diff --git a/drm/1.0/vts/functional/drm_hal_clearkey_test.cpp b/drm/1.0/vts/functional/drm_hal_clearkey_test.cpp
index a110eb1..4a1892b 100644
--- a/drm/1.0/vts/functional/drm_hal_clearkey_test.cpp
+++ b/drm/1.0/vts/functional/drm_hal_clearkey_test.cpp
@@ -89,10 +89,6 @@
     0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80,
     0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80};
 
-static const uint32_t k256SubSampleByteCount = 256;
-static const uint32_t k512SubSampleClearBytes = 512;
-static const uint32_t k512SubSampleEncryptedBytes = 512;
-
 class DrmHalClearkeyFactoryTest : public ::testing::VtsHalHidlTargetTestBase {
    public:
     virtual void SetUp() override {
@@ -349,8 +345,7 @@
  * Helper method to close a session
  */
 void DrmHalClearkeyPluginTest::closeSession(const SessionId& sessionId) {
-    auto result = drmPlugin->closeSession(sessionId);
-    EXPECT_EQ(Status::OK, result);
+    EXPECT_TRUE(drmPlugin->closeSession(sessionId).isOk());
 }
 
 /**
@@ -793,7 +788,7 @@
  */
 TEST_F(DrmHalClearkeyPluginTest, GenericEncryptNotSupported) {
     SessionId session = openSession();
-    ;
+
     hidl_vec<uint8_t> keyId = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
     hidl_vec<uint8_t> input = {1, 2, 3, 4, 5};
     hidl_vec<uint8_t> iv = std::vector<uint8_t>(AES_BLOCK_SIZE, 0);
@@ -822,7 +817,7 @@
 
 TEST_F(DrmHalClearkeyPluginTest, GenericSignNotSupported) {
     SessionId session = openSession();
-    ;
+
     hidl_vec<uint8_t> keyId = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
     hidl_vec<uint8_t> message = {1, 2, 3, 4, 5};
     auto res = drmPlugin->sign(session, keyId, message,
@@ -836,7 +831,7 @@
 
 TEST_F(DrmHalClearkeyPluginTest, GenericVerifyNotSupported) {
     SessionId session = openSession();
-    ;
+
     hidl_vec<uint8_t> keyId = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1};
     hidl_vec<uint8_t> message = {1, 2, 3, 4, 5};
     hidl_vec<uint8_t> signature = {0, 0, 0, 0, 0, 0, 0, 0,
@@ -926,8 +921,7 @@
  */
 TEST_F(DrmHalClearkeyPluginTest, SetMediaDrmSession) {
     auto sessionId = openSession();
-    Status status = cryptoPlugin->setMediaDrmSession(sessionId);
-    EXPECT_EQ(Status::OK, status);
+    EXPECT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
     closeSession(sessionId);
 }
 
@@ -948,8 +942,7 @@
  */
 TEST_F(DrmHalClearkeyPluginTest, SetMediaDrmSessionEmptySession) {
     SessionId sessionId;
-    Status status = cryptoPlugin->setMediaDrmSession(sessionId);
-    EXPECT_EQ(Status::OK, status);
+    EXPECT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
 }
 
 /**
@@ -1131,18 +1124,17 @@
 TEST_F(DrmHalClearkeyDecryptTest, ClearSegmentTest) {
     vector<uint8_t> iv(AES_BLOCK_SIZE, 0);
     const Pattern noPattern = {0, 0};
+    const uint32_t kByteCount = 256;
     const vector<SubSample> subSamples = {
-        {.numBytesOfClearData = k256SubSampleByteCount,
+        {.numBytesOfClearData = kByteCount,
          .numBytesOfEncryptedData = 0}};
     auto sessionId = openSession();
     loadKeys(sessionId);
-
-    Status status = cryptoPlugin->setMediaDrmSession(sessionId);
-    EXPECT_EQ(Status::OK, status);
+    EXPECT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
 
     uint32_t byteCount = decrypt(Mode::UNENCRYPTED, &iv[0], subSamples,
             noPattern, Status::OK);
-    EXPECT_EQ(k256SubSampleByteCount, byteCount);
+    EXPECT_EQ(kByteCount, byteCount);
 
     closeSession(sessionId);
 }
@@ -1154,18 +1146,18 @@
 TEST_F(DrmHalClearkeyDecryptTest, EncryptedAesCtrSegmentTest) {
     vector<uint8_t> iv(AES_BLOCK_SIZE, 0);
     const Pattern noPattern = {0, 0};
+    const uint32_t kClearBytes = 512;
+    const uint32_t kEncryptedBytes = 512;
     const vector<SubSample> subSamples = {
-        {.numBytesOfClearData = k512SubSampleClearBytes,
-         .numBytesOfEncryptedData = k512SubSampleEncryptedBytes}};
+        {.numBytesOfClearData = kClearBytes,
+         .numBytesOfEncryptedData = kEncryptedBytes}};
     auto sessionId = openSession();
     loadKeys(sessionId);
-
-    Status status = cryptoPlugin->setMediaDrmSession(sessionId);
-    EXPECT_EQ(Status::OK, status);
+    EXPECT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
 
     uint32_t byteCount = decrypt(Mode::AES_CTR, &iv[0], subSamples,
             noPattern, Status::OK);
-    EXPECT_EQ(k512SubSampleClearBytes + k512SubSampleEncryptedBytes, byteCount);
+    EXPECT_EQ(kClearBytes + kEncryptedBytes, byteCount);
 
     closeSession(sessionId);
 }
@@ -1177,12 +1169,10 @@
     vector<uint8_t> iv(AES_BLOCK_SIZE, 0);
     const Pattern noPattern = {0, 0};
     const vector<SubSample> subSamples = {
-        {.numBytesOfClearData = k256SubSampleByteCount,
-         .numBytesOfEncryptedData = k256SubSampleByteCount}};
+        {.numBytesOfClearData = 256,
+         .numBytesOfEncryptedData = 256}};
     auto sessionId = openSession();
-
-    Status status = cryptoPlugin->setMediaDrmSession(sessionId);
-    EXPECT_EQ(Status::OK, status);
+    EXPECT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
 
     uint32_t byteCount = decrypt(Mode::AES_CTR, &iv[0], subSamples,
             noPattern, Status::ERROR_DRM_NO_LICENSE);
@@ -1207,9 +1197,9 @@
             EXPECT_EQ(Status::OK, status);
             EXPECT_EQ(0u, myKeySetId.size());
         });
-    ASSERT_OK(res);
+    EXPECT_OK(res);
 
-    ASSERT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
+    EXPECT_TRUE(cryptoPlugin->setMediaDrmSession(sessionId).isOk());
 
     uint32_t byteCount = decrypt(Mode::AES_CTR, &iv[0], subSamples,
             noPattern, Status::ERROR_DRM_NO_LICENSE);
@@ -1224,9 +1214,11 @@
 TEST_F(DrmHalClearkeyDecryptTest, DecryptWithEmptyKey) {
     vector<uint8_t> iv(AES_BLOCK_SIZE, 0);
     const Pattern noPattern = {0, 0};
+    const uint32_t kClearBytes = 512;
+    const uint32_t kEncryptedBytes = 512;
     const vector<SubSample> subSamples = {
-        {.numBytesOfClearData = k512SubSampleClearBytes,
-         .numBytesOfEncryptedData = k512SubSampleEncryptedBytes}};
+        {.numBytesOfClearData = kClearBytes,
+         .numBytesOfEncryptedData = kEncryptedBytes}};
 
     // base 64 encoded JSON response string, must not contain padding character '='
     const hidl_string emptyKeyResponse =
@@ -1259,9 +1251,11 @@
 TEST_F(DrmHalClearkeyDecryptTest, DecryptWithKeyTooLong) {
     vector<uint8_t> iv(AES_BLOCK_SIZE, 0);
     const Pattern noPattern = {0, 0};
+    const uint32_t kClearBytes = 512;
+    const uint32_t kEncryptedBytes = 512;
     const vector<SubSample> subSamples = {
-        {.numBytesOfClearData = k512SubSampleClearBytes,
-         .numBytesOfEncryptedData = k512SubSampleEncryptedBytes}};
+        {.numBytesOfClearData = kClearBytes,
+         .numBytesOfEncryptedData = kEncryptedBytes}};
 
     // base 64 encoded JSON response string, must not contain padding character '='
     const hidl_string keyTooLongResponse =