diff --git a/graphics/mapper/2.0/utils/vts/MapperVts.cpp b/graphics/mapper/2.0/utils/vts/MapperVts.cpp
index d08ac56..d4e4dde 100644
--- a/graphics/mapper/2.0/utils/vts/MapperVts.cpp
+++ b/graphics/mapper/2.0/utils/vts/MapperVts.cpp
@@ -16,8 +16,6 @@
 
 #include <mapper-vts/2.0/MapperVts.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
 namespace android {
 namespace hardware {
 namespace graphics {
@@ -30,10 +28,10 @@
 }
 
 void Gralloc::init(const std::string& allocatorServiceName, const std::string& mapperServiceName) {
-    mAllocator = ::testing::VtsHalHidlTargetTestBase::getService<IAllocator>(allocatorServiceName);
+    mAllocator = IAllocator::getService(allocatorServiceName);
     ASSERT_NE(nullptr, mAllocator.get()) << "failed to get allocator service";
 
-    mMapper = ::testing::VtsHalHidlTargetTestBase::getService<IMapper>(mapperServiceName);
+    mMapper = IMapper::getService(mapperServiceName);
     ASSERT_NE(nullptr, mMapper.get()) << "failed to get mapper service";
     ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
 }
diff --git a/graphics/mapper/2.0/utils/vts/include/mapper-vts/2.0/MapperVts.h b/graphics/mapper/2.0/utils/vts/include/mapper-vts/2.0/MapperVts.h
index 6c2c9a6..fc8a102 100644
--- a/graphics/mapper/2.0/utils/vts/include/mapper-vts/2.0/MapperVts.h
+++ b/graphics/mapper/2.0/utils/vts/include/mapper-vts/2.0/MapperVts.h
@@ -22,6 +22,7 @@
 
 #include <android/hardware/graphics/allocator/2.0/IAllocator.h>
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
+#include <gtest/gtest.h>
 #include <utils/StrongPointer.h>
 
 namespace android {
diff --git a/graphics/mapper/2.0/vts/functional/Android.bp b/graphics/mapper/2.0/vts/functional/Android.bp
index 853c2a3..a055b61 100644
--- a/graphics/mapper/2.0/vts/functional/Android.bp
+++ b/graphics/mapper/2.0/vts/functional/Android.bp
@@ -24,5 +24,5 @@
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@2.0-vts",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp b/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp
index 5ec0af2..b079a4b 100644
--- a/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp
+++ b/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp
@@ -20,8 +20,10 @@
 #include <thread>
 #include <vector>
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/2.0/MapperVts.h>
 
 namespace android {
@@ -35,28 +37,12 @@
 using android::hardware::graphics::common::V1_0::BufferUsage;
 using android::hardware::graphics::common::V1_0::PixelFormat;
 
-// Test environment for graphics.mapper.
-class GraphicsMapperHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsMapperHidlEnvironment* Instance() {
-        static GraphicsMapperHidlEnvironment* instance = new GraphicsMapperHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override {
-        registerTestService<IAllocator>();
-        registerTestService<IMapper>();
-    }
-};
-
-class GraphicsMapperHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsMapperHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+  protected:
     void SetUp() override {
-        ASSERT_NO_FATAL_FAILURE(
-            mGralloc = std::make_unique<Gralloc>(
-                GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
-                GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                     std::get<1>(GetParam())));
 
         mDummyDescriptorInfo.width = 64;
         mDummyDescriptorInfo.height = 64;
@@ -75,14 +61,14 @@
 /**
  * Test IAllocator::dumpDebugInfo by calling it.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorDumpDebugInfo) {
+TEST_P(GraphicsMapperHidlTest, AllocatorDumpDebugInfo) {
     mGralloc->dumpDebugInfo();
 }
 
 /**
  * Test IAllocator::allocate with valid buffer descriptors.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocate) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocate) {
     BufferDescriptor descriptor;
     ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
 
@@ -105,7 +91,7 @@
 /**
  * Test IAllocator::allocate with invalid buffer descriptors.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocateNegative) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateNegative) {
     // this assumes any valid descriptor is non-empty
     BufferDescriptor descriptor;
     mGralloc->getAllocator()->allocate(descriptor, 1,
@@ -117,7 +103,7 @@
 /**
  * Test IAllocator::allocate does not leak.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocateNoLeak) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateNoLeak) {
     auto info = mDummyDescriptorInfo;
     info.width = 1024;
     info.height = 1024;
@@ -131,7 +117,7 @@
 /**
  * Test that IAllocator::allocate is thread-safe.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
     BufferDescriptor descriptor;
     ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
 
@@ -161,14 +147,14 @@
 /**
  * Test IMapper::createDescriptor with valid descriptor info.
  */
-TEST_F(GraphicsMapperHidlTest, CreateDescriptorBasic) {
+TEST_P(GraphicsMapperHidlTest, CreateDescriptorBasic) {
     ASSERT_NO_FATAL_FAILURE(mGralloc->createDescriptor(mDummyDescriptorInfo));
 }
 
 /**
  * Test IMapper::createDescriptor with invalid descriptor info.
  */
-TEST_F(GraphicsMapperHidlTest, CreateDescriptorNegative) {
+TEST_P(GraphicsMapperHidlTest, CreateDescriptorNegative) {
     auto info = mDummyDescriptorInfo;
     info.width = 0;
     mGralloc->getMapper()->createDescriptor(info, [&](const auto& tmpError, const auto&) {
@@ -179,7 +165,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer with allocated buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferBasic) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferBasic) {
     const native_handle_t* bufferHandle;
     ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
     ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
@@ -188,7 +174,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer with cloned buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferClone) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferClone) {
     const native_handle_t* clonedBufferHandle;
     ASSERT_NO_FATAL_FAILURE(clonedBufferHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
 
@@ -206,7 +192,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer cross mapper instances.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferSingleton) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferSingleton) {
     const native_handle_t* rawHandle;
     ASSERT_NO_FATAL_FAILURE(rawHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
 
@@ -218,10 +204,8 @@
 
     // free the imported handle with another mapper
     std::unique_ptr<Gralloc> anotherGralloc;
-    ASSERT_NO_FATAL_FAILURE(
-        anotherGralloc = std::make_unique<Gralloc>(
-            GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
-            GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+    ASSERT_NO_FATAL_FAILURE(anotherGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                       std::get<1>(GetParam())));
     Error error = mGralloc->getMapper()->freeBuffer(importedHandle);
     ASSERT_EQ(Error::NONE, error);
 
@@ -231,7 +215,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer do not leak.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferNoLeak) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferNoLeak) {
     auto info = mDummyDescriptorInfo;
     info.width = 1024;
     info.height = 1024;
@@ -245,7 +229,7 @@
 /**
  * Test IMapper::importBuffer with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ImportBufferNegative) {
+TEST_P(GraphicsMapperHidlTest, ImportBufferNegative) {
     native_handle_t* invalidHandle = nullptr;
     mGralloc->getMapper()->importBuffer(invalidHandle, [&](const auto& tmpError, const auto&) {
         EXPECT_EQ(Error::BAD_BUFFER, tmpError)
@@ -263,7 +247,7 @@
 /**
  * Test IMapper::freeBuffer with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, FreeBufferNegative) {
+TEST_P(GraphicsMapperHidlTest, FreeBufferNegative) {
     native_handle_t* invalidHandle = nullptr;
     Error error = mGralloc->getMapper()->freeBuffer(invalidHandle);
     EXPECT_EQ(Error::BAD_BUFFER, error) << "freeBuffer with nullptr did not fail with BAD_BUFFER";
@@ -286,7 +270,7 @@
 /**
  * Test IMapper::lock and IMapper::unlock.
  */
-TEST_F(GraphicsMapperHidlTest, LockUnlockBasic) {
+TEST_P(GraphicsMapperHidlTest, LockUnlockBasic) {
     const auto& info = mDummyDescriptorInfo;
 
     const native_handle_t* bufferHandle;
@@ -332,7 +316,7 @@
  * Test IMapper::lockYCbCr.  This locks a YV12 buffer, and makes sure we can
  * write to and read from it.
  */
-TEST_F(GraphicsMapperHidlTest, LockYCbCrBasic) {
+TEST_P(GraphicsMapperHidlTest, LockYCbCrBasic) {
     auto info = mDummyDescriptorInfo;
     info.format = PixelFormat::YV12;
 
@@ -391,7 +375,7 @@
 /**
  * Test IMapper::unlock with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, UnlockNegative) {
+TEST_P(GraphicsMapperHidlTest, UnlockNegative) {
     native_handle_t* invalidHandle = nullptr;
     mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
         EXPECT_EQ(Error::BAD_BUFFER, tmpError)
@@ -426,6 +410,14 @@
 #endif
 }
 
+INSTANTIATE_TEST_CASE_P(
+        PerInstance, GraphicsMapperHidlTest,
+        testing::Combine(
+                testing::ValuesIn(
+                        android::hardware::getAllHalInstanceNames(IAllocator::descriptor)),
+                testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMapper::descriptor))),
+        android::hardware::PrintInstanceTupleNameToString<>);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_0
@@ -433,13 +425,3 @@
 }  // namespace graphics
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::mapper::V2_0::vts::GraphicsMapperHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsMapperHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsMapperHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
diff --git a/graphics/mapper/2.1/utils/vts/Android.bp b/graphics/mapper/2.1/utils/vts/Android.bp
index ca02aad..abbe50a 100644
--- a/graphics/mapper/2.1/utils/vts/Android.bp
+++ b/graphics/mapper/2.1/utils/vts/Android.bp
@@ -16,14 +16,13 @@
 
 cc_library_static {
     name: "android.hardware.graphics.mapper@2.1-vts",
-    defaults: ["hidl_defaults"],
+    defaults: ["hidl_defaults", "VtsHalTargetTestDefaults"],
     srcs: ["MapperVts.cpp"],
     cflags: [
         "-O0",
         "-g",
     ],
     static_libs: [
-        "VtsHalHidlTargetTestBase",
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@2.0-vts",
diff --git a/graphics/mapper/2.1/utils/vts/MapperVts.cpp b/graphics/mapper/2.1/utils/vts/MapperVts.cpp
index 36f9cbb..239de74 100644
--- a/graphics/mapper/2.1/utils/vts/MapperVts.cpp
+++ b/graphics/mapper/2.1/utils/vts/MapperVts.cpp
@@ -16,8 +16,6 @@
 
 #include <mapper-vts/2.1/MapperVts.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
 namespace android {
 namespace hardware {
 namespace graphics {
diff --git a/graphics/mapper/2.1/vts/functional/Android.bp b/graphics/mapper/2.1/vts/functional/Android.bp
index afd8e7f..bb76c74 100644
--- a/graphics/mapper/2.1/vts/functional/Android.bp
+++ b/graphics/mapper/2.1/vts/functional/Android.bp
@@ -26,5 +26,5 @@
         "android.hardware.graphics.mapper@2.0-vts",
         "android.hardware.graphics.mapper@2.1-vts",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp b/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp
index 5e7cf93..1185945 100644
--- a/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp
+++ b/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp
@@ -16,9 +16,11 @@
 
 #define LOG_TAG "VtsHalGraphicsMapperV2_1TargetTest"
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/graphics/mapper/2.1/IMapper.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/2.1/MapperVts.h>
 
 namespace android {
@@ -34,28 +36,12 @@
 using android::hardware::graphics::common::V1_1::PixelFormat;
 using V2_0::Error;
 
-// Test environment for graphics.mapper.
-class GraphicsMapperHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsMapperHidlEnvironment* Instance() {
-        static GraphicsMapperHidlEnvironment* instance = new GraphicsMapperHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override {
-        registerTestService<IAllocator>();
-        registerTestService<IMapper>();
-    }
-};
-
-class GraphicsMapperHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsMapperHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+  protected:
     void SetUp() override {
-        ASSERT_NO_FATAL_FAILURE(
-            mGralloc = std::make_unique<Gralloc>(
-                GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
-                GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                     std::get<1>(GetParam())));
 
         mDummyDescriptorInfo.width = 64;
         mDummyDescriptorInfo.height = 64;
@@ -74,7 +60,7 @@
 /**
  * Test that IMapper::validateBufferSize works.
  */
-TEST_F(GraphicsMapperHidlTest, ValidateBufferSizeBasic) {
+TEST_P(GraphicsMapperHidlTest, ValidateBufferSizeBasic) {
     const native_handle_t* bufferHandle;
     uint32_t stride;
     ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true, &stride));
@@ -87,7 +73,7 @@
 /**
  * Test IMapper::validateBufferSize with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ValidateBufferSizeBadBuffer) {
+TEST_P(GraphicsMapperHidlTest, ValidateBufferSizeBadBuffer) {
     native_handle_t* invalidHandle = nullptr;
     Error ret = mGralloc->getMapper()->validateBufferSize(invalidHandle, mDummyDescriptorInfo,
                                                           mDummyDescriptorInfo.width);
@@ -114,7 +100,7 @@
 /**
  * Test IMapper::validateBufferSize with invalid descriptor and/or stride.
  */
-TEST_F(GraphicsMapperHidlTest, ValidateBufferSizeBadValue) {
+TEST_P(GraphicsMapperHidlTest, ValidateBufferSizeBadValue) {
     auto info = mDummyDescriptorInfo;
     info.width = 1024;
     info.height = 1024;
@@ -161,7 +147,7 @@
 /**
  * Test IMapper::getTransportSize.
  */
-TEST_F(GraphicsMapperHidlTest, GetTransportSizeBasic) {
+TEST_P(GraphicsMapperHidlTest, GetTransportSizeBasic) {
     const native_handle_t* bufferHandle;
     uint32_t numFds;
     uint32_t numInts;
@@ -173,7 +159,7 @@
 /**
  * Test IMapper::getTransportSize with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, GetTransportSizeBadBuffer) {
+TEST_P(GraphicsMapperHidlTest, GetTransportSizeBadBuffer) {
     native_handle_t* invalidHandle = nullptr;
     mGralloc->getMapper()->getTransportSize(
         invalidHandle, [&](const auto& tmpError, const auto&, const auto&) {
@@ -203,14 +189,14 @@
 /**
  * Test IMapper::createDescriptor with valid descriptor info.
  */
-TEST_F(GraphicsMapperHidlTest, CreateDescriptor_2_1Basic) {
+TEST_P(GraphicsMapperHidlTest, CreateDescriptor_2_1Basic) {
     ASSERT_NO_FATAL_FAILURE(mGralloc->createDescriptor(mDummyDescriptorInfo));
 }
 
 /**
  * Test IMapper::createDescriptor with invalid descriptor info.
  */
-TEST_F(GraphicsMapperHidlTest, CreateDescriptor_2_1Negative) {
+TEST_P(GraphicsMapperHidlTest, CreateDescriptor_2_1Negative) {
     auto info = mDummyDescriptorInfo;
     info.width = 0;
     mGralloc->getMapper()->createDescriptor_2_1(info, [&](const auto& tmpError, const auto&) {
@@ -218,22 +204,18 @@
     });
 }
 
+INSTANTIATE_TEST_CASE_P(
+        PerInstance, GraphicsMapperHidlTest,
+        testing::Combine(
+                testing::ValuesIn(
+                        android::hardware::getAllHalInstanceNames(IAllocator::descriptor)),
+                testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMapper::descriptor))),
+        android::hardware::PrintInstanceTupleNameToString<>);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_1
 }  // namespace mapper
 }  // namespace graphics
 }  // namespace hardware
-}  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::mapper::V2_1::vts::GraphicsMapperHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsMapperHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsMapperHidlEnvironment::Instance()->init(&argc, argv);
-
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-
-    return status;
-}
+}  // namespace android
\ No newline at end of file
diff --git a/graphics/mapper/3.0/utils/vts/MapperVts.cpp b/graphics/mapper/3.0/utils/vts/MapperVts.cpp
index c94e8db..de886a9 100644
--- a/graphics/mapper/3.0/utils/vts/MapperVts.cpp
+++ b/graphics/mapper/3.0/utils/vts/MapperVts.cpp
@@ -16,8 +16,6 @@
 
 #include <mapper-vts/3.0/MapperVts.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
 namespace android {
 namespace hardware {
 namespace graphics {
@@ -35,19 +33,19 @@
 }
 
 void Gralloc::init(const std::string& allocatorServiceName, const std::string& mapperServiceName) {
-    mAllocator = ::testing::VtsHalHidlTargetTestBase::getService<IAllocator>(allocatorServiceName);
+    mAllocator = IAllocator::getService(allocatorServiceName);
     ASSERT_NE(nullptr, mAllocator.get()) << "failed to get allocator service";
 
-    mMapper = ::testing::VtsHalHidlTargetTestBase::getService<IMapper>(mapperServiceName);
+    mMapper = IMapper::getService(mapperServiceName);
     ASSERT_NE(nullptr, mMapper.get()) << "failed to get mapper service";
     ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
 }
 
 void Gralloc::initNoErr(const std::string& allocatorServiceName,
                         const std::string& mapperServiceName) {
-    mAllocator = ::testing::VtsHalHidlTargetTestBase::getService<IAllocator>(allocatorServiceName);
+    mAllocator = IAllocator::getService(allocatorServiceName);
 
-    mMapper = ::testing::VtsHalHidlTargetTestBase::getService<IMapper>(mapperServiceName);
+    mMapper = IMapper::getService(mapperServiceName);
     if (mMapper.get()) {
         ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
     }
diff --git a/graphics/mapper/3.0/utils/vts/include/mapper-vts/3.0/MapperVts.h b/graphics/mapper/3.0/utils/vts/include/mapper-vts/3.0/MapperVts.h
index 1141a88..b2fbebb1 100644
--- a/graphics/mapper/3.0/utils/vts/include/mapper-vts/3.0/MapperVts.h
+++ b/graphics/mapper/3.0/utils/vts/include/mapper-vts/3.0/MapperVts.h
@@ -22,6 +22,7 @@
 
 #include <android/hardware/graphics/allocator/3.0/IAllocator.h>
 #include <android/hardware/graphics/mapper/3.0/IMapper.h>
+#include <gtest/gtest.h>
 #include <utils/StrongPointer.h>
 
 namespace android {
diff --git a/graphics/mapper/3.0/vts/functional/Android.bp b/graphics/mapper/3.0/vts/functional/Android.bp
index 77075a5..f01670e 100644
--- a/graphics/mapper/3.0/vts/functional/Android.bp
+++ b/graphics/mapper/3.0/vts/functional/Android.bp
@@ -26,5 +26,5 @@
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/mapper/3.0/vts/functional/VtsHalGraphicsMapperV3_0TargetTest.cpp b/graphics/mapper/3.0/vts/functional/VtsHalGraphicsMapperV3_0TargetTest.cpp
index ff73ecf..92b5994 100644
--- a/graphics/mapper/3.0/vts/functional/VtsHalGraphicsMapperV3_0TargetTest.cpp
+++ b/graphics/mapper/3.0/vts/functional/VtsHalGraphicsMapperV3_0TargetTest.cpp
@@ -20,8 +20,10 @@
 #include <thread>
 #include <vector>
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/3.0/MapperVts.h>
 
 namespace android {
@@ -35,28 +37,12 @@
 using android::hardware::graphics::common::V1_2::BufferUsage;
 using android::hardware::graphics::common::V1_2::PixelFormat;
 
-// Test environment for graphics.mapper.
-class GraphicsMapperHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsMapperHidlEnvironment* Instance() {
-        static GraphicsMapperHidlEnvironment* instance = new GraphicsMapperHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override {
-        registerTestService<IAllocator>();
-        registerTestService<IMapper>();
-    }
-};
-
-class GraphicsMapperHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsMapperHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+  protected:
     void SetUp() override {
-        ASSERT_NO_FATAL_FAILURE(
-            mGralloc = std::make_unique<Gralloc>(
-                GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
-                GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                     std::get<1>(GetParam())));
 
         mDummyDescriptorInfo.width = 64;
         mDummyDescriptorInfo.height = 64;
@@ -75,14 +61,14 @@
 /**
  * Test IAllocator::dumpDebugInfo by calling it.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorDumpDebugInfo) {
+TEST_P(GraphicsMapperHidlTest, AllocatorDumpDebugInfo) {
     mGralloc->dumpDebugInfo();
 }
 
 /**
  * Test IAllocator::allocate with valid buffer descriptors.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocate) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocate) {
     BufferDescriptor descriptor;
     ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
 
@@ -105,7 +91,7 @@
 /**
  * Test IAllocator::allocate with invalid buffer descriptors.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocateNegative) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateNegative) {
     // this assumes any valid descriptor is non-empty
     BufferDescriptor descriptor;
     mGralloc->getAllocator()->allocate(descriptor, 1,
@@ -117,7 +103,7 @@
 /**
  * Test IAllocator::allocate does not leak.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocateNoLeak) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateNoLeak) {
     auto info = mDummyDescriptorInfo;
     info.width = 1024;
     info.height = 1024;
@@ -131,7 +117,7 @@
 /**
  * Test that IAllocator::allocate is thread-safe.
  */
-TEST_F(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
     BufferDescriptor descriptor;
     ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
 
@@ -161,14 +147,14 @@
 /**
  * Test IMapper::createDescriptor with valid descriptor info.
  */
-TEST_F(GraphicsMapperHidlTest, CreateDescriptorBasic) {
+TEST_P(GraphicsMapperHidlTest, CreateDescriptorBasic) {
     ASSERT_NO_FATAL_FAILURE(mGralloc->createDescriptor(mDummyDescriptorInfo));
 }
 
 /**
  * Test IMapper::createDescriptor with invalid descriptor info.
  */
-TEST_F(GraphicsMapperHidlTest, CreateDescriptorNegative) {
+TEST_P(GraphicsMapperHidlTest, CreateDescriptorNegative) {
     auto info = mDummyDescriptorInfo;
     info.width = 0;
     mGralloc->getMapper()->createDescriptor(info, [&](const auto& tmpError, const auto&) {
@@ -179,7 +165,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer with allocated buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferBasic) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferBasic) {
     const native_handle_t* bufferHandle;
     ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
     ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
@@ -188,7 +174,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer with cloned buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferClone) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferClone) {
     const native_handle_t* clonedBufferHandle;
     ASSERT_NO_FATAL_FAILURE(clonedBufferHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
 
@@ -206,7 +192,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer cross mapper instances.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferSingleton) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferSingleton) {
     const native_handle_t* rawHandle;
     ASSERT_NO_FATAL_FAILURE(rawHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
 
@@ -218,10 +204,8 @@
 
     // free the imported handle with another mapper
     std::unique_ptr<Gralloc> anotherGralloc;
-    ASSERT_NO_FATAL_FAILURE(
-        anotherGralloc = std::make_unique<Gralloc>(
-            GraphicsMapperHidlEnvironment::Instance()->getServiceName<IAllocator>(),
-            GraphicsMapperHidlEnvironment::Instance()->getServiceName<IMapper>()));
+    ASSERT_NO_FATAL_FAILURE(anotherGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                       std::get<1>(GetParam())));
     Error error = mGralloc->getMapper()->freeBuffer(importedHandle);
     ASSERT_EQ(Error::NONE, error);
 
@@ -231,7 +215,7 @@
 /**
  * Test IMapper::importBuffer and IMapper::freeBuffer do not leak.
  */
-TEST_F(GraphicsMapperHidlTest, ImportFreeBufferNoLeak) {
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferNoLeak) {
     auto info = mDummyDescriptorInfo;
     info.width = 1024;
     info.height = 1024;
@@ -245,7 +229,7 @@
 /**
  * Test IMapper::importBuffer with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, ImportBufferNegative) {
+TEST_P(GraphicsMapperHidlTest, ImportBufferNegative) {
     native_handle_t* invalidHandle = nullptr;
     mGralloc->getMapper()->importBuffer(invalidHandle, [&](const auto& tmpError, const auto&) {
         EXPECT_EQ(Error::BAD_BUFFER, tmpError)
@@ -263,7 +247,7 @@
 /**
  * Test IMapper::freeBuffer with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, FreeBufferNegative) {
+TEST_P(GraphicsMapperHidlTest, FreeBufferNegative) {
     native_handle_t* invalidHandle = nullptr;
     Error error = mGralloc->getMapper()->freeBuffer(invalidHandle);
     EXPECT_EQ(Error::BAD_BUFFER, error) << "freeBuffer with nullptr did not fail with BAD_BUFFER";
@@ -286,7 +270,7 @@
 /**
  * Test IMapper::lock and IMapper::unlock.
  */
-TEST_F(GraphicsMapperHidlTest, LockUnlockBasic) {
+TEST_P(GraphicsMapperHidlTest, LockUnlockBasic) {
     const auto& info = mDummyDescriptorInfo;
 
     const native_handle_t* bufferHandle;
@@ -346,7 +330,7 @@
  * Test IMapper::lockYCbCr.  This locks a YV12 buffer, and makes sure we can
  * write to and read from it.
  */
-TEST_F(GraphicsMapperHidlTest, LockYCbCrBasic) {
+TEST_P(GraphicsMapperHidlTest, LockYCbCrBasic) {
     auto info = mDummyDescriptorInfo;
     info.format = PixelFormat::YV12;
 
@@ -405,7 +389,7 @@
 /**
  * Test IMapper::unlock with invalid buffers.
  */
-TEST_F(GraphicsMapperHidlTest, UnlockNegative) {
+TEST_P(GraphicsMapperHidlTest, UnlockNegative) {
     native_handle_t* invalidHandle = nullptr;
     mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
         EXPECT_EQ(Error::BAD_BUFFER, tmpError)
@@ -443,7 +427,7 @@
 /**
  * Test IMapper::isSupported with required format RGBA_8888
  */
-TEST_F(GraphicsMapperHidlTest, IsSupportedRGBA8888) {
+TEST_P(GraphicsMapperHidlTest, IsSupportedRGBA8888) {
     const auto& info = mDummyDescriptorInfo;
     bool supported = false;
 
@@ -454,7 +438,7 @@
 /**
  * Test IMapper::isSupported with required format YV12
  */
-TEST_F(GraphicsMapperHidlTest, IsSupportedYV12) {
+TEST_P(GraphicsMapperHidlTest, IsSupportedYV12) {
     auto info = mDummyDescriptorInfo;
     info.format = PixelFormat::YV12;
     bool supported = false;
@@ -466,7 +450,7 @@
 /**
  * Test IMapper::isSupported with optional format Y16
  */
-TEST_F(GraphicsMapperHidlTest, IsSupportedY16) {
+TEST_P(GraphicsMapperHidlTest, IsSupportedY16) {
     auto info = mDummyDescriptorInfo;
     info.format = PixelFormat::Y16;
     bool supported = false;
@@ -474,6 +458,14 @@
     ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
 }
 
+INSTANTIATE_TEST_CASE_P(
+        PerInstance, GraphicsMapperHidlTest,
+        testing::Combine(
+                testing::ValuesIn(
+                        android::hardware::getAllHalInstanceNames(IAllocator::descriptor)),
+                testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMapper::descriptor))),
+        android::hardware::PrintInstanceTupleNameToString<>);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V3_0
@@ -481,13 +473,3 @@
 }  // namespace graphics
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::mapper::V3_0::vts::GraphicsMapperHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsMapperHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsMapperHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}