2/ Clear all recents tasks before running legacysplitscreen tests

Sometimes previous launched activity will affect the order of
current test activity in recents and cause the flicker test flaky.
Trigger openQuickStepAndClearRecentAppsFromOverview() in setup()
to ensure overview/recents is clear before the tests

Bug: 175728979
Test: atest com.android.wm.shell.flicker.legacysplitscreen
Change-Id: I6a6aae362617bb7948473aaafaab8f2c3eec0bc1
diff --git a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/EnterLegacySplitScreenTest.kt b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/EnterLegacySplitScreenTest.kt
index 5b9091f..277efa9 100644
--- a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/EnterLegacySplitScreenTest.kt
+++ b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/EnterLegacySplitScreenTest.kt
@@ -27,6 +27,7 @@
 import com.android.server.wm.flicker.helpers.isInSplitScreen
 import com.android.server.wm.flicker.helpers.launchSplitScreen
 import com.android.server.wm.flicker.helpers.openQuickstep
+import com.android.server.wm.flicker.helpers.openQuickStepAndClearRecentAppsFromOverview
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.wm.shell.flicker.dockedStackDividerIsInvisible
 import com.android.wm.shell.flicker.helpers.SplitScreenHelper.Companion.TEST_REPETITIONS
@@ -67,6 +68,7 @@
             setup {
                 eachRun {
                     uiDevice.wakeUpAndGoToHomeScreen()
+                    uiDevice.openQuickStepAndClearRecentAppsFromOverview()
                 }
             }
             teardown {
diff --git a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/ExitLegacySplitScreenTest.kt b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/ExitLegacySplitScreenTest.kt
index be7faf6..c51c73a 100644
--- a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/ExitLegacySplitScreenTest.kt
+++ b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/ExitLegacySplitScreenTest.kt
@@ -30,8 +30,11 @@
 import com.android.server.wm.flicker.dsl.runWithFlicker
 import com.android.server.wm.flicker.helpers.exitSplitScreen
 import com.android.server.wm.flicker.helpers.launchSplitScreen
+import com.android.server.wm.flicker.helpers.openQuickStepAndClearRecentAppsFromOverview
 import com.android.server.wm.flicker.helpers.resizeSplitScreen
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
+import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
+import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
 import com.android.wm.shell.flicker.dockedStackDividerIsInvisible
 import com.android.wm.shell.flicker.helpers.SplitScreenHelper.Companion.TEST_REPETITIONS
 import org.junit.FixMethodOrder
@@ -61,10 +64,9 @@
             setup {
                 eachRun {
                     uiDevice.wakeUpAndGoToHomeScreen()
-                    secondaryApp.open()
-                    uiDevice.pressHome()
-                    splitScreenApp.open()
-                    uiDevice.pressHome()
+                    uiDevice.openQuickStepAndClearRecentAppsFromOverview()
+                    secondaryApp.launchViaIntent()
+                    splitScreenApp.launchViaIntent()
                     uiDevice.launchSplitScreen()
                 }
             }
@@ -150,4 +152,4 @@
             return supportedRotations.map { arrayOf(Surface.rotationToString(it), it) }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/LegacySplitScreenToLauncherTest.kt b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/LegacySplitScreenToLauncherTest.kt
index f8df0e1..629c71f 100644
--- a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/LegacySplitScreenToLauncherTest.kt
+++ b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/LegacySplitScreenToLauncherTest.kt
@@ -31,6 +31,7 @@
 import com.android.server.wm.flicker.helpers.exitSplitScreen
 import com.android.server.wm.flicker.helpers.isInSplitScreen
 import com.android.server.wm.flicker.helpers.launchSplitScreen
+import com.android.server.wm.flicker.helpers.openQuickStepAndClearRecentAppsFromOverview
 import com.android.server.wm.flicker.helpers.setRotation
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.server.wm.flicker.navBarLayerIsAlwaysVisible
@@ -82,6 +83,7 @@
                     setup {
                         test {
                             device.wakeUpAndGoToHomeScreen()
+                            device.openQuickStepAndClearRecentAppsFromOverview()
                         }
                         eachRun {
                             testApp.open()
diff --git a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/OpenAppToLegacySplitScreenTest.kt b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/OpenAppToLegacySplitScreenTest.kt
index 134461a..af03869 100644
--- a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/OpenAppToLegacySplitScreenTest.kt
+++ b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/OpenAppToLegacySplitScreenTest.kt
@@ -24,13 +24,14 @@
 import com.android.server.wm.flicker.Flicker
 import com.android.server.wm.flicker.FlickerTestRunner
 import com.android.server.wm.flicker.FlickerTestRunnerFactory
-import com.android.server.wm.flicker.endRotation
 import com.android.server.wm.flicker.helpers.StandardAppHelper
+import com.android.server.wm.flicker.endRotation
 import com.android.server.wm.flicker.focusChanges
 import com.android.server.wm.flicker.helpers.buildTestTag
 import com.android.server.wm.flicker.helpers.exitSplitScreen
 import com.android.server.wm.flicker.helpers.isInSplitScreen
 import com.android.server.wm.flicker.helpers.launchSplitScreen
+import com.android.server.wm.flicker.helpers.openQuickStepAndClearRecentAppsFromOverview
 import com.android.server.wm.flicker.helpers.setRotation
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.server.wm.flicker.navBarLayerIsAlwaysVisible
@@ -83,6 +84,7 @@
                     setup {
                         test {
                             device.wakeUpAndGoToHomeScreen()
+                            device.openQuickStepAndClearRecentAppsFromOverview()
                         }
                         eachRun {
                             testApp.open()
diff --git a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateOneLaunchedAppTest.kt b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateOneLaunchedAppTest.kt
index ae2200c..923f2a4 100644
--- a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateOneLaunchedAppTest.kt
+++ b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateOneLaunchedAppTest.kt
@@ -23,6 +23,7 @@
 import com.android.server.wm.flicker.helpers.exitSplitScreen
 import com.android.server.wm.flicker.helpers.isInSplitScreen
 import com.android.server.wm.flicker.helpers.launchSplitScreen
+import com.android.server.wm.flicker.helpers.openQuickStepAndClearRecentAppsFromOverview
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.server.wm.flicker.navBarLayerRotatesAndScales
 import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
@@ -56,7 +57,8 @@
             }
             setup {
                 test {
-                    device.wakeUpAndGoToHomeScreen()
+                    uiDevice.wakeUpAndGoToHomeScreen()
+                    uiDevice.openQuickStepAndClearRecentAppsFromOverview()
                 }
             }
             teardown {
@@ -81,7 +83,7 @@
             }
             transitions {
                 splitScreenApp.launchViaIntent()
-                device.launchSplitScreen()
+                uiDevice.launchSplitScreen()
                 setRotation(rotation)
             }
             assertions {
@@ -114,7 +116,7 @@
             transitions {
                 splitScreenApp.launchViaIntent()
                 setRotation(rotation)
-                device.launchSplitScreen()
+                uiDevice.launchSplitScreen()
             }
             assertions {
                 layersTrace {
diff --git a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateTwoLaunchedAppTest.kt b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateTwoLaunchedAppTest.kt
index a1b44f0..4578f68 100644
--- a/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateTwoLaunchedAppTest.kt
+++ b/libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/RotateTwoLaunchedAppTest.kt
@@ -23,6 +23,7 @@
 import com.android.server.wm.flicker.helpers.exitSplitScreen
 import com.android.server.wm.flicker.helpers.isInSplitScreen
 import com.android.server.wm.flicker.helpers.launchSplitScreen
+import com.android.server.wm.flicker.helpers.openQuickStepAndClearRecentAppsFromOverview
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.server.wm.flicker.navBarLayerRotatesAndScales
 import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
@@ -57,7 +58,8 @@
             }
             setup {
                 test {
-                    device.wakeUpAndGoToHomeScreen()
+                    uiDevice.wakeUpAndGoToHomeScreen()
+                    uiDevice.openQuickStepAndClearRecentAppsFromOverview()
                 }
             }
             teardown {
@@ -83,7 +85,7 @@
             transitions {
                 secondaryApp.launchViaIntent()
                 splitScreenApp.launchViaIntent()
-                device.launchSplitScreen()
+                uiDevice.launchSplitScreen()
                 splitScreenApp.reopenAppFromOverview()
                 setRotation(rotation)
             }
@@ -121,7 +123,7 @@
                 secondaryApp.launchViaIntent()
                 splitScreenApp.launchViaIntent()
                 setRotation(rotation)
-                device.launchSplitScreen()
+                uiDevice.launchSplitScreen()
                 splitScreenApp.reopenAppFromOverview()
             }
             assertions {