Change NNAPI VTS to use TEST_P to iterate across all service instances

This CL removes a dependency on the VTS test runner by dynamically
discovering all NN HAL service instances in the gtest binary itself,
and runs through all service instances with parameterized tests.

This CL converts TEST_F cases to TEST_P cases, where the test parameter
is the name of the service instance. For existing TEST_P cases (such as
the generated test cases), the service instance name is made to be the
first test parameter.

This CL enables the NN VTS tests to be more portable, e.g., they can
run directly as a presubmit test.

Fixes: 124540002
Test: mma
Test: VtsHalNeuralnetworksV1_*TargetTest (with sample-all)
Test: cd $ANDROID_BUILD_TOP/hardware/interfaces/neuralnetworks && atest
Change-Id: I1e301d7c9f9342bb8f35a267bef180f510944b19
Merged-In: I1e301d7c9f9342bb8f35a267bef180f510944b19
(cherry picked from commit 7076f629b75aa24e9759d1efea874662744dd4bf)
diff --git a/neuralnetworks/1.1/vts/functional/Android.bp b/neuralnetworks/1.1/vts/functional/Android.bp
index c197e6d..4e85355 100644
--- a/neuralnetworks/1.1/vts/functional/Android.bp
+++ b/neuralnetworks/1.1/vts/functional/Android.bp
@@ -14,10 +14,11 @@
 // limitations under the License.
 //
 
-cc_defaults {
-    name: "VtsHalNeuralNetworksV1_1TargetTestDefaults",
+cc_test {
+    name: "VtsHalNeuralnetworksV1_1TargetTest",
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
+        "BasicTests.cpp",
         "TestAssertions.cpp",
         "ValidateModel.cpp",
         "ValidateRequest.cpp",
@@ -39,35 +40,12 @@
         "libneuralnetworks_utils",
         "VtsHalNeuralNetworksV1_0_utils",
     ],
+    whole_static_libs: [
+        "neuralnetworks_generated_V1_0_example",
+        "neuralnetworks_generated_V1_1_example",
+    ],
     header_libs: [
         "libneuralnetworks_headers",
     ],
     test_suites: ["general-tests"],
 }
-
-cc_test {
-    name: "VtsHalNeuralnetworksV1_1TargetTest",
-    defaults: ["VtsHalNeuralNetworksV1_1TargetTestDefaults"],
-    srcs: [
-        "BasicTests.cpp",
-    ],
-    whole_static_libs: [
-        "neuralnetworks_generated_V1_0_example",
-        "neuralnetworks_generated_V1_1_example",
-    ],
-}
-
-cc_test {
-    name: "PresubmitHalNeuralnetworksV1_1TargetTest",
-    defaults: ["VtsHalNeuralNetworksV1_1TargetTestDefaults"],
-    srcs: [
-        "BasicTests.cpp",
-    ],
-    whole_static_libs: [
-        "neuralnetworks_generated_V1_0_example",
-        "neuralnetworks_generated_V1_1_example",
-    ],
-    cflags: [
-        "-DPRESUBMIT_NOT_VTS",
-    ],
-}
diff --git a/neuralnetworks/1.1/vts/functional/BasicTests.cpp b/neuralnetworks/1.1/vts/functional/BasicTests.cpp
index 2791e80..44836f0 100644
--- a/neuralnetworks/1.1/vts/functional/BasicTests.cpp
+++ b/neuralnetworks/1.1/vts/functional/BasicTests.cpp
@@ -24,17 +24,17 @@
 using V1_0::ErrorStatus;
 
 // create device test
-TEST_F(NeuralnetworksHidlTest, CreateDevice) {}
+TEST_P(NeuralnetworksHidlTest, CreateDevice) {}
 
 // status test
-TEST_F(NeuralnetworksHidlTest, StatusTest) {
+TEST_P(NeuralnetworksHidlTest, StatusTest) {
     Return<DeviceStatus> status = kDevice->getStatus();
     ASSERT_TRUE(status.isOk());
     EXPECT_EQ(DeviceStatus::AVAILABLE, static_cast<DeviceStatus>(status));
 }
 
 // initialization
-TEST_F(NeuralnetworksHidlTest, GetCapabilitiesTest) {
+TEST_P(NeuralnetworksHidlTest, GetCapabilitiesTest) {
     Return<void> ret =
             kDevice->getCapabilities_1_1([](ErrorStatus status, const Capabilities& capabilities) {
                 EXPECT_EQ(ErrorStatus::NONE, status);
diff --git a/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.cpp
index fddfc2b..7a929d6 100644
--- a/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.cpp
@@ -156,6 +156,20 @@
     checkResults(testModel, outputs);
 }
 
+void GeneratedTestBase::SetUp() {
+    testing::TestWithParam<GeneratedTestParam>::SetUp();
+    ASSERT_NE(kDevice, nullptr);
+}
+
+std::vector<NamedModel> getNamedModels(const FilterFn& filter) {
+    return TestModelManager::get().getTestModels(filter);
+}
+
+std::string printGeneratedTest(const testing::TestParamInfo<GeneratedTestParam>& info) {
+    const auto& [namedDevice, namedModel] = info.param;
+    return gtestCompliantName(getName(namedDevice) + "_" + getName(namedModel));
+}
+
 // Tag for the generated tests
 class GeneratedTest : public GeneratedTestBase {};
 
diff --git a/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.h b/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.h
index 273d1ec..cf449ea 100644
--- a/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.h
+++ b/neuralnetworks/1.1/vts/functional/GeneratedTestHarness.h
@@ -18,29 +18,38 @@
 #define ANDROID_HARDWARE_NEURALNETWORKS_V1_1_GENERATED_TEST_HARNESS_H
 
 #include <android/hardware/neuralnetworks/1.1/IDevice.h>
+#include "1.0/Utils.h"
 #include "TestHarness.h"
 #include "VtsHalNeuralnetworks.h"
 
 namespace android::hardware::neuralnetworks::V1_1::vts::functional {
 
-class GeneratedTestBase
-    : public NeuralnetworksHidlTest,
-      public testing::WithParamInterface<test_helper::TestModelManager::TestParam> {
+using NamedModel = Named<const test_helper::TestModel*>;
+using GeneratedTestParam = std::tuple<NamedDevice, NamedModel>;
+
+class GeneratedTestBase : public testing::TestWithParam<GeneratedTestParam> {
   protected:
-    const test_helper::TestModel& kTestModel = *GetParam().second;
+    void SetUp() override;
+    const sp<IDevice> kDevice = getData(std::get<NamedDevice>(GetParam()));
+    const test_helper::TestModel& kTestModel = *getData(std::get<NamedModel>(GetParam()));
 };
 
-#define INSTANTIATE_GENERATED_TEST(TestSuite, filter)                                        \
-    INSTANTIATE_TEST_SUITE_P(                                                                \
-            TestGenerated, TestSuite,                                                        \
-            testing::ValuesIn(::test_helper::TestModelManager::get().getTestModels(filter)), \
-            [](const auto& info) { return info.param.first; })
+using FilterFn = std::function<bool(const test_helper::TestModel&)>;
+std::vector<NamedModel> getNamedModels(const FilterFn& filter);
+
+std::string printGeneratedTest(const testing::TestParamInfo<GeneratedTestParam>& info);
+
+#define INSTANTIATE_GENERATED_TEST(TestSuite, filter)                                     \
+    INSTANTIATE_TEST_SUITE_P(TestGenerated, TestSuite,                                    \
+                             testing::Combine(testing::ValuesIn(getNamedDevices()),       \
+                                              testing::ValuesIn(getNamedModels(filter))), \
+                             printGeneratedTest)
 
 // Tag for the validation tests, instantiated in VtsHalNeuralnetworks.cpp.
 // TODO: Clean up the hierarchy for ValidationTest.
 class ValidationTest : public GeneratedTestBase {};
 
-Model createModel(const ::test_helper::TestModel& testModel);
+Model createModel(const test_helper::TestModel& testModel);
 
 }  // namespace android::hardware::neuralnetworks::V1_1::vts::functional
 
diff --git a/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.cpp b/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.cpp
index d53d43e..d56d40b 100644
--- a/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.cpp
+++ b/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.cpp
@@ -17,13 +17,15 @@
 #define LOG_TAG "neuralnetworks_hidl_hal_test"
 
 #include "VtsHalNeuralnetworks.h"
+#include <android-base/logging.h>
+#include <hidl/ServiceManagement.h>
+#include <string>
+#include <utility>
 #include "1.0/Callbacks.h"
 #include "1.0/Utils.h"
 #include "GeneratedTestHarness.h"
 #include "TestHarness.h"
 
-#include <android-base/logging.h>
-
 namespace android::hardware::neuralnetworks::V1_1::vts::functional {
 
 using V1_0::ErrorStatus;
@@ -79,34 +81,39 @@
     ASSERT_NE(nullptr, preparedModel->get());
 }
 
-// A class for test environment setup
-NeuralnetworksHidlEnvironment* NeuralnetworksHidlEnvironment::getInstance() {
-    // This has to return a "new" object because it is freed inside
-    // testing::AddGlobalTestEnvironment when the gtest is being torn down
-    static NeuralnetworksHidlEnvironment* instance = new NeuralnetworksHidlEnvironment();
-    return instance;
-}
-
-void NeuralnetworksHidlEnvironment::registerTestServices() {
-    registerTestService<IDevice>();
-}
-
-// The main test class for NEURALNETWORK HIDL HAL.
 void NeuralnetworksHidlTest::SetUp() {
-    testing::VtsHalHidlTargetTestBase::SetUp();
-
-#ifdef PRESUBMIT_NOT_VTS
-    const std::string name =
-            NeuralnetworksHidlEnvironment::getInstance()->getServiceName<IDevice>();
-    const std::string sampleDriver = "sample-";
-    if (kDevice == nullptr && name.substr(0, sampleDriver.size()) == sampleDriver) {
-        GTEST_SKIP();
-    }
-#endif  // PRESUBMIT_NOT_VTS
-
-    ASSERT_NE(nullptr, kDevice.get());
+    testing::TestWithParam<NeuralnetworksHidlTestParam>::SetUp();
+    ASSERT_NE(kDevice, nullptr);
 }
 
+static NamedDevice makeNamedDevice(const std::string& name) {
+    return {name, IDevice::getService(name)};
+}
+
+static std::vector<NamedDevice> getNamedDevicesImpl() {
+    // Retrieves the name of all service instances that implement IDevice,
+    // including any Lazy HAL instances.
+    const std::vector<std::string> names = hardware::getAllHalInstanceNames(IDevice::descriptor);
+
+    // Get a handle to each device and pair it with its name.
+    std::vector<NamedDevice> namedDevices;
+    namedDevices.reserve(names.size());
+    std::transform(names.begin(), names.end(), std::back_inserter(namedDevices), makeNamedDevice);
+    return namedDevices;
+}
+
+const std::vector<NamedDevice>& getNamedDevices() {
+    const static std::vector<NamedDevice> devices = getNamedDevicesImpl();
+    return devices;
+}
+
+std::string printNeuralnetworksHidlTest(
+        const testing::TestParamInfo<NeuralnetworksHidlTestParam>& info) {
+    return gtestCompliantName(getName(info.param));
+}
+
+INSTANTIATE_DEVICE_TEST(NeuralnetworksHidlTest);
+
 // Forward declaration from ValidateModel.cpp
 void validateModel(const sp<IDevice>& device, const Model& model);
 // Forward declaration from ValidateRequest.cpp
@@ -133,14 +140,3 @@
 INSTANTIATE_GENERATED_TEST(ValidationTest, [](const test_helper::TestModel&) { return true; });
 
 }  // namespace android::hardware::neuralnetworks::V1_1::vts::functional
-
-using android::hardware::neuralnetworks::V1_1::vts::functional::NeuralnetworksHidlEnvironment;
-
-int main(int argc, char** argv) {
-    testing::AddGlobalTestEnvironment(NeuralnetworksHidlEnvironment::getInstance());
-    testing::InitGoogleTest(&argc, argv);
-    NeuralnetworksHidlEnvironment::getInstance()->init(&argc, argv);
-
-    int status = RUN_ALL_TESTS();
-    return status;
-}
diff --git a/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.h b/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.h
index 9d6194a..e879d84 100644
--- a/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.h
+++ b/neuralnetworks/1.1/vts/functional/VtsHalNeuralnetworks.h
@@ -17,41 +17,33 @@
 #ifndef ANDROID_HARDWARE_NEURALNETWORKS_V1_1_VTS_HAL_NEURALNETWORKS_H
 #define ANDROID_HARDWARE_NEURALNETWORKS_V1_1_VTS_HAL_NEURALNETWORKS_H
 
-#include <android/hardware/neuralnetworks/1.0/types.h>
+#include <android/hardware/neuralnetworks/1.0/IPreparedModel.h>
 #include <android/hardware/neuralnetworks/1.1/IDevice.h>
 #include <android/hardware/neuralnetworks/1.1/types.h>
-
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
-
-#include <android-base/macros.h>
 #include <gtest/gtest.h>
+#include <vector>
+#include "1.0/Utils.h"
 
 namespace android::hardware::neuralnetworks::V1_1::vts::functional {
 
-// A class for test environment setup
-class NeuralnetworksHidlEnvironment : public testing::VtsHalHidlTargetTestEnvBase {
-    DISALLOW_COPY_AND_ASSIGN(NeuralnetworksHidlEnvironment);
-    NeuralnetworksHidlEnvironment() = default;
+using NamedDevice = Named<sp<IDevice>>;
+using NeuralnetworksHidlTestParam = NamedDevice;
 
-  public:
-    static NeuralnetworksHidlEnvironment* getInstance();
-    void registerTestServices() override;
-};
-
-// The main test class for NEURALNETWORKS HIDL HAL.
-class NeuralnetworksHidlTest : public testing::VtsHalHidlTargetTestBase {
-    DISALLOW_COPY_AND_ASSIGN(NeuralnetworksHidlTest);
-
-  public:
-    NeuralnetworksHidlTest() = default;
-    void SetUp() override;
-
+class NeuralnetworksHidlTest : public testing::TestWithParam<NeuralnetworksHidlTestParam> {
   protected:
-    const sp<IDevice> kDevice = testing::VtsHalHidlTargetTestBase::getService<IDevice>(
-            NeuralnetworksHidlEnvironment::getInstance());
+    void SetUp() override;
+    const sp<IDevice> kDevice = getData(GetParam());
 };
 
+const std::vector<NamedDevice>& getNamedDevices();
+
+std::string printNeuralnetworksHidlTest(
+        const testing::TestParamInfo<NeuralnetworksHidlTestParam>& info);
+
+#define INSTANTIATE_DEVICE_TEST(TestSuite)                                                 \
+    INSTANTIATE_TEST_SUITE_P(PerInstance, TestSuite, testing::ValuesIn(getNamedDevices()), \
+                             printNeuralnetworksHidlTest)
+
 // Create an IPreparedModel object. If the model cannot be prepared,
 // "preparedModel" will be nullptr instead.
 void createPreparedModel(const sp<IDevice>& device, const Model& model,