Fix selecting authors

benchmarks/src/main/java/com/google/samples/apps/nowinandroid/baselineprofile/BaselineProfileGenerator.kt

@@ -48,7 +48,7 @@ class BaselineProfileGenerator {
 
             // Scroll the feed critical user journey
             forYouWaitForContent()
-            forYouSelectAuthors()
+            forYouSelectAuthors(true)
             forYouScrollFeedDownUp()
 
             // Navigate to saved screen

benchmarks/src/main/java/com/google/samples/apps/nowinandroid/foryou/ForYouActions.kt

@@ -18,11 +18,9 @@ package com.google.samples.apps.nowinandroid.foryou
 
 import androidx.benchmark.macro.MacrobenchmarkScope
 import androidx.test.uiautomator.By
-import androidx.test.uiautomator.Direction.RIGHT
 import androidx.test.uiautomator.Until
 import androidx.test.uiautomator.untilHasChildren
 import com.google.samples.apps.nowinandroid.flingElementDownUp
-import kotlin.random.Random.Default.nextInt
 
 fun MacrobenchmarkScope.forYouWaitForContent() {
     // Wait until content is loaded by checking if authors are loaded
@@ -33,21 +31,40 @@ fun MacrobenchmarkScope.forYouWaitForContent() {
     obj.wait(untilHasChildren(), 30_000)
 }
 
-fun MacrobenchmarkScope.forYouSelectAuthors() {
+/**
+ * Selects some authors, which will show the feed content for them.
+ * [recheckAuthorsIfChecked] Authors may be already checked from the previous iteration.
+ */
+fun MacrobenchmarkScope.forYouSelectAuthors(recheckAuthorsIfChecked: Boolean = false) {
     val authors = device.findObject(By.res("forYou:authors"))
 
-    // set gesture margin from sides not to trigger system gesture navigation
+    // Set gesture margin from sides not to trigger system gesture navigation
     val horizontalMargin = 10 * authors.visibleBounds.width() / 100
     authors.setGestureMargins(horizontalMargin, 0, horizontalMargin, 0)
 
-    // select some random authors to show some feed content
-    repeat(3) {
-        // picks randomly from visible authors
-        val randomChild = nextInt(0, authors.childCount)
-        val author = authors.children[randomChild]
-        author.click()
-        device.waitForIdle()
-        authors.fling(RIGHT)
+    // Select some authors to show some feed content
+    repeat(3) { index ->
+        val author = authors.children[index % authors.childCount]
+
+        when {
+            // Author wasn't checked, so just do that
+            !author.isChecked -> {
+                author.click()
+                device.waitForIdle()
+            }
+
+            // The author was checked already and we want to recheck it, so just do it twice
+            recheckAuthorsIfChecked -> {
+                repeat(2) {
+                    author.click()
+                    device.waitForIdle()
+                }
+            }
+
+            else -> {
+                // The author is checked, but we don't recheck it
+            }
+        }
     }
 }