add testing trace

app/src/main/java/com/example/hpostesting/presentation/hemocube/HemoCubeFragment.kt

@@ -28,6 +28,7 @@ import com.google.firebase.crashlytics.ktx.crashlytics
 import com.google.firebase.firestore.FirebaseFirestore
 import com.google.firebase.firestore.ktx.firestore
 import com.google.firebase.ktx.Firebase
+import com.google.firebase.perf.ktx.performance
 import `in`.sminnovations.hpostesting.R
 import `in`.sminnovations.hpostesting.databinding.FragmentHemoCubeReferenceBinding
 import kotlinx.coroutines.Dispatchers
@@ -48,6 +49,8 @@ class HemoCubeFragment : Fragment() {
     private var isUsingExistingBuffer = false
     private var isTestOngoing = false
     private var startListening = MutableLiveData<Boolean>(false)
+    val testingTrace = Firebase.performance.newTrace("testing_trace")
+
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?,
     ): View {
@@ -245,6 +248,7 @@ class HemoCubeFragment : Fragment() {
             stringData.contains("#Buffer Completed") -> showStartSampleDialog()
             stringData.contains("#Sample Completed") -> {
                 fetchResult()
+                testingTrace.stop()
             }
 
             stringData.contains("RESULT") || resultData.contains("REND") -> {
@@ -469,6 +473,7 @@ class HemoCubeFragment : Fragment() {
     }
 
     private fun startSampleProcess() {
+        testingTrace.start()
         hemoCubeViewModel.progressBar.postValue(true)
 
         (activity as HemocubeActivity).mService.sendAndListenToHemoCube(HemoCubeCommands.startSample,