health: skip VTS on healthd if vendor HAL is present.

If vendor HAL is present, healthd is not used by the framework. VTS should
skip testing it when this is the case.

Provide a --force option to the test if one wants to test healthd.

Fixes: 118852225
Test: on walleye, test healthd with and without --force.

Change-Id: I85f792f25406b1c02887a0ac273730e719003e2f
Merged-In: I85f792f25406b1c02887a0ac273730e719003e2f
(cherry picked from commit e6807ddec17da45161b5f20396776a0ba38b3680)
diff --git a/health/2.0/vts/functional/Android.bp b/health/2.0/vts/functional/Android.bp
index 4ad01b9..c4f2dc9 100644
--- a/health/2.0/vts/functional/Android.bp
+++ b/health/2.0/vts/functional/Android.bp
@@ -19,6 +19,7 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["VtsHalHealthV2_0TargetTest.cpp"],
     static_libs: [
+        "libgflags",
         "android.hardware.health@1.0",
         "android.hardware.health@2.0",
     ],
diff --git a/health/2.0/vts/functional/VtsHalHealthV2_0TargetTest.cpp b/health/2.0/vts/functional/VtsHalHealthV2_0TargetTest.cpp
index c5431e4..55b48b8 100644
--- a/health/2.0/vts/functional/VtsHalHealthV2_0TargetTest.cpp
+++ b/health/2.0/vts/functional/VtsHalHealthV2_0TargetTest.cpp
@@ -22,6 +22,7 @@
 #include <android-base/logging.h>
 #include <android/hardware/health/2.0/IHealth.h>
 #include <android/hardware/health/2.0/types.h>
+#include <gflags/gflags.h>
 
 using ::testing::AssertionFailure;
 using ::testing::AssertionResult;
@@ -29,6 +30,8 @@
 using ::testing::VtsHalHidlTargetTestBase;
 using ::testing::VtsHalHidlTargetTestEnvBase;
 
+DEFINE_bool(force, false, "Force test healthd even when the default instance is present.");
+
 namespace android {
 namespace hardware {
 namespace health {
@@ -57,6 +60,14 @@
    public:
     virtual void SetUp() override {
         std::string serviceName = HealthHidlEnvironment::Instance()->getServiceName<IHealth>();
+
+        if (serviceName == "backup" && !FLAGS_force &&
+            ::testing::VtsHalHidlTargetTestBase::getService<IHealth>() != nullptr) {
+            LOG(INFO) << "Skipping tests on healthd because the default instance is present. "
+                      << "Use --force if you really want to test healthd.";
+            GTEST_SKIP();
+        }
+
         LOG(INFO) << "get service with name:" << serviceName;
         ASSERT_FALSE(serviceName.empty());
         mHealth = ::testing::VtsHalHidlTargetTestBase::getService<IHealth>(serviceName);
@@ -269,6 +280,7 @@
     ::testing::AddGlobalTestEnvironment(HealthHidlEnvironment::Instance());
     ::testing::InitGoogleTest(&argc, argv);
     HealthHidlEnvironment::Instance()->init(&argc, argv);
+    gflags::ParseCommandLineFlags(&argc, &argv, true /* remove flags */);
     int status = RUN_ALL_TESTS();
     LOG(INFO) << "Test result = " << status;
     return status;