Make //crypto factories return std::unique_ptr<>s

crypto/symmetric_key_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "crypto/symmetric_key.h"
 
 #include <memory>
 #include <string>
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(SymmetricKeyTest, GenerateRandomKey) {
   std::unique_ptr<crypto::SymmetricKey> key(
       crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 256));
-  ASSERT_TRUE(NULL != key.get());
+  ASSERT_TRUE(key);
   std::string raw_key;
   EXPECT_TRUE(key->GetRawKey(&raw_key));
   EXPECT_EQ(32U, raw_key.size());
 
   // Do it again and check that the keys are different.
   // (Note: this has a one-in-10^77 chance of failure!)
   std::unique_ptr<crypto::SymmetricKey> key2(
       crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 256));
-  ASSERT_TRUE(NULL != key2.get());
+  ASSERT_TRUE(key2);
   std::string raw_key2;
   EXPECT_TRUE(key2->GetRawKey(&raw_key2));
   EXPECT_EQ(32U, raw_key2.size());
   EXPECT_NE(raw_key, raw_key2);
 }
 
 TEST(SymmetricKeyTest, ImportGeneratedKey) {
   std::unique_ptr<crypto::SymmetricKey> key1(
       crypto::SymmetricKey::GenerateRandomKey(crypto::SymmetricKey::AES, 256));
-  ASSERT_TRUE(NULL != key1.get());
+  ASSERT_TRUE(key1);
   std::string raw_key1;
   EXPECT_TRUE(key1->GetRawKey(&raw_key1));
 
   std::unique_ptr<crypto::SymmetricKey> key2(
       crypto::SymmetricKey::Import(crypto::SymmetricKey::AES, raw_key1));
-  ASSERT_TRUE(NULL != key2.get());
+  ASSERT_TRUE(key2);
 
   std::string raw_key2;
   EXPECT_TRUE(key2->GetRawKey(&raw_key2));
 
   EXPECT_EQ(raw_key1, raw_key2);
 }
 
 TEST(SymmetricKeyTest, ImportDerivedKey) {
   std::unique_ptr<crypto::SymmetricKey> key1(
       crypto::SymmetricKey::DeriveKeyFromPassword(
           crypto::SymmetricKey::HMAC_SHA1, "password", "somesalt", 1024, 160));
-  ASSERT_TRUE(NULL != key1.get());
+  ASSERT_TRUE(key1);
   std::string raw_key1;
   EXPECT_TRUE(key1->GetRawKey(&raw_key1));
 
   std::unique_ptr<crypto::SymmetricKey> key2(
       crypto::SymmetricKey::Import(crypto::SymmetricKey::HMAC_SHA1, raw_key1));
-  ASSERT_TRUE(NULL != key2.get());
+  ASSERT_TRUE(key2);
 
   std::string raw_key2;
   EXPECT_TRUE(key2->GetRawKey(&raw_key2));
 
   EXPECT_EQ(raw_key1, raw_key2);
 }
 
 struct PBKDF2TestVector {
   crypto::SymmetricKey::Algorithm algorithm;
   const char* password;
   const char* salt;
   unsigned int rounds;
   unsigned int key_size_in_bits;
   const char* expected;  // ASCII encoded hex bytes
 };
 
 class SymmetricKeyDeriveKeyFromPasswordTest
     : public testing::TestWithParam<PBKDF2TestVector> {
 };
 
 TEST_P(SymmetricKeyDeriveKeyFromPasswordTest, DeriveKeyFromPassword) {
   PBKDF2TestVector test_data(GetParam());
   std::unique_ptr<crypto::SymmetricKey> key(
       crypto::SymmetricKey::DeriveKeyFromPassword(
           test_data.algorithm, test_data.password, test_data.salt,
           test_data.rounds, test_data.key_size_in_bits));
-  ASSERT_TRUE(NULL != key.get());
+  ASSERT_TRUE(key);
 
   std::string raw_key;
   key->GetRawKey(&raw_key);
   EXPECT_EQ(test_data.key_size_in_bits / 8, raw_key.size());
   EXPECT_EQ(test_data.expected,
             base::ToLowerASCII(base::HexEncode(raw_key.data(),
                                                raw_key.size())));
 }
 
 static const PBKDF2TestVector kTestVectors[] = {
@@ skipping 108 matching lines @@
     "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
     "pass phrase exceeds block size",
     20,
     256,
     "e0739745dc28b8721ba402e05214d2ac1eab54cf72bee1fba388297a09eb493c",
   },
 };
 
 INSTANTIATE_TEST_CASE_P(, SymmetricKeyDeriveKeyFromPasswordTest,
                         testing::ValuesIn(kTestVectors));