116 lines
2.6 KiB
Go
116 lines
2.6 KiB
Go
package util
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import (
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"net"
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"reflect"
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"testing"
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"github.com/containers/common/libnetwork/types"
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"github.com/containers/common/pkg/config"
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)
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func parseIPNet(subnet string) *types.IPNet {
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n, _ := types.ParseCIDR(subnet)
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return &n
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}
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func parseSubnet(subnet string) *types.Subnet {
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n := parseIPNet(subnet)
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return &types.Subnet{Subnet: *n}
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}
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func TestGetFreeIPv4NetworkSubnet(t *testing.T) {
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type args struct {
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usedNetworks []*net.IPNet
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subnetPools []config.SubnetPool
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}
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tests := []struct {
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name string
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args args
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want *types.Subnet
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wantErr bool
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}{
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{
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name: "single subnet pool",
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args: args{
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subnetPools: []config.SubnetPool{
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{Base: parseIPNet("10.89.0.0/16"), Size: 24},
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},
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},
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want: parseSubnet("10.89.0.0/24"),
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},
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{
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name: "single subnet pool with used nets",
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args: args{
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subnetPools: []config.SubnetPool{
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{Base: parseIPNet("10.89.0.0/16"), Size: 24},
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},
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usedNetworks: []*net.IPNet{
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parseCIDR("10.89.0.0/25"),
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},
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},
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want: parseSubnet("10.89.1.0/24"),
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},
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{
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name: "single subnet pool with no free nets",
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args: args{
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subnetPools: []config.SubnetPool{
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{Base: parseIPNet("10.89.0.0/16"), Size: 24},
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},
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usedNetworks: []*net.IPNet{
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parseCIDR("10.89.0.0/16"),
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},
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},
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wantErr: true,
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},
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{
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name: "two subnet pools",
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args: args{
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subnetPools: []config.SubnetPool{
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{Base: parseIPNet("10.89.0.0/16"), Size: 24},
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{Base: parseIPNet("10.90.0.0/16"), Size: 25},
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},
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},
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want: parseSubnet("10.89.0.0/24"),
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},
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{
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name: "two subnet pools with no free subnet in first pool",
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args: args{
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subnetPools: []config.SubnetPool{
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{Base: parseIPNet("10.89.0.0/16"), Size: 24},
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{Base: parseIPNet("10.90.0.0/16"), Size: 25},
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},
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usedNetworks: []*net.IPNet{
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parseCIDR("10.89.0.0/16"),
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},
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},
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want: parseSubnet("10.90.0.0/25"),
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},
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{
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name: "two subnet pools with no free subnet",
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args: args{
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subnetPools: []config.SubnetPool{
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{Base: parseIPNet("10.89.0.0/16"), Size: 24},
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{Base: parseIPNet("10.90.0.0/16"), Size: 25},
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},
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usedNetworks: []*net.IPNet{
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parseCIDR("10.89.0.0/8"),
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},
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},
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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got, err := GetFreeIPv4NetworkSubnet(tt.args.usedNetworks, tt.args.subnetPools)
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if (err != nil) != tt.wantErr {
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t.Errorf("GetFreeIPv4NetworkSubnet() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if !reflect.DeepEqual(got, tt.want) {
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t.Errorf("GetFreeIPv4NetworkSubnet() = %v, want %v", got.Subnet.String(), tt.want.Subnet.String())
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}
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})
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}
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}
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