Add RSAPrivateKey::CreateFromKeypair()

crypto/rsa_private_key_nss_unittest.cc

Index: crypto/rsa_private_key_nss_unittest.cc
diff --git a/crypto/rsa_private_key_nss_unittest.cc b/crypto/rsa_private_key_nss_unittest.cc
index 0ec801d26d1d45b3c8e2c68b28b64734ad569f8b..59c641d2ce61763f5fa9cce14b7ab4ff99746755 100644
--- a/crypto/rsa_private_key_nss_unittest.cc
+++ b/crypto/rsa_private_key_nss_unittest.cc
@@ -25,9 +25,33 @@ class RSAPrivateKeyNSSTest : public testing::Test {
   }
 
  private:
+  ScopedTestNSSDB test_nssdb_;
+
   DISALLOW_COPY_AND_ASSIGN(RSAPrivateKeyNSSTest);
 };
 
+TEST_F(RSAPrivateKeyNSSTest, CreateFromKeypairTest) {
+  scoped_ptr<crypto::RSAPrivateKey> key_pair(RSAPrivateKey::Create(256));
+
+  scoped_ptr<crypto::RSAPrivateKey> key_copy(
+      RSAPrivateKey::CreateFromKeypair(key_pair->key(),
+                                       key_pair->public_key()));
+  ASSERT_TRUE(key_copy.get());
+
+  std::vector<uint8> privkey;
+  std::vector<uint8> pubkey;
+  ASSERT_TRUE(key_pair->ExportPrivateKey(&privkey));
+  ASSERT_TRUE(key_pair->ExportPublicKey(&pubkey));
+
+  std::vector<uint8> privkey_copy;
+  std::vector<uint8> pubkey_copy;
+  ASSERT_TRUE(key_copy->ExportPrivateKey(&privkey_copy));
+  ASSERT_TRUE(key_copy->ExportPublicKey(&pubkey_copy));
+
+  ASSERT_EQ(privkey, privkey_copy);
+  ASSERT_EQ(pubkey, pubkey_copy);
+}
+
 TEST_F(RSAPrivateKeyNSSTest, FindFromPublicKey) {
   // Create a keypair, which will put the keys in the user's NSSDB.
   scoped_ptr<crypto::RSAPrivateKey> key_pair(RSAPrivateKey::Create(256));