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// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package key
import (
"testing"
"tailscale.com/types/wgkey"
)
func TestTextUnmarshal(t *testing.T) {
p := Public{1, 2}
text, err := p.MarshalText()
if err != nil {
t.Fatal(err)
}
var p2 Public
if err := p2.UnmarshalText(text); err != nil {
t.Fatal(err)
}
if p != p2 {
t.Fatalf("mismatch; got %x want %x", p2, p)
}
}
func TestClamping(t *testing.T) {
t.Run("NewPrivate", func(t *testing.T) { testClamping(t, NewPrivate) })
// Also test the wgkey package, as their behavior should match.
t.Run("wgkey", func(t *testing.T) {
testClamping(t, func() Private {
k, err := wgkey.NewPrivate()
if err != nil {
t.Fatal(err)
}
return Private(k)
})
})
}
func testClamping(t *testing.T, newKey func() Private) {
for i := 0; i < 100; i++ {
k := newKey()
if k[0]&0b111 != 0 {
t.Fatalf("Bogus clamping in first byte: %#08b", k[0])
return
}
if k[31]>>6 != 1 {
t.Fatalf("Bogus clamping in last byte: %#08b", k[0])
}
}
}
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