112 lines
2.6 KiB
Go
112 lines
2.6 KiB
Go
package dns
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import (
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"net"
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"testing"
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)
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func TestOPTTtl(t *testing.T) {
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e := &OPT{}
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e.Hdr.Name = "."
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e.Hdr.Rrtype = TypeOPT
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// verify the default setting of DO=0
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if e.Do() {
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t.Errorf("DO bit should be zero")
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}
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// There are 6 possible invocations of SetDo():
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//
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// 1. Starting with DO=0, using SetDo()
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// 2. Starting with DO=0, using SetDo(true)
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// 3. Starting with DO=0, using SetDo(false)
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// 4. Starting with DO=1, using SetDo()
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// 5. Starting with DO=1, using SetDo(true)
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// 6. Starting with DO=1, using SetDo(false)
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// verify that invoking SetDo() sets DO=1 (TEST #1)
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e.SetDo()
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if !e.Do() {
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t.Errorf("DO bit should be non-zero")
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}
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// verify that using SetDo(true) works when DO=1 (TEST #5)
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e.SetDo(true)
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if !e.Do() {
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t.Errorf("DO bit should still be non-zero")
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}
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// verify that we can use SetDo(false) to set DO=0 (TEST #6)
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e.SetDo(false)
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if e.Do() {
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t.Errorf("DO bit should be zero")
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}
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// verify that if we call SetDo(false) when DO=0 that it is unchanged (TEST #3)
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e.SetDo(false)
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if e.Do() {
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t.Errorf("DO bit should still be zero")
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}
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// verify that using SetDo(true) works for DO=0 (TEST #2)
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e.SetDo(true)
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if !e.Do() {
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t.Errorf("DO bit should be non-zero")
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}
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// verify that using SetDo() works for DO=1 (TEST #4)
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e.SetDo()
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if !e.Do() {
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t.Errorf("DO bit should be non-zero")
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}
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if e.Version() != 0 {
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t.Errorf("version should be non-zero")
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}
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e.SetVersion(42)
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if e.Version() != 42 {
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t.Errorf("set 42, expected %d, got %d", 42, e.Version())
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}
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e.SetExtendedRcode(42)
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// ExtendedRcode has the last 4 bits set to 0.
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if e.ExtendedRcode() != 42&0xFFFFFFF0 {
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t.Errorf("set 42, expected %d, got %d", 42&0xFFFFFFF0, e.ExtendedRcode())
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}
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// This will reset the 8 upper bits of the extended rcode
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e.SetExtendedRcode(RcodeNotAuth)
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if e.ExtendedRcode() != 0 {
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t.Errorf("Setting a non-extended rcode is expected to set extended rcode to 0, got: %d", e.ExtendedRcode())
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}
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}
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func TestEDNS0_SUBNETUnpack(t *testing.T) {
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for _, ip := range []net.IP{
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net.IPv4(0xde, 0xad, 0xbe, 0xef),
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net.ParseIP("192.0.2.1"),
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net.ParseIP("2001:db8::68"),
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} {
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var s1 EDNS0_SUBNET
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s1.Address = ip
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if ip.To4() == nil {
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s1.Family = 2
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s1.SourceNetmask = net.IPv6len * 8
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} else {
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s1.Family = 1
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s1.SourceNetmask = net.IPv4len * 8
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}
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b, err := s1.pack()
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if err != nil {
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t.Fatalf("failed to pack: %v", err)
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}
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var s2 EDNS0_SUBNET
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if err := s2.unpack(b); err != nil {
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t.Fatalf("failed to unpack: %v", err)
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}
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if !ip.Equal(s2.Address) {
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t.Errorf("address different after unpacking; expected %s, got %s", ip, s2.Address)
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}
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}
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}
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