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package dns
import (
"testing"
)
func TestCmToM(t *testing.T) {
s := cmToM((0 << 4) + 0)
if s != "0.00" {
t.Error("0, 0")
}
s = cmToM((1 << 4) + 0)
if s != "0.01" {
t.Error("1, 0")
}
s = cmToM((3 << 4) + 1)
if s != "0.30" {
t.Error("3, 1")
}
s = cmToM((4 << 4) + 2)
if s != "4" {
t.Error("4, 2")
}
s = cmToM((5 << 4) + 3)
if s != "50" {
t.Error("5, 3")
}
s = cmToM((7 << 4) + 5)
if s != "7000" {
t.Error("7, 5")
}
s = cmToM((9 << 4) + 9)
if s != "90000000" {
t.Error("9, 9")
}
}
func TestSplitN(t *testing.T) {
xs := splitN("abc", 5)
if len(xs) != 1 && xs[0] != "abc" {
t.Errorf("failure to split abc")
}
s := ""
for i := 0; i < 255; i++ {
s += "a"
}
xs = splitN(s, 255)
if len(xs) != 1 && xs[0] != s {
t.Errorf("failure to split 255 char long string")
}
s += "b"
xs = splitN(s, 255)
if len(xs) != 2 || xs[1] != "b" {
t.Errorf("failure to split 256 char long string: %d", len(xs))
}
// Make s longer
for i := 0; i < 255; i++ {
s += "a"
}
xs = splitN(s, 255)
if len(xs) != 3 || xs[2] != "a" {
t.Errorf("failure to split 510 char long string: %d", len(xs))
}
}
func TestSprintName(t *testing.T) {
tests := map[string]string{
// Non-numeric escaping of special printable characters.
" '@;()\"\\..example": `\ \'\@\;\(\)\"\..example`,
"\\032\\039\\064\\059\\040\\041\\034\\046\\092.example": `\ \'\@\;\(\)\"\.\\.example`,
// Numeric escaping of nonprintable characters.
"\x00\x07\x09\x0a\x1f.\x7f\x80\xad\xef\xff": `\000\007\009\010\031.\127\128\173\239\255`,
"\\000\\007\\009\\010\\031.\\127\\128\\173\\239\\255": `\000\007\009\010\031.\127\128\173\239\255`,
// No escaping of other printable characters, at least after a prior escape.
";[a-zA-Z0-9_]+/*.~": `\;[a-zA-Z0-9_]+/*.~`,
";\\091\\097\\045\\122\\065\\045\\090\\048\\045\\057\\095\\093\\043\\047\\042.\\126": `\;[a-zA-Z0-9_]+/*.~`,
// "\\091\\097\\045\\122\\065\\045\\090\\048\\045\\057\\095\\093\\043\\047\\042.\\126": `[a-zA-Z0-9_]+/*.~`,
// Incomplete "dangling" escapes are dropped regardless of prior escaping.
"a\\": `a`,
";\\": `\;`,
// Escaped dots stay escaped regardless of prior escaping.
"a\\.\\046.\\.\\046": `a\.\..\.\.`,
"a\\046\\..\\046\\.": `a\.\..\.\.`,
}
for input, want := range tests {
got := sprintName(input)
if got != want {
t.Errorf("input %q: expected %q, got %q", input, want, got)
}
}
}
func TestSprintTxtOctet(t *testing.T) {
got := sprintTxtOctet("abc\\.def\007\"\127@\255\x05\xef\\")
if want := "\"abc\\.def\\007\\\"W@\\173\\005\\239\""; got != want {
t.Errorf("expected %q, got %q", want, got)
}
}
func TestSprintTxt(t *testing.T) {
got := sprintTxt([]string{
"abc\\.def\007\"\127@\255\x05\xef\\",
"example.com",
})
if want := "\"abc.def\\007\\\"W@\\173\\005\\239\" \"example.com\""; got != want {
t.Errorf("expected %q, got %q", want, got)
}
}
func TestRPStringer(t *testing.T) {
rp := &RP{
Hdr: RR_Header{
Name: "test.example.com.",
Rrtype: TypeRP,
Class: ClassINET,
Ttl: 600,
},
Mbox: "\x05first.example.com.",
Txt: "second.\x07example.com.",
}
const expected = "test.example.com.\t600\tIN\tRP\t\\005first.example.com. second.\\007example.com."
if rp.String() != expected {
t.Errorf("expected %v, got %v", expected, rp)
}
_, err := NewRR(rp.String())
if err != nil {
t.Fatalf("error parsing %q: %v", rp, err)
}
}
func BenchmarkSprintName(b *testing.B) {
for n := 0; n < b.N; n++ {
got := sprintName("abc\\.def\007\"\127@\255\x05\xef\\")
if want := "abc\\.def\\007\\\"W\\@\\173\\005\\239"; got != want {
b.Fatalf("expected %q, got %q", want, got)
}
}
}
func BenchmarkSprintName_NoEscape(b *testing.B) {
for n := 0; n < b.N; n++ {
got := sprintName("large.example.com")
if want := "large.example.com"; got != want {
b.Fatalf("expected %q, got %q", want, got)
}
}
}
func BenchmarkSprintTxtOctet(b *testing.B) {
for n := 0; n < b.N; n++ {
got := sprintTxtOctet("abc\\.def\007\"\127@\255\x05\xef\\")
if want := "\"abc\\.def\\007\\\"W@\\173\\005\\239\""; got != want {
b.Fatalf("expected %q, got %q", want, got)
}
}
}
func BenchmarkSprintTxt(b *testing.B) {
txt := []string{
"abc\\.def\007\"\127@\255\x05\xef\\",
"example.com",
}
b.ResetTimer()
for n := 0; n < b.N; n++ {
got := sprintTxt(txt)
if want := "\"abc.def\\007\\\"W@\\173\\005\\239\" \"example.com\""; got != want {
b.Fatalf("expected %q, got %q", got, want)
}
}
}
|
