Add function to clear data between runs

Author: keyboardsurfer

MacrobenchmarkSample/macrobenchmark/src/main/kotlin/com/example/macrobenchmark/baselineprofile/Common.kt

@@ -16,4 +16,18 @@
 
 package com.example.macrobenchmark.baselineprofile
 
-const val TARGET_PACKAGE = "com.example.macrobenchmark.target"
+import androidx.benchmark.macro.MacrobenchmarkScope
+import androidx.test.uiautomator.UiDevice
+
+const val TARGET_PACKAGE = "com.example.macrobenchmark.target"
+
+/**
+ * Clears the application data for the package specified in the [MacrobenchmarkScope].
+ * @param scope The [MacrobenchmarkScope] providing information about the benchmark,
+ * including the package name of the app under test.
+ */
+fun UiDevice.clearData(scope: MacrobenchmarkScope) {
+    val command = "pm clear $scope.packageName"
+    val output = executeShellCommand(command)
+//    Assert.assertEquals("Success", output)
+}

MacrobenchmarkSample/macrobenchmark/src/main/kotlin/com/example/macrobenchmark/baselineprofile/LoginBaselineProfileGenerator.kt

@@ -37,6 +37,7 @@ class LoginBaselineProfileGenerator {
             maxIterations = 15,
             stableIterations = 3
         ) {
+            device.clearData(this)
             startActivityAndWait(Intent("$packageName.LOGIN_ACTIVITY"))
             device.findObject(By.res("userName")).text = "user"
             device.findObject(By.res("password")).text = "password"