diff --git a/biometrics/fingerprint/2.1/vts/functional/Android.bp b/biometrics/fingerprint/2.1/vts/functional/Android.bp
index 60228f2..c418032 100644
--- a/biometrics/fingerprint/2.1/vts/functional/Android.bp
+++ b/biometrics/fingerprint/2.1/vts/functional/Android.bp
@@ -19,6 +19,6 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["VtsHalBiometricsFingerprintV2_1TargetTest.cpp"],
     static_libs: ["android.hardware.biometrics.fingerprint@2.1"],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/configstore/1.0/vts/functional/Android.bp b/configstore/1.0/vts/functional/Android.bp
index 008b59d..31d4b1c 100644
--- a/configstore/1.0/vts/functional/Android.bp
+++ b/configstore/1.0/vts/functional/Android.bp
@@ -19,6 +19,6 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["VtsHalConfigstoreV1_0TargetTest.cpp"],
     static_libs: ["android.hardware.configstore@1.0"],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/configstore/1.0/vts/functional/VtsHalConfigstoreV1_0TargetTest.cpp b/configstore/1.0/vts/functional/VtsHalConfigstoreV1_0TargetTest.cpp
index 70b5830..8a1a313 100644
--- a/configstore/1.0/vts/functional/VtsHalConfigstoreV1_0TargetTest.cpp
+++ b/configstore/1.0/vts/functional/VtsHalConfigstoreV1_0TargetTest.cpp
@@ -16,11 +16,12 @@
 
 #define LOG_TAG "ConfigstoreHidlHalTest"
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <android/hardware/configstore/1.0/types.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <unistd.h>
 
 using ::android::hardware::configstore::V1_0::ISurfaceFlingerConfigs;
@@ -35,25 +36,12 @@
 #define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
 #define EXPECT_OK(ret) EXPECT_TRUE(ret.isOk())
 
-// Test environment for Configstore HIDL HAL.
-class ConfigstoreHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static ConfigstoreHidlEnvironment* Instance() {
-        static ConfigstoreHidlEnvironment* instance = new ConfigstoreHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<ISurfaceFlingerConfigs>(); }
-};
-
-class ConfigstoreHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class ConfigstoreHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     sp<ISurfaceFlingerConfigs> sfConfigs;
 
     virtual void SetUp() override {
-        sfConfigs = ::testing::VtsHalHidlTargetTestBase::getService<ISurfaceFlingerConfigs>(
-            ConfigstoreHidlEnvironment::Instance()->getServiceName<ISurfaceFlingerConfigs>());
+        sfConfigs = ISurfaceFlingerConfigs::getService(GetParam());
         ASSERT_NE(sfConfigs, nullptr);
     }
 
@@ -63,7 +51,7 @@
 /**
  * Ensure all ISurfaceFlingerConfigs.hal function calls are successful.
  */
-TEST_F(ConfigstoreHidlTest, TestFunctionCalls) {
+TEST_P(ConfigstoreHidlTest, TestFunctionCalls) {
     bool tmp;
 
     Return<void> status = sfConfigs->vsyncEventPhaseOffsetNs(
@@ -118,7 +106,7 @@
 /**
  * Ensure repeated call to the same function returns the same result.
  */
-TEST_F(ConfigstoreHidlTest, TestSameReturnValue) {
+TEST_P(ConfigstoreHidlTest, TestSameReturnValue) {
     int64_t original_ret;
     Return<void> status = sfConfigs->vsyncEventPhaseOffsetNs(
         [&original_ret](OptionalInt64 arg) { original_ret = arg.value; });
@@ -135,7 +123,7 @@
  * Make sure the constrains of hasWideColorDisplay, hasHDRDisplay
  * are enforced.
  */
-TEST_F(ConfigstoreHidlTest, TestColorConstrainsBasic) {
+TEST_P(ConfigstoreHidlTest, TestColorConstrainsBasic) {
     bool hasWideColorDisplay;
     bool hasHDRDisplay;
 
@@ -152,11 +140,7 @@
     }
 }
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(ConfigstoreHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    ConfigstoreHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, ConfigstoreHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(ISurfaceFlingerConfigs::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/memtrack/1.0/vts/functional/Android.bp b/memtrack/1.0/vts/functional/Android.bp
index d682e0b..9e5cf6d 100644
--- a/memtrack/1.0/vts/functional/Android.bp
+++ b/memtrack/1.0/vts/functional/Android.bp
@@ -19,5 +19,5 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["VtsHalMemtrackV1_0TargetTest.cpp"],
     static_libs: ["android.hardware.memtrack@1.0"],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp b/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp
index 691ecca..cccedca 100644
--- a/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp
+++ b/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp
@@ -20,8 +20,9 @@
 
 #include <android/hardware/memtrack/1.0/IMemtrack.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include <fcntl.h>
 #include <algorithm>
@@ -39,23 +40,10 @@
 using std::vector;
 using std::count_if;
 
-// Test environment for Memtrack HIDL HAL.
-class MemtrackHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static MemtrackHidlEnvironment* Instance() {
-        static MemtrackHidlEnvironment* instance = new MemtrackHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IMemtrack>(); }
-};
-
-class MemtrackHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class MemtrackHidlTest : public ::testing::TestWithParam<std::string> {
  public:
   virtual void SetUp() override {
-      memtrack = ::testing::VtsHalHidlTargetTestBase::getService<IMemtrack>(
-          MemtrackHidlEnvironment::Instance()->getServiceName<IMemtrack>());
+      memtrack = IMemtrack::getService(GetParam());
       ASSERT_NE(memtrack, nullptr);
   }
 
@@ -93,7 +81,7 @@
 
 /* Sanity check results when getMemory() is passed a negative PID
  */
-TEST_F(MemtrackHidlTest, BadPidTest) {
+TEST_P(MemtrackHidlTest, BadPidTest) {
   MemtrackStatus s;
   hidl_vec<MemtrackRecord> v;
   auto cb = generate_cb(&s, &v);
@@ -108,7 +96,7 @@
 
 /* Sanity check results when getMemory() is passed a bad memory usage type
  */
-TEST_F(MemtrackHidlTest, BadTypeTest) {
+TEST_P(MemtrackHidlTest, BadTypeTest) {
   MemtrackStatus s;
   hidl_vec<MemtrackRecord> v;
   auto cb = generate_cb(&s, &v);
@@ -121,7 +109,7 @@
  * for all memory types, including valid flag combinations for every
  * MemtrackRecord returned.
  */
-TEST_F(MemtrackHidlTest, GetMemoryTest) {
+TEST_P(MemtrackHidlTest, GetMemoryTest) {
   /* Opening this device causes the kernel to provide memtrack with memory
    * info for this process.
    */
@@ -172,11 +160,7 @@
                   static_cast<uint32_t>(MemtrackType::NUM_TYPES));
 }
 
-int main(int argc, char **argv) {
-    ::testing::AddGlobalTestEnvironment(MemtrackHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    MemtrackHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, MemtrackHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMemtrack::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/sensors/2.0/multihal/HalProxy.cpp b/sensors/2.0/multihal/HalProxy.cpp
index b78806a..49c5a0d 100644
--- a/sensors/2.0/multihal/HalProxy.cpp
+++ b/sensors/2.0/multihal/HalProxy.cpp
@@ -330,7 +330,7 @@
 
 Return<void> HalProxy::onDynamicSensorsDisconnected(
         const hidl_vec<int32_t>& dynamicSensorHandlesRemoved, int32_t subHalIndex) {
-    // TODO: Block this call until all pending events are flushed from queue
+    // TODO(b/143302327): Block this call until all pending events are flushed from queue
     std::vector<int32_t> sensorHandles;
     {
         std::lock_guard<std::mutex> lock(mDynamicSensorsMutex);
@@ -457,7 +457,8 @@
 }
 
 void HalProxy::handlePendingWrites() {
-    // TODO: Find a way to optimize locking strategy maybe using two mutexes instead of one.
+    // TODO(b/143302327): Find a way to optimize locking strategy maybe using two mutexes instead of
+    // one.
     std::unique_lock<std::mutex> lock(mEventQueueWriteMutex);
     while (mThreadsRun.load()) {
         mEventQueueWriteCV.wait(
@@ -485,8 +486,8 @@
             }
             lock.lock();
             if (pendingWriteEvents.size() > eventQueueSize) {
-                // TODO: Check if this erase operation is too inefficient. It will copy all the
-                // events ahead of it down to fill gap off array at front after the erase.
+                // TODO(b/143302327): Check if this erase operation is too inefficient. It will copy
+                // all the events ahead of it down to fill gap off array at front after the erase.
                 pendingWriteEvents.erase(pendingWriteEvents.begin(),
                                          pendingWriteEvents.begin() + eventQueueSize);
             } else {
@@ -554,8 +555,8 @@
         numToWrite = std::min(events.size(), mEventQueue->availableToWrite());
         if (numToWrite > 0) {
             if (mEventQueue->write(events.data(), numToWrite)) {
-                // TODO: While loop if mEventQueue->avaiableToWrite > 0 to possibly fit in more
-                // writes immediately
+                // TODO(b/143302327): While loop if mEventQueue->avaiableToWrite > 0 to possibly fit
+                // in more writes immediately
                 mEventQueueFlag->wake(static_cast<uint32_t>(EventQueueFlagBits::READ_AND_PROCESS));
             } else {
                 numToWrite = 0;
@@ -563,8 +564,8 @@
         }
     }
     if (numToWrite < events.size()) {
-        // TODO: Bound the mPendingWriteEventsQueue so that we do not trigger OOMs if framework
-        // stalls
+        // TODO(b/143302327): Bound the mPendingWriteEventsQueue so that we do not trigger OOMs if
+        // framework stalls
         std::vector<Event> eventsLeft(events.begin() + numToWrite, events.end());
         mPendingWriteEventsQueue.push({eventsLeft, numWakeupEvents});
         mEventQueueWriteCV.notify_one();
@@ -655,7 +656,7 @@
                     " w/ index %zu.",
                     mSubHalIndex);
     }
-    mHalProxy->postEventsToMessageQueue(events, numWakeupEvents, std::move(wakelock));
+    mHalProxy->postEventsToMessageQueue(processedEvents, numWakeupEvents, std::move(wakelock));
 }
 
 ScopedWakelock HalProxyCallback::createScopedWakelock(bool lock) {
diff --git a/sensors/2.0/multihal/tests/Android.bp b/sensors/2.0/multihal/tests/Android.bp
index 50a55f9..e7f9499 100644
--- a/sensors/2.0/multihal/tests/Android.bp
+++ b/sensors/2.0/multihal/tests/Android.bp
@@ -27,6 +27,7 @@
         "android.hardware.sensors@2.0",
         "libcutils",
         "libfmq",
+        "libhardware",
         "libhidlbase",
         "liblog",
         "libpower",
@@ -85,6 +86,7 @@
         "libbase",
         "libcutils",
         "libfmq",
+        "libhardware",
         "libhidlbase",
         "liblog",
         "libpower",
diff --git a/sensors/2.0/multihal/tests/HalProxy_test.cpp b/sensors/2.0/multihal/tests/HalProxy_test.cpp
index 75a4c22..1fd35d1 100644
--- a/sensors/2.0/multihal/tests/HalProxy_test.cpp
+++ b/sensors/2.0/multihal/tests/HalProxy_test.cpp
@@ -692,6 +692,38 @@
     EXPECT_EQ(proxy.injectSensorData(event), Result::BAD_VALUE);
 }
 
+TEST(HalProxyTest, PostedEventSensorHandleSubHalIndexValid) {
+    constexpr size_t kQueueSize = 5;
+    constexpr int32_t subhal1Index = 0;
+    constexpr int32_t subhal2Index = 1;
+    AllSensorsSubHal subhal1;
+    AllSensorsSubHal subhal2;
+    std::vector<ISensorsSubHal*> subHals{&subhal1, &subhal2};
+
+    std::unique_ptr<EventMessageQueue> eventQueue = makeEventFMQ(kQueueSize);
+    std::unique_ptr<WakeupMessageQueue> wakeLockQueue = makeWakelockFMQ(kQueueSize);
+    ::android::sp<ISensorsCallback> callback = new SensorsCallback();
+    HalProxy proxy(subHals);
+    proxy.initialize(*eventQueue->getDesc(), *wakeLockQueue->getDesc(), callback);
+
+    int32_t sensorHandleToPost = 0x00000001;
+    Event eventIn = makeAccelerometerEvent();
+    eventIn.sensorHandle = sensorHandleToPost;
+    std::vector<Event> eventsToPost{eventIn};
+    subhal1.postEvents(eventsToPost, false);
+
+    Event eventOut;
+    EXPECT_TRUE(eventQueue->read(&eventOut));
+
+    EXPECT_EQ(eventOut.sensorHandle, (subhal1Index << 24) | sensorHandleToPost);
+
+    subhal2.postEvents(eventsToPost, false);
+
+    EXPECT_TRUE(eventQueue->read(&eventOut));
+
+    EXPECT_EQ(eventOut.sensorHandle, (subhal2Index << 24) | sensorHandleToPost);
+}
+
 // Helper implementations follow
 void testSensorsListFromProxyAndSubHal(const std::vector<SensorInfo>& proxySensorsList,
                                        const std::vector<SensorInfo>& subHalSensorsList) {
diff --git a/sensors/2.0/multihal/tests/fake_subhal/Sensor.cpp b/sensors/2.0/multihal/tests/fake_subhal/Sensor.cpp
index 4d53665..de89a00 100644
--- a/sensors/2.0/multihal/tests/fake_subhal/Sensor.cpp
+++ b/sensors/2.0/multihal/tests/fake_subhal/Sensor.cpp
@@ -16,6 +16,7 @@
 
 #include "Sensor.h"
 
+#include <hardware/sensors.h>
 #include <utils/SystemClock.h>
 
 #include <cmath>
@@ -31,14 +32,21 @@
 using ::android::hardware::sensors::V1_0::SensorFlagBits;
 using ::android::hardware::sensors::V1_0::SensorStatus;
 
-static constexpr float kDefaultMaxDelayUs = 10 * 1000 * 1000;
-
-Sensor::Sensor(ISensorsEventCallback* callback)
+Sensor::Sensor(int32_t sensorHandle, ISensorsEventCallback* callback)
     : mIsEnabled(false),
       mSamplingPeriodNs(0),
       mLastSampleTimeNs(0),
       mCallback(callback),
       mMode(OperationMode::NORMAL) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    constexpr float kDefaultMaxDelayUs = 1000 * 1000;
+    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
     mRunThread = std::thread(startThread, this);
 }
 
@@ -171,8 +179,10 @@
     return result;
 }
 
-OnChangeSensor::OnChangeSensor(ISensorsEventCallback* callback)
-    : Sensor(callback), mPreviousEventSet(false) {}
+OnChangeSensor::OnChangeSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : Sensor(sensorHandle, callback), mPreviousEventSet(false) {
+    mSensorInfo.flags |= SensorFlagBits::ON_CHANGE_MODE;
+}
 
 void OnChangeSensor::activate(bool enable) {
     Sensor::activate(enable);
@@ -196,175 +206,139 @@
     return outputEvents;
 }
 
-AccelSensor::AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback) : Sensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+ContinuousSensor::ContinuousSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : Sensor(sensorHandle, callback) {
+    mSensorInfo.flags |= SensorFlagBits::CONTINUOUS_MODE;
+}
+
+AccelSensor::AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : ContinuousSensor(sensorHandle, callback) {
     mSensorInfo.name = "Accel Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::ACCELEROMETER;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_ACCELEROMETER;
     mSensorInfo.maxRange = 78.4f;  // +/- 8g
     mSensorInfo.resolution = 1.52e-5;
     mSensorInfo.power = 0.001f;        // mA
     mSensorInfo.minDelay = 20 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::DATA_INJECTION);
-};
+    mSensorInfo.flags |= SensorFlagBits::DATA_INJECTION;
+}
+
+std::vector<Event> AccelSensor::readEvents() {
+    std::vector<Event> events;
+    Event event;
+    event.sensorHandle = mSensorInfo.sensorHandle;
+    event.sensorType = mSensorInfo.type;
+    event.timestamp = ::android::elapsedRealtimeNano();
+    event.u.vec3.x = 0;
+    event.u.vec3.y = 0;
+    event.u.vec3.z = -9.815;
+    event.u.vec3.status = SensorStatus::ACCURACY_HIGH;
+    events.push_back(event);
+    return events;
+}
 
 PressureSensor::PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
-    : Sensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : ContinuousSensor(sensorHandle, callback) {
     mSensorInfo.name = "Pressure Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::PRESSURE;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_PRESSURE;
     mSensorInfo.maxRange = 1100.0f;     // hPa
     mSensorInfo.resolution = 0.005f;    // hPa
     mSensorInfo.power = 0.001f;         // mA
     mSensorInfo.minDelay = 100 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = 0;
-};
+}
 
 MagnetometerSensor::MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
-    : Sensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : ContinuousSensor(sensorHandle, callback) {
     mSensorInfo.name = "Magnetic Field Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::MAGNETIC_FIELD;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_MAGNETIC_FIELD;
     mSensorInfo.maxRange = 1300.0f;
     mSensorInfo.resolution = 0.01f;
     mSensorInfo.power = 0.001f;        // mA
     mSensorInfo.minDelay = 20 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = 0;
-};
+}
 
 LightSensor::LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
-    : OnChangeSensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : OnChangeSensor(sensorHandle, callback) {
     mSensorInfo.name = "Light Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::LIGHT;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_LIGHT;
     mSensorInfo.maxRange = 43000.0f;
     mSensorInfo.resolution = 10.0f;
     mSensorInfo.power = 0.001f;         // mA
     mSensorInfo.minDelay = 200 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
-};
+}
 
 ProximitySensor::ProximitySensor(int32_t sensorHandle, ISensorsEventCallback* callback)
-    : OnChangeSensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : OnChangeSensor(sensorHandle, callback) {
     mSensorInfo.name = "Proximity Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::PROXIMITY;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_PROXIMITY;
     mSensorInfo.maxRange = 5.0f;
     mSensorInfo.resolution = 1.0f;
     mSensorInfo.power = 0.012f;         // mA
     mSensorInfo.minDelay = 200 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags =
-            static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE | SensorFlagBits::WAKE_UP);
-};
+    mSensorInfo.flags |= SensorFlagBits::WAKE_UP;
+}
 
-GyroSensor::GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback) : Sensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+GyroSensor::GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : ContinuousSensor(sensorHandle, callback) {
     mSensorInfo.name = "Gyro Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::GYROSCOPE;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_GYROSCOPE;
     mSensorInfo.maxRange = 1000.0f * M_PI / 180.0f;
     mSensorInfo.resolution = 1000.0f * M_PI / (180.0f * 32768.0f);
     mSensorInfo.power = 0.001f;
     mSensorInfo.minDelay = 2.5f * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = 0;
-};
+}
+
+std::vector<Event> GyroSensor::readEvents() {
+    std::vector<Event> events;
+    Event event;
+    event.sensorHandle = mSensorInfo.sensorHandle;
+    event.sensorType = mSensorInfo.type;
+    event.timestamp = ::android::elapsedRealtimeNano();
+    event.u.vec3.x = 0;
+    event.u.vec3.y = 0;
+    event.u.vec3.z = 0;
+    event.u.vec3.status = SensorStatus::ACCURACY_HIGH;
+    events.push_back(event);
+    return events;
+}
 
 AmbientTempSensor::AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
-    : OnChangeSensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : OnChangeSensor(sensorHandle, callback) {
     mSensorInfo.name = "Ambient Temp Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::AMBIENT_TEMPERATURE;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_AMBIENT_TEMPERATURE;
     mSensorInfo.maxRange = 80.0f;
     mSensorInfo.resolution = 0.01f;
     mSensorInfo.power = 0.001f;
     mSensorInfo.minDelay = 40 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
-};
+}
 
 DeviceTempSensor::DeviceTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
-    : OnChangeSensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : ContinuousSensor(sensorHandle, callback) {
     mSensorInfo.name = "Device Temp Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::TEMPERATURE;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_TEMPERATURE;
     mSensorInfo.maxRange = 80.0f;
     mSensorInfo.resolution = 0.01f;
     mSensorInfo.power = 0.001f;
     mSensorInfo.minDelay = 40 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
 }
 
 RelativeHumiditySensor::RelativeHumiditySensor(int32_t sensorHandle,
                                                ISensorsEventCallback* callback)
-    : OnChangeSensor(callback) {
-    mSensorInfo.sensorHandle = sensorHandle;
+    : OnChangeSensor(sensorHandle, callback) {
     mSensorInfo.name = "Relative Humidity Sensor";
-    mSensorInfo.vendor = "Vendor String";
-    mSensorInfo.version = 1;
     mSensorInfo.type = SensorType::RELATIVE_HUMIDITY;
-    mSensorInfo.typeAsString = "";
+    mSensorInfo.typeAsString = SENSOR_STRING_TYPE_RELATIVE_HUMIDITY;
     mSensorInfo.maxRange = 100.0f;
     mSensorInfo.resolution = 0.1f;
     mSensorInfo.power = 0.001f;
     mSensorInfo.minDelay = 40 * 1000;  // microseconds
-    mSensorInfo.maxDelay = kDefaultMaxDelayUs;
-    mSensorInfo.fifoReservedEventCount = 0;
-    mSensorInfo.fifoMaxEventCount = 0;
-    mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
 }
 
 }  // namespace implementation
diff --git a/sensors/2.0/multihal/tests/fake_subhal/Sensor.h b/sensors/2.0/multihal/tests/fake_subhal/Sensor.h
index 980ea54..60f5d3d 100644
--- a/sensors/2.0/multihal/tests/fake_subhal/Sensor.h
+++ b/sensors/2.0/multihal/tests/fake_subhal/Sensor.h
@@ -45,7 +45,7 @@
 
 class Sensor {
   public:
-    Sensor(ISensorsEventCallback* callback);
+    Sensor(int32_t sensorHandle, ISensorsEventCallback* callback);
     virtual ~Sensor();
 
     const SensorInfo& getSensorInfo() const;
@@ -81,7 +81,7 @@
 
 class OnChangeSensor : public Sensor {
   public:
-    OnChangeSensor(ISensorsEventCallback* callback);
+    OnChangeSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
 
     virtual void activate(bool enable) override;
 
@@ -93,14 +93,40 @@
     bool mPreviousEventSet;
 };
 
-class AccelSensor : public Sensor {
+class ContinuousSensor : public Sensor {
   public:
-    AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+    ContinuousSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
 };
 
-class GyroSensor : public Sensor {
+class AccelSensor : public ContinuousSensor {
+  public:
+    AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    std::vector<Event> readEvents() override;
+};
+
+class GyroSensor : public ContinuousSensor {
   public:
     GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    std::vector<Event> readEvents() override;
+};
+
+class DeviceTempSensor : public ContinuousSensor {
+  public:
+    DeviceTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class PressureSensor : public ContinuousSensor {
+  public:
+    PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class MagnetometerSensor : public ContinuousSensor {
+  public:
+    MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
 };
 
 class AmbientTempSensor : public OnChangeSensor {
@@ -108,21 +134,6 @@
     AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
 };
 
-class DeviceTempSensor : public OnChangeSensor {
-  public:
-    DeviceTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
-};
-
-class PressureSensor : public Sensor {
-  public:
-    PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
-};
-
-class MagnetometerSensor : public Sensor {
-  public:
-    MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
-};
-
 class LightSensor : public OnChangeSensor {
   public:
     LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
diff --git a/sensors/2.0/multihal/tests/fake_subhal/SensorsSubHal.cpp b/sensors/2.0/multihal/tests/fake_subhal/SensorsSubHal.cpp
index 0da4246..ff5ff38 100644
--- a/sensors/2.0/multihal/tests/fake_subhal/SensorsSubHal.cpp
+++ b/sensors/2.0/multihal/tests/fake_subhal/SensorsSubHal.cpp
@@ -172,11 +172,11 @@
     AddSensor<GyroSensor>();
     AddSensor<MagnetometerSensor>();
     AddSensor<PressureSensor>();
+    AddSensor<DeviceTempSensor>();
 }
 
 OnChangeSensorsSubHal::OnChangeSensorsSubHal() {
     AddSensor<AmbientTempSensor>();
-    AddSensor<DeviceTempSensor>();
     AddSensor<LightSensor>();
     AddSensor<ProximitySensor>();
     AddSensor<RelativeHumiditySensor>();
@@ -187,8 +187,8 @@
     AddSensor<GyroSensor>();
     AddSensor<MagnetometerSensor>();
     AddSensor<PressureSensor>();
-    AddSensor<AmbientTempSensor>();
     AddSensor<DeviceTempSensor>();
+    AddSensor<AmbientTempSensor>();
     AddSensor<LightSensor>();
     AddSensor<ProximitySensor>();
     AddSensor<RelativeHumiditySensor>();
diff --git a/weaver/1.0/vts/functional/Android.bp b/weaver/1.0/vts/functional/Android.bp
index 9fdbb18..3942deb 100644
--- a/weaver/1.0/vts/functional/Android.bp
+++ b/weaver/1.0/vts/functional/Android.bp
@@ -19,5 +19,5 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["VtsHalWeaverV1_0TargetTest.cpp"],
     static_libs: ["android.hardware.weaver@1.0"],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/weaver/1.0/vts/functional/VtsHalWeaverV1_0TargetTest.cpp b/weaver/1.0/vts/functional/VtsHalWeaverV1_0TargetTest.cpp
index de2a1de..ae92c36 100644
--- a/weaver/1.0/vts/functional/VtsHalWeaverV1_0TargetTest.cpp
+++ b/weaver/1.0/vts/functional/VtsHalWeaverV1_0TargetTest.cpp
@@ -15,12 +15,12 @@
  */
 
 #include <android/hardware/weaver/1.0/IWeaver.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include <limits>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
-
 using ::android::hardware::weaver::V1_0::IWeaver;
 using ::android::hardware::weaver::V1_0::WeaverConfig;
 using ::android::hardware::weaver::V1_0::WeaverReadStatus;
@@ -34,22 +34,9 @@
 const std::vector<uint8_t> VALUE{16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1};
 const std::vector<uint8_t> OTHER_VALUE{0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 255, 255};
 
-// Test environment for Weaver HIDL HAL.
-class WeaverHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static WeaverHidlEnvironment* Instance() {
-        static WeaverHidlEnvironment* instance = new WeaverHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IWeaver>(); }
-};
-
-struct WeaverHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+struct WeaverHidlTest : public ::testing::TestWithParam<std::string> {
     virtual void SetUp() override {
-        weaver = ::testing::VtsHalHidlTargetTestBase::getService<IWeaver>(
-            WeaverHidlEnvironment::Instance()->getServiceName<IWeaver>());
+        weaver = IWeaver::getService(GetParam());
         ASSERT_NE(weaver, nullptr);
     }
 
@@ -61,7 +48,7 @@
 /*
  * Checks config values are suitably large
  */
-TEST_F(WeaverHidlTest, GetConfig) {
+TEST_P(WeaverHidlTest, GetConfig) {
     WeaverStatus status;
     WeaverConfig config;
 
@@ -83,7 +70,7 @@
 /*
  * Gets the config twice and checks they are the same
  */
-TEST_F(WeaverHidlTest, GettingConfigMultipleTimesGivesSameResult) {
+TEST_P(WeaverHidlTest, GettingConfigMultipleTimesGivesSameResult) {
     WeaverConfig config1;
     WeaverConfig config2;
 
@@ -114,7 +101,7 @@
 /*
  * Gets the number of slots from the config and writes a key and value to the last one
  */
-TEST_F(WeaverHidlTest, WriteToLastSlot) {
+TEST_P(WeaverHidlTest, WriteToLastSlot) {
     WeaverStatus status;
     WeaverConfig config;
     const auto configRet = weaver->getConfig([&](WeaverStatus s, WeaverConfig c) {
@@ -134,7 +121,7 @@
  * Writes a key and value to a slot
  * Reads the slot with the same key and receives the value that was previously written
  */
-TEST_F(WeaverHidlTest, WriteFollowedByReadGivesTheSameValue) {
+TEST_P(WeaverHidlTest, WriteFollowedByReadGivesTheSameValue) {
     constexpr uint32_t slotId = 0;
     const auto ret = weaver->write(slotId, KEY, VALUE);
     ASSERT_TRUE(ret.isOk());
@@ -162,7 +149,7 @@
  * Overwrites the slot with a new key and value
  * Reads the slot with the new key and receives the new value
  */
-TEST_F(WeaverHidlTest, OverwritingSlotUpdatesTheValue) {
+TEST_P(WeaverHidlTest, OverwritingSlotUpdatesTheValue) {
     constexpr uint32_t slotId = 0;
     const auto initialWriteRet = weaver->write(slotId, WRONG_KEY, VALUE);
     ASSERT_TRUE(initialWriteRet.isOk());
@@ -193,7 +180,7 @@
  * Writes a key and value to a slot
  * Reads the slot with a different key so does not receive the value
  */
-TEST_F(WeaverHidlTest, WriteFollowedByReadWithWrongKeyDoesNotGiveTheValue) {
+TEST_P(WeaverHidlTest, WriteFollowedByReadWithWrongKeyDoesNotGiveTheValue) {
     constexpr uint32_t slotId = 0;
     const auto ret = weaver->write(slotId, KEY, VALUE);
     ASSERT_TRUE(ret.isOk());
@@ -217,7 +204,7 @@
 /*
  * Writing to an invalid slot fails
  */
-TEST_F(WeaverHidlTest, WritingToInvalidSlotFails) {
+TEST_P(WeaverHidlTest, WritingToInvalidSlotFails) {
     WeaverStatus status;
     WeaverConfig config;
     const auto configRet = weaver->getConfig([&](WeaverStatus s, WeaverConfig c) {
@@ -240,7 +227,7 @@
 /*
  * Reading from an invalid slot fails rather than incorrect key
  */
-TEST_F(WeaverHidlTest, ReadingFromInvalidSlotFails) {
+TEST_P(WeaverHidlTest, ReadingFromInvalidSlotFails) {
     WeaverStatus status;
     WeaverConfig config;
     const auto configRet = weaver->getConfig([&](WeaverStatus s, WeaverConfig c) {
@@ -276,7 +263,7 @@
 /*
  * Writing a key that is too large fails
  */
-TEST_F(WeaverHidlTest, WriteWithTooLargeKeyFails) {
+TEST_P(WeaverHidlTest, WriteWithTooLargeKeyFails) {
     WeaverStatus status;
     WeaverConfig config;
     const auto configRet = weaver->getConfig([&](WeaverStatus s, WeaverConfig c) {
@@ -297,7 +284,7 @@
 /*
  * Writing a value that is too large fails
  */
-TEST_F(WeaverHidlTest, WriteWithTooLargeValueFails) {
+TEST_P(WeaverHidlTest, WriteWithTooLargeValueFails) {
     WeaverStatus status;
     WeaverConfig config;
     const auto configRet = weaver->getConfig([&](WeaverStatus s, WeaverConfig c) {
@@ -318,7 +305,7 @@
 /*
  * Reading with a key that is loo large fails
  */
-TEST_F(WeaverHidlTest, ReadWithTooLargeKeyFails) {
+TEST_P(WeaverHidlTest, ReadWithTooLargeKeyFails) {
     WeaverStatus status;
     WeaverConfig config;
     const auto configRet = weaver->getConfig([&](WeaverStatus s, WeaverConfig c) {
@@ -349,11 +336,7 @@
     EXPECT_EQ(timeout, 0u);
 }
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(WeaverHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    WeaverHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, WeaverHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IWeaver::descriptor)),
+        android::hardware::PrintInstanceNameToString);