89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package dhcpsvc
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import (
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"net/netip"
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"testing"
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"github.com/google/gopacket/layers"
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"github.com/stretchr/testify/assert"
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)
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func TestIPv4Config_Options(t *testing.T) {
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oneIP, otherIP := netip.MustParseAddr("1.2.3.4"), netip.MustParseAddr("5.6.7.8")
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subnetMask := netip.MustParseAddr("255.255.0.0")
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opt1 := layers.NewDHCPOption(layers.DHCPOptSubnetMask, subnetMask.AsSlice())
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opt6 := layers.NewDHCPOption(layers.DHCPOptDNS, append(oneIP.AsSlice(), otherIP.AsSlice()...))
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opt28 := layers.NewDHCPOption(layers.DHCPOptBroadcastAddr, oneIP.AsSlice())
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opt121 := layers.NewDHCPOption(layers.DHCPOptClasslessStaticRoute, []byte("cba"))
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testCases := []struct {
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name string
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conf *IPv4Config
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wantExplicit layers.DHCPOptions
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}{{
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name: "all_default",
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conf: &IPv4Config{
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Options: nil,
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},
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wantExplicit: nil,
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}, {
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name: "configured_ip",
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conf: &IPv4Config{
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Options: layers.DHCPOptions{opt28},
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},
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wantExplicit: layers.DHCPOptions{opt28},
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}, {
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name: "configured_ips",
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conf: &IPv4Config{
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Options: layers.DHCPOptions{opt6},
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},
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wantExplicit: layers.DHCPOptions{opt6},
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}, {
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name: "configured_del",
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conf: &IPv4Config{
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Options: layers.DHCPOptions{
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layers.NewDHCPOption(layers.DHCPOptBroadcastAddr, nil),
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},
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},
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wantExplicit: nil,
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}, {
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name: "rewritten_del",
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conf: &IPv4Config{
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Options: layers.DHCPOptions{
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layers.NewDHCPOption(layers.DHCPOptBroadcastAddr, nil),
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opt28,
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},
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},
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wantExplicit: layers.DHCPOptions{opt28},
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}, {
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name: "configured_and_del",
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conf: &IPv4Config{
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Options: layers.DHCPOptions{
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layers.NewDHCPOption(layers.DHCPOptClasslessStaticRoute, []byte("a")),
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layers.NewDHCPOption(layers.DHCPOptClasslessStaticRoute, nil),
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opt121,
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},
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},
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wantExplicit: layers.DHCPOptions{opt121},
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}, {
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name: "replace_config_value",
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conf: &IPv4Config{
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SubnetMask: netip.MustParseAddr("255.255.255.0"),
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Options: layers.DHCPOptions{opt1},
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},
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wantExplicit: layers.DHCPOptions{opt1},
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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imp, exp := tc.conf.options()
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assert.Equal(t, tc.wantExplicit, exp)
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for c := range exp {
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assert.NotContains(t, imp, c)
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}
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})
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}
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}
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