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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Like crypto/rsa/boring_test.go but outside the crypto/ tree.
// Tests what happens if a package outside the crypto/ tree
// "adopts" a struct definition. This happens in golang.org/x/crypto/ssh.
package boring
import (
"crypto/rand"
"crypto/rsa"
"encoding/asn1"
"reflect"
"testing"
)
type publicKey rsa.PublicKey
func TestBoringASN1Marshal(t *testing.T) {
k, err := rsa.GenerateKey(rand.Reader, 128)
if err != nil {
t.Fatal(err)
}
pk := (*publicKey)(&k.PublicKey)
// This used to fail, because of the unexported 'boring' field.
// Now the compiler hides it [sic].
_, err = asn1.Marshal(*pk)
if err != nil {
t.Fatal(err)
}
}
func TestBoringDeepEqual(t *testing.T) {
k0, err := rsa.GenerateKey(rand.Reader, 128)
if err != nil {
t.Fatal(err)
}
k := (*publicKey)(&k0.PublicKey)
k2 := *k
rsa.EncryptPKCS1v15(rand.Reader, (*rsa.PublicKey)(&k2), []byte("hello")) // initialize hidden boring field
if !reflect.DeepEqual(k, &k2) {
// compiler should be hiding the boring field from reflection
t.Fatalf("DeepEqual compared boring fields")
}
}
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