diff --git a/confirmationui/1.0/vts/functional/Android.bp b/confirmationui/1.0/vts/functional/Android.bp
index fd088cd..c8b522c 100644
--- a/confirmationui/1.0/vts/functional/Android.bp
+++ b/confirmationui/1.0/vts/functional/Android.bp
@@ -27,5 +27,5 @@
         "libcn-cbor",
         "android.hardware.confirmationui-support-lib",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/confirmationui/1.0/vts/functional/VtsHalConfirmationUIV1_0TargetTest.cpp b/confirmationui/1.0/vts/functional/VtsHalConfirmationUIV1_0TargetTest.cpp
index fb01ad0..d953ab0 100644
--- a/confirmationui/1.0/vts/functional/VtsHalConfirmationUIV1_0TargetTest.cpp
+++ b/confirmationui/1.0/vts/functional/VtsHalConfirmationUIV1_0TargetTest.cpp
@@ -26,8 +26,12 @@
 #include <android/hardware/confirmationui/1.0/types.h>
 #include <android/hardware/confirmationui/support/confirmationui_utils.h>
 
+#include <gtest/gtest.h>
+
 #include <VtsHalHidlTargetCallbackBase.h>
-#include <VtsHalHidlTargetTestBase.h>
+
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include <openssl/hmac.h>
 #include <openssl/sha.h>
@@ -199,43 +203,18 @@
     }
 };
 
-class ConfirmationUIHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static ConfirmationUIHidlEnvironment* Instance() {
-        static ConfirmationUIHidlEnvironment* instance = new ConfirmationUIHidlEnvironment;
-        return instance;
-    }
-
-    void registerTestServices() override { registerTestService<IConfirmationUI>(); }
-
-   private:
-    ConfirmationUIHidlEnvironment(){};
-
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(ConfirmationUIHidlEnvironment);
-};
-
-class ConfirmationUIHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
-    void TearDown() override { confirmator().abort(); }
-
-    static void SetUpTestCase() {
-        string service_name =
-            ConfirmationUIHidlEnvironment::Instance()->getServiceName<IConfirmationUI>();
-        confirmator_ = IConfirmationUI::getService(service_name);
+class ConfirmationUIHidlTest : public ::testing::TestWithParam<std::string> {
+  public:
+    void TearDown() override { confirmator_->abort(); }
+    void SetUp() override {
+        confirmator_ = IConfirmationUI::getService(GetParam());
         ASSERT_NE(nullptr, confirmator_.get());
     }
 
-    static void TearDownTestCase() { confirmator_.clear(); }
-
-    static IConfirmationUI& confirmator() { return *confirmator_; }
-
-   private:
-    static sp<IConfirmationUI> confirmator_;
+  protected:
+    sp<IConfirmationUI> confirmator_;
 };
 
-sp<IConfirmationUI> ConfirmationUIHidlTest::confirmator_;
-
 #define ASSERT_HAL_CALL(expected, call)                               \
     {                                                                 \
         auto result = call;                                           \
@@ -250,17 +229,17 @@
 typedef std::unique_ptr<cn_cbor, CnCborDeleter> CnCborPtr;
 
 // Simulates the User taping Ok
-TEST_F(ConfirmationUIHidlTest, UserOkTest) {
+TEST_P(ConfirmationUIHidlTest, UserOkTest) {
     static constexpr char test_prompt[] = "Me first, gimme gimme!";
     static constexpr uint8_t test_extra[] = {0x1, 0x2, 0x3};
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 
-    ASSERT_HAL_CALL(ResponseCode::OK, confirmator().deliverSecureInputEvent(
-                                          makeTestToken(TestModeCommands::OK_EVENT)));
+    ASSERT_HAL_CALL(ResponseCode::OK, confirmator_->deliverSecureInputEvent(
+                                              makeTestToken(TestModeCommands::OK_EVENT)));
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::OK, result.args->error_);
@@ -294,40 +273,40 @@
 }
 
 // Initiates a confirmation prompt with a message that is too long
-TEST_F(ConfirmationUIHidlTest, MessageTooLongTest) {
+TEST_P(ConfirmationUIHidlTest, MessageTooLongTest) {
     static constexpr uint8_t test_extra[static_cast<uint32_t>(MessageSize::MAX)] = {};
     static constexpr char test_prompt[] = "D\'oh!";
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + sizeof(test_extra));
     ASSERT_HAL_CALL(ResponseCode::UIErrorMessageTooLong,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 }
 
 // If the message gets very long some HAL implementations might fail even before the message
 // reaches the trusted app implementation. But the HAL must still diagnose the correct error.
-TEST_F(ConfirmationUIHidlTest, MessageWayTooLongTest) {
+TEST_P(ConfirmationUIHidlTest, MessageWayTooLongTest) {
     static constexpr uint8_t test_extra[static_cast<uint32_t>(MessageSize::MAX) * 10] = {};
     static constexpr char test_prompt[] = "D\'oh!";
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + sizeof(test_extra));
     ASSERT_HAL_CALL(ResponseCode::UIErrorMessageTooLong,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 }
 
 // Simulates the User tapping the Cancel
-TEST_F(ConfirmationUIHidlTest, UserCancelTest) {
+TEST_P(ConfirmationUIHidlTest, UserCancelTest) {
     static constexpr char test_prompt[] = "Me first, gimme gimme!";
     static constexpr uint8_t test_extra[] = {0x1, 0x2, 0x3};
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 
-    ASSERT_HAL_CALL(ResponseCode::OK, confirmator().deliverSecureInputEvent(
-                                          makeTestToken(TestModeCommands::CANCEL_EVENT)));
+    ASSERT_HAL_CALL(ResponseCode::OK, confirmator_->deliverSecureInputEvent(
+                                              makeTestToken(TestModeCommands::CANCEL_EVENT)));
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::Canceled, result.args->error_);
@@ -337,16 +316,16 @@
 }
 
 // Simulates the framework cancelling an ongoing prompt
-TEST_F(ConfirmationUIHidlTest, AbortTest) {
+TEST_P(ConfirmationUIHidlTest, AbortTest) {
     static constexpr char test_prompt[] = "Me first, gimme gimme!";
     static constexpr uint8_t test_extra[] = {0x1, 0x2, 0x3};
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 
-    confirmator().abort();
+    confirmator_->abort();
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::Aborted, result.args->error_);
@@ -356,7 +335,7 @@
 
 // Tests if the confirmation dialog can successfully render 100 'W' characters as required by
 // the design guidelines.
-TEST_F(ConfirmationUIHidlTest, PortableMessageTest1) {
+TEST_P(ConfirmationUIHidlTest, PortableMessageTest1) {
     static constexpr char test_prompt[] =
             "WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW"
             "WWWWWWWWWWWWWW";
@@ -365,9 +344,9 @@
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 
-    confirmator().abort();
+    confirmator_->abort();
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::Aborted, result.args->error_);
@@ -377,7 +356,7 @@
 
 // Tests if the confirmation dialog can successfully render 100 'W' characters as required by
 // the design guidelines in magnified mode.
-TEST_F(ConfirmationUIHidlTest, PortableMessageTest1Magnified) {
+TEST_P(ConfirmationUIHidlTest, PortableMessageTest1Magnified) {
     static constexpr char test_prompt[] =
             "WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW"
             "WWWWWWWWWWWWWW";
@@ -386,10 +365,10 @@
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en",
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en",
                                                          {UIOption::AccessibilityMagnified}));
 
-    confirmator().abort();
+    confirmator_->abort();
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::Aborted, result.args->error_);
@@ -399,7 +378,7 @@
 
 // Tests if the confirmation dialog can successfully render 8 groups of 12 'W' characters as
 // required by the design guidelines.
-TEST_F(ConfirmationUIHidlTest, PortableMessageTest2) {
+TEST_P(ConfirmationUIHidlTest, PortableMessageTest2) {
     static constexpr char test_prompt[] =
             "WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW "
             "WWWWWWWWWWWW WWWWWWWWWWWW";
@@ -408,9 +387,9 @@
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 
-    confirmator().abort();
+    confirmator_->abort();
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::Aborted, result.args->error_);
@@ -420,7 +399,7 @@
 
 // Tests if the confirmation dialog can successfully render 8 groups of 12 'W' characters as
 // required by the design guidelines in magnified mode.
-TEST_F(ConfirmationUIHidlTest, PortableMessageTest2Magnified) {
+TEST_P(ConfirmationUIHidlTest, PortableMessageTest2Magnified) {
     static constexpr char test_prompt[] =
             "WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW WWWWWWWWWWWW "
             "WWWWWWWWWWWW WWWWWWWWWWWW";
@@ -429,10 +408,10 @@
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::OK,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en",
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en",
                                                          {UIOption::AccessibilityMagnified}));
 
-    confirmator().abort();
+    confirmator_->abort();
 
     auto result = conf_cb->WaitForCallback();
     ASSERT_EQ(ResponseCode::Aborted, result.args->error_);
@@ -442,19 +421,19 @@
 
 // Passing malformed UTF-8 to the confirmation UI
 // This test passes a string that ends in the middle of a multibyte character
-TEST_F(ConfirmationUIHidlTest, MalformedUTF8Test1) {
+TEST_P(ConfirmationUIHidlTest, MalformedUTF8Test1) {
     static constexpr char test_prompt[] = {char(0xc0), 0};
     static constexpr uint8_t test_extra[] = {0x1, 0x2, 0x3};
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::UIErrorMalformedUTF8Encoding,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 }
 
 // Passing malformed UTF-8 to the confirmation UI
 // This test passes a string with a 5-byte character.
-TEST_F(ConfirmationUIHidlTest, MalformedUTF8Test2) {
+TEST_P(ConfirmationUIHidlTest, MalformedUTF8Test2) {
     static constexpr char test_prompt[] = {char(0xf8), char(0x82), char(0x82),
                                            char(0x82), char(0x82), 0};
     static constexpr uint8_t test_extra[] = {0x1, 0x2, 0x3};
@@ -462,19 +441,19 @@
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::UIErrorMalformedUTF8Encoding,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 }
 
 // Passing malformed UTF-8 to the confirmation UI
 // This test passes a string with a 2-byte character followed by a stray non UTF-8 character.
-TEST_F(ConfirmationUIHidlTest, MalformedUTF8Test3) {
+TEST_P(ConfirmationUIHidlTest, MalformedUTF8Test3) {
     static constexpr char test_prompt[] = {char(0xc0), char(0x82), char(0x83), 0};
     static constexpr uint8_t test_extra[] = {0x1, 0x2, 0x3};
     sp<ConfirmationTestCallback> conf_cb = new ConfirmationTestCallback;
     hidl_string prompt_text(test_prompt);
     hidl_vec<uint8_t> extra(test_extra, test_extra + 3);
     ASSERT_HAL_CALL(ResponseCode::UIErrorMalformedUTF8Encoding,
-                    confirmator().promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
+                    confirmator_->promptUserConfirmation(conf_cb, prompt_text, extra, "en", {}));
 }
 
 // Test the implementation of HMAC SHA 256 against a golden blob.
@@ -494,16 +473,13 @@
     ASSERT_EQ(expected, result.value());
 }
 
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, ConfirmationUIHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IConfirmationUI::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
 }  // namespace test
 }  // namespace V1_0
 }  // namespace confirmationui
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    ::testing::InitGoogleTest(&argc, argv);
-    std::vector<std::string> positional_args;
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}