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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package key
import (
"errors"
"testing"
"go4.org/mem"
)
func TestDERPMeshIsValid(t *testing.T) {
for name, tt := range map[string]struct {
input string
want string
wantErr error
}{
"good": {
input: "0123456789012345678901234567890123456789012345678901234567890123",
want: "0123456789012345678901234567890123456789012345678901234567890123",
wantErr: nil,
},
"hex": {
input: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
want: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
wantErr: nil,
},
"uppercase": {
input: "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF",
want: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
wantErr: nil,
},
"whitespace": {
input: " 0123456789012345678901234567890123456789012345678901234567890123 ",
want: "0123456789012345678901234567890123456789012345678901234567890123",
wantErr: nil,
},
"short": {
input: "0123456789abcdef",
wantErr: ErrInvalidMeshKey,
},
"long": {
input: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0",
wantErr: ErrInvalidMeshKey,
},
} {
t.Run(name, func(t *testing.T) {
k, err := ParseDERPMesh(tt.input)
if !errors.Is(err, tt.wantErr) {
t.Errorf("err %v, want %v", err, tt.wantErr)
}
got := k.String()
if got != tt.want && tt.wantErr == nil {
t.Errorf("got %q, want %q", got, tt.want)
}
})
}
}
func TestDERPMesh(t *testing.T) {
t.Parallel()
for name, tt := range map[string]struct {
str string
hex []byte
equal bool // are str and hex equal?
}{
"zero": {
str: "0000000000000000000000000000000000000000000000000000000000000000",
hex: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
equal: true,
},
"equal": {
str: "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef",
hex: []byte{
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
},
equal: true,
},
"unequal": {
str: "0badc0de00000000000000000000000000000000000000000000000000000000",
hex: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
equal: false,
},
} {
t.Run(name, func(t *testing.T) {
t.Parallel()
k, err := ParseDERPMesh(tt.str)
if err != nil {
t.Fatal(err)
}
// string representation should round-trip
s := k.String()
if s != tt.str {
t.Fatalf("string %s, want %s", s, tt.str)
}
// if tt.equal, then tt.hex is intended to be equal
if k.k != [32]byte(tt.hex) && tt.equal {
t.Fatalf("decoded %x, want %x", k.k, tt.hex)
}
h := DERPMeshFromRaw32(mem.B(tt.hex))
if k.Equal(h) != tt.equal {
if tt.equal {
t.Fatalf("%v != %v", k, h)
} else {
t.Fatalf("%v == %v", k, h)
}
}
})
}
}
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