected to fail since address is invalid")
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}
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}
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})
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}
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