diff --git a/libs/vr/libvrflinger/Android.bp b/libs/vr/libvrflinger/Android.bp
index bf950cd..6f3f1d6 100644
--- a/libs/vr/libvrflinger/Android.bp
+++ b/libs/vr/libvrflinger/Android.bp
@@ -93,3 +93,7 @@
     header_libs: headerLibraries,
     name: "libvrflinger",
 }
+
+subdirs = [
+    "tests",
+]
diff --git a/libs/vr/libvrflinger/tests/Android.bp b/libs/vr/libvrflinger/tests/Android.bp
new file mode 100644
index 0000000..d500278
--- /dev/null
+++ b/libs/vr/libvrflinger/tests/Android.bp
@@ -0,0 +1,37 @@
+shared_libs = [
+    "android.hardware.configstore-utils",
+    "android.hardware.configstore@1.0",
+    "libbinder",
+    "libbufferhubqueue",
+    "libcutils",
+    "libgui",
+    "libhidlbase",
+    "liblog",
+    "libui",
+    "libutils",
+    "libnativewindow",
+    "libpdx_default_transport",
+]
+
+static_libs = [
+    "libdisplay",
+]
+
+cc_test {
+    srcs: ["vrflinger_test.cpp"],
+    // See go/apct-presubmit for documentation on how this .filter file is used
+    // by Android's automated testing infrastructure for test filtering.
+    data: ["vrflinger_test.filter"],
+    static_libs: static_libs,
+    shared_libs: shared_libs,
+    cflags: [
+        "-DLOG_TAG=\"VrFlingerTest\"",
+        "-DTRACE=0",
+        "-O0",
+        "-g",
+        "-Wall",
+        "-Werror",
+    ],
+    cppflags: ["-std=c++1z"],
+    name: "vrflinger_test",
+}
diff --git a/libs/vr/libvrflinger/tests/vrflinger_test.cpp b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
new file mode 100644
index 0000000..3f7a72f
--- /dev/null
+++ b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
@@ -0,0 +1,229 @@
+#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
+#include <android/hardware/configstore/1.1/types.h>
+#include <android/hardware_buffer.h>
+#include <binder/IServiceManager.h>
+#include <binder/Parcel.h>
+#include <binder/ProcessState.h>
+#include <configstore/Utils.h>
+#include <cutils/properties.h>
+#include <gtest/gtest.h>
+#include <gui/ISurfaceComposer.h>
+#include <log/log.h>
+#include <utils/StrongPointer.h>
+
+#include <chrono>
+#include <memory>
+#include <mutex>
+#include <optional>
+#include <thread>
+
+#include <private/dvr/display_client.h>
+
+using namespace android::hardware::configstore;
+using namespace android::hardware::configstore::V1_0;
+using android::dvr::display::DisplayClient;
+using android::dvr::display::Surface;
+using android::dvr::display::SurfaceAttribute;
+using android::dvr::display::SurfaceAttributeValue;
+
+namespace android {
+namespace dvr {
+
+// The transaction code for asking surface flinger if vr flinger is active. This
+// is done as a hidden api since it's only used for tests. See the "case 1028"
+// block in SurfaceFlinger::onTransact() in SurfaceFlinger.cpp.
+constexpr uint32_t kIsVrFlingerActiveTransactionCode = 1028;
+
+// The maximum amount of time to give vr flinger to activate/deactivate. If the
+// switch hasn't completed in this amount of time, the test will fail.
+constexpr auto kVrFlingerSwitchMaxTime = std::chrono::seconds(1);
+
+// How long to wait between each check to see if the vr flinger switch
+// completed.
+constexpr auto kVrFlingerSwitchPollInterval = std::chrono::milliseconds(50);
+
+// A Binder connection to surface flinger.
+class SurfaceFlingerConnection {
+ public:
+  static std::unique_ptr<SurfaceFlingerConnection> Create() {
+    sp<ISurfaceComposer> surface_flinger = interface_cast<ISurfaceComposer>(
+        defaultServiceManager()->getService(String16("SurfaceFlinger")));
+    if (surface_flinger == nullptr) {
+      return nullptr;
+    }
+
+    return std::unique_ptr<SurfaceFlingerConnection>(
+        new SurfaceFlingerConnection(surface_flinger));
+  }
+
+  // Returns true if the surface flinger process is still running. We use this
+  // to detect if surface flinger has crashed.
+  bool IsAlive() {
+    IInterface::asBinder(surface_flinger_)->pingBinder();
+    return IInterface::asBinder(surface_flinger_)->isBinderAlive();
+  }
+
+  // Return true if vr flinger is currently active, false otherwise. If there's
+  // an error communicating with surface flinger, std::nullopt is returned.
+  std::optional<bool> IsVrFlingerActive() {
+    Parcel data, reply;
+    status_t result =
+        data.writeInterfaceToken(surface_flinger_->getInterfaceDescriptor());
+    if (result != NO_ERROR) {
+      return std::nullopt;
+    }
+    result = IInterface::asBinder(surface_flinger_)
+                 ->transact(kIsVrFlingerActiveTransactionCode, data, &reply);
+    if (result != NO_ERROR) {
+      return std::nullopt;
+    }
+    bool vr_flinger_active;
+    result = reply.readBool(&vr_flinger_active);
+    if (result != NO_ERROR) {
+      return std::nullopt;
+    }
+    return vr_flinger_active;
+  }
+
+  enum class VrFlingerSwitchResult : int8_t {
+    kSuccess,
+    kTimedOut,
+    kCommunicationError,
+    kSurfaceFlingerDied
+  };
+
+  // Wait for vr flinger to become active or inactive.
+  VrFlingerSwitchResult WaitForVrFlinger(bool wait_active) {
+    auto start_time = std::chrono::steady_clock::now();
+    while (1) {
+      std::this_thread::sleep_for(kVrFlingerSwitchPollInterval);
+      if (!IsAlive()) {
+        return VrFlingerSwitchResult::kSurfaceFlingerDied;
+      }
+      std::optional<bool> vr_flinger_active = IsVrFlingerActive();
+      if (!vr_flinger_active.has_value()) {
+        return VrFlingerSwitchResult::kCommunicationError;
+      }
+      if (vr_flinger_active.value() == wait_active) {
+        return VrFlingerSwitchResult::kSuccess;
+      } else if (std::chrono::steady_clock::now() - start_time >
+                 kVrFlingerSwitchMaxTime) {
+        return VrFlingerSwitchResult::kTimedOut;
+      }
+    }
+  }
+
+ private:
+  SurfaceFlingerConnection(sp<ISurfaceComposer> surface_flinger)
+      : surface_flinger_(surface_flinger) {}
+
+  sp<ISurfaceComposer> surface_flinger_ = nullptr;
+};
+
+// This test activates vr flinger by creating a vr flinger surface, then
+// deactivates vr flinger by destroying the surface. We verify that vr flinger
+// is activated and deactivated as expected, and that surface flinger doesn't
+// crash.
+//
+// If the device doesn't support vr flinger (as repoted by ConfigStore), the
+// test does nothing.
+//
+// If the device is a standalone vr device, the test also does nothing, since
+// this test verifies the behavior of display handoff from surface flinger to vr
+// flinger and back, and standalone devices never hand control of the display
+// back to surface flinger.
+TEST(VrFlingerTest, ActivateDeactivate) {
+  android::ProcessState::self()->startThreadPool();
+
+  // Exit immediately if the device doesn't support vr flinger. This ConfigStore
+  // check is the same mechanism used by surface flinger to decide if it should
+  // initialize vr flinger.
+  bool vr_flinger_enabled =
+      getBool<ISurfaceFlingerConfigs, &ISurfaceFlingerConfigs::useVrFlinger>(
+          false);
+  if (!vr_flinger_enabled) {
+    return;
+  }
+
+  // This test doesn't apply to standalone vr devices.
+  if (property_get_bool("ro.boot.vr", false)) {
+    return;
+  }
+
+  auto surface_flinger_connection = SurfaceFlingerConnection::Create();
+  ASSERT_NE(surface_flinger_connection, nullptr);
+
+  // Verify we start off with vr flinger disabled.
+  ASSERT_TRUE(surface_flinger_connection->IsAlive());
+  auto vr_flinger_active = surface_flinger_connection->IsVrFlingerActive();
+  ASSERT_TRUE(vr_flinger_active.has_value());
+  ASSERT_FALSE(vr_flinger_active.value());
+
+  // Create a vr flinger surface, and verify vr flinger becomes active.
+  // Introduce a scope so that, at the end of the scope, the vr flinger surface
+  // is destroyed, and vr flinger deactivates.
+  {
+    auto display_client = DisplayClient::Create();
+    ASSERT_NE(display_client, nullptr);
+    auto metrics = display_client->GetDisplayMetrics();
+    ASSERT_TRUE(metrics.ok());
+
+    auto surface = Surface::CreateSurface({
+        {SurfaceAttribute::Direct, SurfaceAttributeValue(true)},
+        {SurfaceAttribute::Visible, SurfaceAttributeValue(true)},
+    });
+    ASSERT_TRUE(surface.ok());
+    ASSERT_TRUE(surface.get() != nullptr);
+
+    auto queue = surface.get()->CreateQueue(
+        metrics.get().display_width, metrics.get().display_height,
+        /*layer_count=*/1, AHARDWAREBUFFER_FORMAT_R8G8B8X8_UNORM,
+        AHARDWAREBUFFER_USAGE_GPU_SAMPLED_IMAGE |
+            AHARDWAREBUFFER_USAGE_GPU_COLOR_OUTPUT |
+            AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN,
+        /*capacity=*/1,
+        /*metadata_size=*/0);
+    ASSERT_TRUE(queue.ok());
+    ASSERT_TRUE(queue.get() != nullptr);
+
+    size_t slot;
+    pdx::LocalHandle release_fence;
+    auto buffer = queue.get()->Dequeue(/*timeout=*/0, &slot, &release_fence);
+    ASSERT_TRUE(buffer.ok());
+    ASSERT_TRUE(buffer.get() != nullptr);
+
+    ASSERT_EQ(buffer.get()->width(), metrics.get().display_width);
+    ASSERT_EQ(buffer.get()->height(), metrics.get().display_height);
+
+    void* raw_buf = nullptr;
+    ASSERT_GE(buffer.get()->Lock(AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN,
+                                 /*x=*/0, /*y=*/0, buffer.get()->width(),
+                                 buffer.get()->height(), &raw_buf),
+              0);
+    ASSERT_NE(raw_buf, nullptr);
+    uint32_t* pixels = static_cast<uint32_t*>(raw_buf);
+
+    for (int i = 0; i < buffer.get()->stride() * buffer.get()->height(); ++i) {
+      pixels[i] = 0x0000ff00;
+    }
+
+    ASSERT_GE(buffer.get()->Unlock(), 0);
+
+    ASSERT_GE(buffer.get()->Post(/*ready_fence=*/pdx::LocalHandle(),
+                                 /*meta=*/nullptr,
+                                 /*user_metadata_size=*/0),
+              0);
+
+    ASSERT_EQ(
+        surface_flinger_connection->WaitForVrFlinger(/*wait_active=*/true),
+        SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
+  }
+
+  // Now that the vr flinger surface is destroyed, vr flinger should deactivate.
+  ASSERT_EQ(
+      surface_flinger_connection->WaitForVrFlinger(/*wait_active=*/false),
+      SurfaceFlingerConnection::VrFlingerSwitchResult::kSuccess);
+}
+
+}  // namespace dvr
+}  // namespace android
diff --git a/libs/vr/libvrflinger/tests/vrflinger_test.filter b/libs/vr/libvrflinger/tests/vrflinger_test.filter
new file mode 100644
index 0000000..f6f3eff
--- /dev/null
+++ b/libs/vr/libvrflinger/tests/vrflinger_test.filter
@@ -0,0 +1,5 @@
+{
+        "presubmit": {
+            "filter": "VrFlingerTest.*"
+        }
+}