Convert various tests to GTest.

BUG=129

Change-Id: I4a501fa620b7b5b4c585731ec1ece94407e9b727
Reviewed-on: https://boringssl-review.googlesource.com/16510
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index 60bec17..e751e0e 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -223,15 +223,6 @@
 target_link_libraries(thread_test crypto)
 add_dependencies(all_tests thread_test)
 
-add_executable(
-  refcount_test
-
-  refcount_test.cc
-)
-
-target_link_libraries(refcount_test crypto)
-add_dependencies(all_tests refcount_test)
-
 # TODO(davidben): Convert the remaining tests to GTest.
 add_executable(
   crypto_test
@@ -252,11 +243,16 @@
   dsa/dsa_test.cc
   err/err_test.cc
   evp/evp_extra_test.cc
+  evp/pbkdf_test.cc
   fipsmodule/aes/aes_test.cc
   fipsmodule/ec/ec_test.cc
   fipsmodule/rand/ctrdrbg_test.cc
-  test/file_test_gtest.cc
+  hkdf/hkdf_test.cc
+  lhash/lhash_test.cc
+  pool/pool_test.cc
+  refcount_test.cc
   rsa_extra/rsa_test.cc
+  test/file_test_gtest.cc
 
   $<TARGET_OBJECTS:crypto_test_data>
   $<TARGET_OBJECTS:gtest_main>
diff --git a/crypto/evp/CMakeLists.txt b/crypto/evp/CMakeLists.txt
index 6e69a82..48caf9e 100644
--- a/crypto/evp/CMakeLists.txt
+++ b/crypto/evp/CMakeLists.txt
@@ -30,14 +30,5 @@
   $<TARGET_OBJECTS:test_support>
 )
 
-add_executable(
-  pbkdf_test
-
-  pbkdf_test.cc
-
-  $<TARGET_OBJECTS:test_support>
-)
-
 target_link_libraries(evp_test crypto)
-target_link_libraries(pbkdf_test crypto)
-add_dependencies(all_tests evp_test pbkdf_test)
+add_dependencies(all_tests evp_test)
diff --git a/crypto/evp/pbkdf_test.cc b/crypto/evp/pbkdf_test.cc
index 5284700..54bed4f 100644
--- a/crypto/evp/pbkdf_test.cc
+++ b/crypto/evp/pbkdf_test.cc
@@ -12,93 +12,53 @@
  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
-#include <stdio.h>
-#include <string.h>
+#include <gtest/gtest.h>
 
-#include <openssl/crypto.h>
 #include <openssl/digest.h>
-#include <openssl/err.h>
 #include <openssl/evp.h>
 
 #include "../internal.h"
+#include "../test/test_util.h"
 
 
-// Prints out the data buffer as a sequence of hex bytes.
-static void PrintDataHex(const void *data, size_t len) {
-  for (size_t i = 0; i < len; ++i) {
-    fprintf(stderr, "%02x", (int)((const uint8_t *)data)[i]);
-  }
-}
-
-// Helper for testing that PBKDF2 derives the expected key from the given
-// inputs. Returns 1 on success, 0 otherwise.
-static bool TestPBKDF2(const void *password, size_t password_len,
-                       const void *salt, size_t salt_len, unsigned iterations,
-                       const EVP_MD *digest, size_t key_len,
-                       const uint8_t *expected_key) {
-  uint8_t key[64];
-
-  if (key_len > sizeof(key)) {
-    fprintf(stderr, "Output buffer is not large enough.\n");
-    return false;
-  }
-
-  if (!PKCS5_PBKDF2_HMAC((const char *)password, password_len,
-                         (const uint8_t *)salt, salt_len, iterations, digest,
-                         key_len, key)) {
-    fprintf(stderr, "Call to PKCS5_PBKDF2_HMAC failed\n");
-    ERR_print_errors_fp(stderr);
-    return false;
-  }
-
-  if (OPENSSL_memcmp(key, expected_key, key_len) != 0) {
-    fprintf(stderr, "Resulting key material does not match expectation\n");
-    fprintf(stderr, "Expected:\n    ");
-    PrintDataHex(expected_key, key_len);
-    fprintf(stderr, "\nActual:\n    ");
-    PrintDataHex(key, key_len);
-    fprintf(stderr, "\n");
-    return false;
-  }
-
-  return true;
-}
-
 // Tests deriving a key using an empty password (specified both as NULL and as
 // non-NULL). Note that NULL has special meaning to HMAC initialization.
-static bool TestEmptyPassword() {
+TEST(PBKDFTest, EmptyPassword) {
   const uint8_t kKey[] = {0xa3, 0x3d, 0xdd, 0xc3, 0x04, 0x78, 0x18,
                           0x55, 0x15, 0x31, 0x1f, 0x87, 0x52, 0x89,
                           0x5d, 0x36, 0xea, 0x43, 0x63, 0xa2};
+  uint8_t key[sizeof(kKey)];
 
-  if (!TestPBKDF2(NULL, 0, "salt", 4, 1, EVP_sha1(), sizeof(kKey), kKey) ||
-      !TestPBKDF2("", 0, "salt", 4, 1, EVP_sha1(), sizeof(kKey), kKey)) {
-    return false;
-  }
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC(NULL, 0, (const uint8_t *)"salt", 4, 1,
+                                EVP_sha1(), sizeof(kKey), key));
+  EXPECT_EQ(Bytes(kKey), Bytes(key));
 
-  return true;
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("", 0, (const uint8_t *)"salt", 4, 1,
+                                EVP_sha1(), sizeof(kKey), key));
+  EXPECT_EQ(Bytes(kKey), Bytes(key));
 }
 
 // Tests deriving a key using an empty salt. Note that the expectation was
 // generated using OpenSSL itself, and hence is not verified.
-static bool TestEmptySalt() {
+TEST(PBKDFTest, EmptySalt) {
   const uint8_t kKey[] = {0x8b, 0xc2, 0xf9, 0x16, 0x7a, 0x81, 0xcd, 0xcf,
                           0xad, 0x12, 0x35, 0xcd, 0x90, 0x47, 0xf1, 0x13,
                           0x62, 0x71, 0xc1, 0xf9, 0x78, 0xfc, 0xfc, 0xb3,
                           0x5e, 0x22, 0xdb, 0xea, 0xfa, 0x46, 0x34, 0xf6};
+  uint8_t key[sizeof(kKey)];
 
-  if (!TestPBKDF2("password", 8, NULL, 0, 2, EVP_sha256(), sizeof(kKey),
-                  kKey) ||
-      !TestPBKDF2("password", 8, "", 0, 2, EVP_sha256(), sizeof(kKey), kKey)) {
-    return false;
-  }
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("password", 8, NULL, 0, 2, EVP_sha256(),
+                                sizeof(kKey), key));
+  EXPECT_EQ(Bytes(kKey), Bytes(key));
 
-  return true;
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("password", 8, (const uint8_t *)"", 0, 2,
+                                EVP_sha256(), sizeof(kKey), key));
+  EXPECT_EQ(Bytes(kKey), Bytes(key));
 }
 
 // Exercises test vectors taken from https://tools.ietf.org/html/rfc6070.
 // Note that each of these test vectors uses SHA-1 as the digest.
-static bool TestRFC6070Vectors() {
+TEST(PBKDFTest, RFC6070Vectors) {
   const uint8_t kKey1[] = {0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e,
                            0x71, 0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60,
                            0x12, 0x06, 0x2f, 0xe0, 0x37, 0xa6};
@@ -107,21 +67,25 @@
                            0x41, 0xf0, 0xd8, 0xde, 0x89, 0x57};
   const uint8_t kKey3[] = {0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
                            0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3};
+  uint8_t key[sizeof(kKey1)];
+  static_assert(sizeof(key) >= sizeof(kKey2), "output too small");
+  static_assert(sizeof(key) >= sizeof(kKey3), "output too small");
 
-  if (!TestPBKDF2("password", 8, "salt", 4, 1, EVP_sha1(), sizeof(kKey1),
-                  kKey1) ||
-      !TestPBKDF2("password", 8, "salt", 4, 2, EVP_sha1(), sizeof(kKey2),
-                  kKey2) ||
-      !TestPBKDF2("pass\0word", 9, "sa\0lt", 5, 4096, EVP_sha1(),
-                  sizeof(kKey3), kKey3)) {
-    return false;
-  }
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("password", 8, (const uint8_t *)"salt", 4, 1,
+                                EVP_sha1(), sizeof(kKey1), key));
+  EXPECT_EQ(Bytes(kKey1), Bytes(key, sizeof(kKey1)));
 
-  return true;
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("password", 8, (const uint8_t *)"salt", 4, 2,
+                                EVP_sha1(), sizeof(kKey2), key));
+  EXPECT_EQ(Bytes(kKey2), Bytes(key, sizeof(kKey2)));
+
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("pass\0word", 9, (const uint8_t *)"sa\0lt", 5,
+                                4096, EVP_sha1(), sizeof(kKey3), key));
+  EXPECT_EQ(Bytes(kKey3), Bytes(key, sizeof(kKey3)));
 }
 
 // Tests key derivation using SHA-2 digests.
-static bool TestSHA2() {
+TEST(PBKDFTest, SHA2) {
   // This test was taken from:
   // http://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors.
   const uint8_t kKey1[] = {0xae, 0x4d, 0x0c, 0x95, 0xaf, 0x6b, 0x46, 0xd3,
@@ -139,15 +103,18 @@
       0x75, 0xae, 0xfe, 0x30, 0x22, 0x5c, 0x58, 0x3a, 0x18, 0x6c, 0xd8,
       0x2b, 0xd4, 0xda, 0xea, 0x97, 0x24, 0xa3, 0xd3, 0xb8};
 
-  if (!TestPBKDF2("password", 8, "salt", 4, 2, EVP_sha256(), sizeof(kKey1),
-                  kKey1) ||
-      !TestPBKDF2("passwordPASSWORDpassword", 24,
-                  "saltSALTsaltSALTsaltSALTsaltSALTsalt", 36, 4096,
-                  EVP_sha512(), sizeof(kKey2), kKey2)) {
-    return false;
-  }
+  uint8_t key[sizeof(kKey2)];
+  static_assert(sizeof(key) >= sizeof(kKey1), "output too small");
 
-  return true;
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC("password", 8, (const uint8_t *)"salt", 4, 2,
+                                EVP_sha256(), sizeof(kKey1), key));
+  EXPECT_EQ(Bytes(kKey1), Bytes(key, sizeof(kKey1)));
+
+  ASSERT_TRUE(
+      PKCS5_PBKDF2_HMAC("passwordPASSWORDpassword", 24,
+                        (const uint8_t *)"saltSALTsaltSALTsaltSALTsaltSALTsalt",
+                        36, 4096, EVP_sha512(), sizeof(kKey2), key));
+  EXPECT_EQ(Bytes(kKey2), Bytes(key, sizeof(kKey2)));
 }
 
 // Tests key derivation using iterations=0.
@@ -155,7 +122,7 @@
 // RFC 2898 defines the iteration count (c) as a "positive integer". So doing a
 // key derivation with iterations=0 is ill-defined and should result in a
 // failure.
-static bool TestZeroIterations() {
+TEST(PBKDFTest, ZeroIterations) {
   static const char kPassword[] = "password";
   const size_t password_len = strlen(kPassword);
   static const uint8_t kSalt[] = {1, 2, 3, 4};
@@ -166,57 +133,18 @@
   const size_t key_len = sizeof(key);
 
   // Verify that calling with iterations=1 works.
-  if (!PKCS5_PBKDF2_HMAC(kPassword, password_len, kSalt, salt_len,
-                         1 /* iterations */, digest, key_len, key)) {
-    fprintf(stderr, "PBKDF2 failed with iterations=1\n");
-    return false;
-  }
+  ASSERT_TRUE(PKCS5_PBKDF2_HMAC(kPassword, password_len, kSalt, salt_len,
+                                1 /* iterations */, digest, key_len, key));
 
   // Flip the first key byte (so can later test if it got set).
   const uint8_t expected_first_byte = key[0];
   key[0] = ~key[0];
 
   // However calling it with iterations=0 fails.
-  if (PKCS5_PBKDF2_HMAC(kPassword, password_len, kSalt, salt_len,
-                        0 /* iterations */, digest, key_len, key)) {
-    fprintf(stderr, "PBKDF2 returned zero with iterations=0\n");
-    return false;
-  }
+  ASSERT_FALSE(PKCS5_PBKDF2_HMAC(kPassword, password_len, kSalt, salt_len,
+                                 0 /* iterations */, digest, key_len, key));
 
   // For backwards compatibility, the iterations == 0 case still fills in
   // the out key.
-  return key[0] == expected_first_byte;
-}
-
-int main(void) {
-  CRYPTO_library_init();
-
-  if (!TestEmptyPassword()) {
-    fprintf(stderr, "TestEmptyPassword failed\n");
-    return 1;
-  }
-
-  if (!TestEmptySalt()) {
-    fprintf(stderr, "TestEmptySalt failed\n");
-    return 1;
-  }
-
-  if (!TestRFC6070Vectors()) {
-    fprintf(stderr, "TestRFC6070Vectors failed\n");
-    return 1;
-  }
-
-  if (!TestSHA2()) {
-    fprintf(stderr, "TestSHA2 failed\n");
-    return 1;
-  }
-
-  if (!TestZeroIterations()) {
-    fprintf(stderr, "TestZeroIterations failed\n");
-    return 1;
-  }
-
-  printf("PASS\n");
-  ERR_free_strings();
-  return 0;
+  EXPECT_EQ(expected_first_byte, key[0]);
 }
diff --git a/crypto/hkdf/CMakeLists.txt b/crypto/hkdf/CMakeLists.txt
index 3056a54..43309eb 100644
--- a/crypto/hkdf/CMakeLists.txt
+++ b/crypto/hkdf/CMakeLists.txt
@@ -7,14 +7,3 @@
 
   hkdf.c
 )
-
-add_executable(
-  hkdf_test
-
-  hkdf_test.cc
-
-  $<TARGET_OBJECTS:test_support>
-)
-
-target_link_libraries(hkdf_test crypto)
-add_dependencies(all_tests hkdf_test)
diff --git a/crypto/hkdf/hkdf_test.cc b/crypto/hkdf/hkdf_test.cc
index 164fa1f..b763b9b 100644
--- a/crypto/hkdf/hkdf_test.cc
+++ b/crypto/hkdf/hkdf_test.cc
@@ -12,15 +12,12 @@
  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
-#include <stdio.h>
-#include <string.h>
-
-#include <openssl/crypto.h>
 #include <openssl/digest.h>
 #include <openssl/err.h>
 #include <openssl/hkdf.h>
 
-#include "../internal.h"
+#include <gtest/gtest.h>
+
 #include "../test/test_util.h"
 
 
@@ -247,50 +244,25 @@
   },
 };
 
-int main(void) {
-  CRYPTO_library_init();
-
+TEST(HKDFTest, TestVectors) {
   for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kTests); i++) {
+    SCOPED_TRACE(i);
     const HKDFTestVector *test = &kTests[i];
+
     uint8_t prk[EVP_MAX_MD_SIZE];
     size_t prk_len;
-    if (!HKDF_extract(prk, &prk_len, test->md_func(), test->ikm, test->ikm_len,
-                      test->salt, test->salt_len)) {
-      fprintf(stderr, "Call to HKDF_extract failed\n");
-      ERR_print_errors_fp(stderr);
-      return 1;
-    }
-    if (prk_len != test->prk_len ||
-        OPENSSL_memcmp(prk, test->prk, test->prk_len) != 0) {
-      fprintf(stderr, "%zu: Resulting PRK does not match test vector\n", i);
-      return 1;
-    }
+    ASSERT_TRUE(HKDF_extract(prk, &prk_len, test->md_func(), test->ikm,
+                             test->ikm_len, test->salt, test->salt_len));
+    EXPECT_EQ(Bytes(test->prk, test->prk_len), Bytes(prk, prk_len));
+
     uint8_t buf[82];
-    if (!HKDF_expand(buf, test->out_len, test->md_func(), prk, prk_len,
-                     test->info, test->info_len)) {
-      fprintf(stderr, "Call to HKDF_expand failed\n");
-      ERR_print_errors_fp(stderr);
-      return 1;
-    }
-    if (OPENSSL_memcmp(buf, test->out, test->out_len) != 0) {
-      fprintf(stderr,
-              "%zu: Resulting key material does not match test vector\n", i);
-      return 1;
-    }
+    ASSERT_TRUE(HKDF_expand(buf, test->out_len, test->md_func(), prk, prk_len,
+                            test->info, test->info_len));
+    EXPECT_EQ(Bytes(test->out, test->out_len), Bytes(buf, test->out_len));
 
-    if (!HKDF(buf, test->out_len, test->md_func(), test->ikm, test->ikm_len,
-              test->salt, test->salt_len, test->info, test->info_len)) {
-      fprintf(stderr, "Call to HKDF failed\n");
-      ERR_print_errors_fp(stderr);
-      return 1;
-    }
-    if (OPENSSL_memcmp(buf, test->out, test->out_len) != 0) {
-      fprintf(stderr,
-              "%zu: Resulting key material does not match test vector\n", i);
-      return 1;
-    }
+    ASSERT_TRUE(HKDF(buf, test->out_len, test->md_func(), test->ikm,
+                     test->ikm_len, test->salt, test->salt_len, test->info,
+                     test->info_len));
+    EXPECT_EQ(Bytes(test->out, test->out_len), Bytes(buf, test->out_len));
   }
-
-  printf("PASS\n");
-  return 0;
 }
diff --git a/crypto/lhash/CMakeLists.txt b/crypto/lhash/CMakeLists.txt
index bd6005b..7a5f161 100644
--- a/crypto/lhash/CMakeLists.txt
+++ b/crypto/lhash/CMakeLists.txt
@@ -7,14 +7,3 @@
 
   lhash.c
 )
-
-add_executable(
-  lhash_test
-
-  lhash_test.cc
-
-  $<TARGET_OBJECTS:test_support>
-)
-
-target_link_libraries(lhash_test crypto)
-add_dependencies(all_tests lhash_test)
diff --git a/crypto/lhash/lhash_test.cc b/crypto/lhash/lhash_test.cc
index cbeb15b..cc146e8 100644
--- a/crypto/lhash/lhash_test.cc
+++ b/crypto/lhash/lhash_test.cc
@@ -16,7 +16,6 @@
 #define _POSIX_C_SOURCE 201410L
 #endif
 
-#include <openssl/crypto.h>
 #include <openssl/lhash.h>
 
 #include <stdio.h>
@@ -30,6 +29,8 @@
 #include <utility>
 #include <vector>
 
+#include <gtest/gtest.h>
+
 
 static std::unique_ptr<char[]> RandString(void) {
   unsigned len = 1 + (rand() % 3);
@@ -57,14 +58,10 @@
   return iter->second.get();
 }
 
-int main(int argc, char **argv) {
-  CRYPTO_library_init();
-
+TEST(LHashTest, Basic) {
   std::unique_ptr<_LHASH, FreeLHASH> lh(
       lh_new((lhash_hash_func)lh_strhash, (lhash_cmp_func)strcmp));
-  if (!lh) {
-    return 1;
-  }
+  ASSERT_TRUE(lh);
 
   // lh is expected to store a canonical instance of each string. dummy_lh
   // mirrors what it stores for comparison. It also manages ownership of the
@@ -72,10 +69,7 @@
   std::map<std::string, std::unique_ptr<char[]>> dummy_lh;
 
   for (unsigned i = 0; i < 100000; i++) {
-    if (dummy_lh.size() != lh_num_items(lh.get())) {
-      fprintf(stderr, "Length mismatch\n");
-      return 1;
-    }
+    EXPECT_EQ(dummy_lh.size(), lh_num_items(lh.get()));
 
     // Check the entire contents and test |lh_doall_arg|. This takes O(N) time,
     // so only do it every few iterations.
@@ -98,10 +92,7 @@
                    &actual);
       std::sort(actual.begin(), actual.end());
 
-      if (expected != actual) {
-        fprintf(stderr, "Contents mismatch\n");
-        return 1;
-      }
+      EXPECT_EQ(expected, actual);
     }
 
     enum Action {
@@ -115,25 +106,15 @@
       case kRetrieve: {
         std::unique_ptr<char[]> key = RandString();
         void *value = lh_retrieve(lh.get(), key.get());
-        if (value != Lookup(&dummy_lh, key.get())) {
-          fprintf(stderr, "lh_retrieve failure\n");
-          return 1;
-        }
+        EXPECT_EQ(Lookup(&dummy_lh, key.get()), value);
         break;
       }
 
       case kInsert: {
         std::unique_ptr<char[]> key = RandString();
         void *previous;
-        if (!lh_insert(lh.get(), &previous, key.get())) {
-          return 1;
-        }
-
-        if (previous != Lookup(&dummy_lh, key.get())) {
-          fprintf(stderr, "lh_insert failure\n");
-          return 1;
-        }
-
+        ASSERT_TRUE(lh_insert(lh.get(), &previous, key.get()));
+        EXPECT_EQ(Lookup(&dummy_lh, key.get()), previous);
         dummy_lh[key.get()] = std::move(key);
         break;
       }
@@ -141,21 +122,10 @@
       case kDelete: {
         std::unique_ptr<char[]> key = RandString();
         void *value = lh_delete(lh.get(), key.get());
-
-        if (value != Lookup(&dummy_lh, key.get())) {
-          fprintf(stderr, "lh_delete failure\n");
-          return 1;
-        }
-
+        EXPECT_EQ(Lookup(&dummy_lh, key.get()), value);
         dummy_lh.erase(key.get());
         break;
       }
-
-      default:
-        abort();
     }
   }
-
-  printf("PASS\n");
-  return 0;
 }
diff --git a/crypto/pool/CMakeLists.txt b/crypto/pool/CMakeLists.txt
index fe55af2..6f2c784 100644
--- a/crypto/pool/CMakeLists.txt
+++ b/crypto/pool/CMakeLists.txt
@@ -7,14 +7,3 @@
 
   pool.c
 )
-
-add_executable(
-  pool_test
-
-  pool_test.cc
-
-  $<TARGET_OBJECTS:test_support>
-)
-
-target_link_libraries(pool_test crypto)
-add_dependencies(all_tests pool_test)
diff --git a/crypto/pool/pool_test.cc b/crypto/pool/pool_test.cc
index 72b8ce0..1bf9bd1 100644
--- a/crypto/pool/pool_test.cc
+++ b/crypto/pool/pool_test.cc
@@ -12,78 +12,47 @@
  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
 
-#include <stdio.h>
-#include <string.h>
+#include <gtest/gtest.h>
 
 #include <openssl/pool.h>
 
-#include "../internal.h"
+#include "../test/test_util.h"
 
 
-static bool TestUnpooled() {
+TEST(PoolTest, Unpooled) {
   static const uint8_t kData[4] = {1, 2, 3, 4};
   bssl::UniquePtr<CRYPTO_BUFFER> buf(
       CRYPTO_BUFFER_new(kData, sizeof(kData), nullptr));
-  if (!buf) {
-    return false;
-  }
+  ASSERT_TRUE(buf);
 
-  if (CRYPTO_BUFFER_len(buf.get()) != sizeof(kData) ||
-      OPENSSL_memcmp(kData, CRYPTO_BUFFER_data(buf.get()), sizeof(kData)) !=
-          0) {
-    fprintf(stderr, "CRYPTO_BUFFER corrupted data.\n");
-    return false;
-  }
+  EXPECT_EQ(Bytes(kData),
+            Bytes(CRYPTO_BUFFER_data(buf.get()), CRYPTO_BUFFER_len(buf.get())));
 
+  // Test that reference-counting works properly.
   CRYPTO_BUFFER_up_ref(buf.get());
   bssl::UniquePtr<CRYPTO_BUFFER> buf2(buf.get());
-
-  return true;
 }
 
-static bool TestEmpty() {
+TEST(PoolTest, Empty) {
   bssl::UniquePtr<CRYPTO_BUFFER> buf(CRYPTO_BUFFER_new(nullptr, 0, nullptr));
-  if (!buf) {
-    return false;
-  }
+  ASSERT_TRUE(buf);
 
-  return true;
+  EXPECT_EQ(Bytes(""),
+            Bytes(CRYPTO_BUFFER_data(buf.get()), CRYPTO_BUFFER_len(buf.get())));
 }
 
-static bool TestPool() {
+TEST(PoolTest, Pooled) {
   bssl::UniquePtr<CRYPTO_BUFFER_POOL> pool(CRYPTO_BUFFER_POOL_new());
-  if (!pool) {
-    return false;
-  }
+  ASSERT_TRUE(pool);
 
   static const uint8_t kData[4] = {1, 2, 3, 4};
   bssl::UniquePtr<CRYPTO_BUFFER> buf(
       CRYPTO_BUFFER_new(kData, sizeof(kData), pool.get()));
-  if (!buf) {
-    return false;
-  }
+  ASSERT_TRUE(buf);
 
   bssl::UniquePtr<CRYPTO_BUFFER> buf2(
       CRYPTO_BUFFER_new(kData, sizeof(kData), pool.get()));
-  if (!buf2) {
-    return false;
-  }
+  ASSERT_TRUE(buf2);
 
-  if (buf.get() != buf2.get()) {
-    fprintf(stderr, "CRYPTO_BUFFER_POOL did not dedup data.\n");
-    return false;
-  }
-
-  return true;
-}
-
-int main(int argc, char **argv) {
-  if (!TestUnpooled() ||
-      !TestEmpty() ||
-      !TestPool()) {
-    return 1;
-  }
-
-  printf("PASS\n");
-  return 0;
+  EXPECT_EQ(buf.get(), buf2.get()) << "CRYPTO_BUFFER_POOL did not dedup data.";
 }
diff --git a/crypto/refcount_test.cc b/crypto/refcount_test.cc
index 97bfbd6..efa501a 100644
--- a/crypto/refcount_test.cc
+++ b/crypto/refcount_test.cc
@@ -14,46 +14,27 @@
 
 #include "internal.h"
 
-#include <stdio.h>
-
-#include <openssl/type_check.h>
+#include <gtest/gtest.h>
 
 
-int main(int argc, char **argv) {
+TEST(RefCountTest, Basic) {
   CRYPTO_refcount_t count = 0;
 
   CRYPTO_refcount_inc(&count);
-  if (count != 1) {
-    fprintf(stderr, "Incrementing reference count did not work.\n");
-    return 1;
-  }
-  if (!CRYPTO_refcount_dec_and_test_zero(&count) || count != 0) {
-    fprintf(stderr, "Decrementing reference count to zero did not work.\n");
-    return 1;
-  }
+  EXPECT_EQ(1u, count);
+
+  EXPECT_TRUE(CRYPTO_refcount_dec_and_test_zero(&count));
+  EXPECT_EQ(0u, count);
 
   count = CRYPTO_REFCOUNT_MAX;
   CRYPTO_refcount_inc(&count);
-  if (count != CRYPTO_REFCOUNT_MAX) {
-    fprintf(stderr, "Count did not saturate correctly when incrementing.\n");
-    return 1;
-  }
-  if (CRYPTO_refcount_dec_and_test_zero(&count) ||
-      count != CRYPTO_REFCOUNT_MAX) {
-    fprintf(stderr, "Count did not saturate correctly when decrementing.\n");
-    return 1;
-  }
+  EXPECT_EQ(CRYPTO_REFCOUNT_MAX, count)
+      << "Count did not saturate correctly when incrementing.";
+  EXPECT_FALSE(CRYPTO_refcount_dec_and_test_zero(&count));
+  EXPECT_EQ(CRYPTO_REFCOUNT_MAX, count)
+      << "Count did not saturate correctly when decrementing.";
 
   count = 2;
-  if (CRYPTO_refcount_dec_and_test_zero(&count)) {
-    fprintf(stderr, "Decrementing two resulted in zero!\n");
-    return 1;
-  }
-  if (count != 1) {
-    fprintf(stderr, "Decrementing two did not produce one!");
-    return 1;
-  }
-
-  printf("PASS\n");
-  return 0;
+  EXPECT_FALSE(CRYPTO_refcount_dec_and_test_zero(&count));
+  EXPECT_EQ(1u, count);
 }
diff --git a/util/all_tests.json b/util/all_tests.json
index 41cf230..7144917 100644
--- a/util/all_tests.json
+++ b/util/all_tests.json
@@ -34,7 +34,6 @@
 	["crypto/crypto_test"],
 	["crypto/ecdh/ecdh_test", "crypto/ecdh/ecdh_tests.txt"],
 	["crypto/evp/evp_test", "crypto/evp/evp_tests.txt"],
-	["crypto/evp/pbkdf_test"],
 	["crypto/fipsmodule/bn_test", "crypto/fipsmodule/bn/bn_tests.txt"],
 	["crypto/fipsmodule/ctrdrbg_vector_test", "crypto/fipsmodule/rand/ctrdrbg_vectors.txt"],
 	["crypto/fipsmodule/ecdsa_sign_test", "crypto/fipsmodule/ecdsa/ecdsa_sign_tests.txt"],
@@ -43,16 +42,12 @@
 	["crypto/fipsmodule/example_mul"],
 	["crypto/fipsmodule/gcm_test"],
 	["crypto/fipsmodule/p256-x86_64_test", "crypto/fipsmodule/ec/p256-x86_64_tests.txt"],
-	["crypto/hkdf/hkdf_test"],
 	["crypto/hmac_extra/hmac_test", "crypto/hmac_extra/hmac_tests.txt"],
-	["crypto/lhash/lhash_test"],
 	["crypto/obj/obj_test"],
 	["crypto/pkcs7/pkcs7_test"],
 	["crypto/pkcs8/pkcs12_test"],
 	["crypto/pkcs8/pkcs8_test"],
 	["crypto/poly1305/poly1305_test", "crypto/poly1305/poly1305_tests.txt"],
-	["crypto/pool/pool_test"],
-	["crypto/refcount_test"],
 	["crypto/thread_test"],
 	["crypto/x509v3/tab_test"],
 	["crypto/x509v3/v3name_test"],