Updating split screen tests

Updating split screen tests:
- Adding the assertions visibleWindowsShownMoreThanOneConsecutiveEntry and visibleLayersShownMoreThanOneConsecutiveEntry for all the split screen tests (the layer one is disabled as we need ag/13051160 to ignore one layer).
- Replacing some assertions for other that check more things (i.e. replacing the dockedStackDividerIsVisible assertion for dockedStackDividerBecomesVisible).
- Adding some new assertions to the current tests in order to check for more things.

Adding new WM and layer assertions to Flicker tests to avoid repeating code:
- appWindowBecomesVisible
- layerBecomesVisible
- layerBecomesInvisible

Adding new layer assertions to WM shell to avoid repeating code:
- dockedStackDividerBecomesVisible
- dockedStackDividerBecomesInvisible

Test: atest WMShellFlickerTests
Bug: b/171049797
Change-Id: I2bbb23a1cf92df16ee6292e5da4644936a6d99e5

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/CommonAssertions.kt

@@ -17,6 +17,7 @@
 package com.android.wm.shell.flicker
 
 import android.graphics.Region
+import com.android.server.wm.flicker.DOCKED_STACK_DIVIDER
 import com.android.server.wm.flicker.dsl.EventLogAssertion
 import com.android.server.wm.flicker.dsl.LayersAssertion
 import com.android.server.wm.flicker.helpers.WindowUtils
@@ -51,6 +52,30 @@ fun LayersAssertion.dockedStackDividerIsVisible(
     }
 }
 
+@JvmOverloads
+fun LayersAssertion.dockedStackDividerBecomesVisible(
+    bugId: Int = 0,
+    enabled: Boolean = bugId == 0
+) {
+    all("dividerLayerBecomesVisible") {
+        this.hidesLayer(DOCKED_STACK_DIVIDER)
+                .then()
+                .showsLayer(DOCKED_STACK_DIVIDER)
+    }
+}
+
+@JvmOverloads
+fun LayersAssertion.dockedStackDividerBecomesInvisible(
+    bugId: Int = 0,
+    enabled: Boolean = bugId == 0
+) {
+    all("dividerLayerBecomesInvisible") {
+        this.showsLayer(DOCKED_STACK_DIVIDER)
+                .then()
+                .hidesLayer(DOCKED_STACK_DIVIDER)
+    }
+}
+
 @JvmOverloads
 fun LayersAssertion.dockedStackDividerIsInvisible(
     bugId: Int = 0,

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/EnterLegacySplitScreenTest.kt

@@ -29,7 +29,6 @@ import com.android.server.wm.flicker.helpers.launchSplitScreen
 import com.android.server.wm.flicker.helpers.openQuickstep
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.wm.shell.flicker.dockedStackDividerIsInvisible
-import com.android.wm.shell.flicker.dockedStackDividerIsVisible
 import com.android.wm.shell.flicker.helpers.SplitScreenHelper.Companion.TEST_REPETITIONS
 import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
 import com.android.server.wm.flicker.statusBarLayerIsAlwaysVisible
@@ -38,6 +37,9 @@ import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
 import com.android.wm.shell.flicker.dockedStackPrimaryBoundsIsVisible
 import com.android.wm.shell.flicker.dockedStackSecondaryBoundsIsVisible
 import org.junit.Assert
+import com.android.wm.shell.flicker.dockedStackDividerBecomesVisible
+import com.android.server.wm.flicker.visibleWindowsShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.visibleLayersShownMoreThanOneConsecutiveEntry
 import org.junit.FixMethodOrder
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -46,7 +48,7 @@ import org.junit.runners.Parameterized
 
 /**
  * Test SplitScreen launch.
- * To run this test: `atest WMShellFlickerTests:EnterSplitScreenTest`
+ * To run this test: `atest WMShellFlickerTests:EnterLegacySplitScreenTest`
  */
 @Presubmit
 @RequiresDevice
@@ -81,10 +83,16 @@ class EnterLegacySplitScreenTest(
                 layersTrace {
                     navBarLayerIsAlwaysVisible()
                     statusBarLayerIsAlwaysVisible()
+                    visibleLayersShownMoreThanOneConsecutiveEntry(
+                            listOf(launcherPackageName, splitScreenApp.defaultWindowName,
+                                    secondaryApp.defaultWindowName,
+                                    nonResizeableApp.defaultWindowName)
+                    )
                 }
                 windowManagerTrace {
                     navBarWindowIsAlwaysVisible()
                     statusBarWindowIsAlwaysVisible()
+                    visibleWindowsShownMoreThanOneConsecutiveEntry(listOf(launcherPackageName))
                 }
             }
         }
@@ -103,9 +111,9 @@ class EnterLegacySplitScreenTest(
             }
             assertions {
                 layersTrace {
-                    dockedStackDividerIsVisible()
                     dockedStackPrimaryBoundsIsVisible(
                             rotation, splitScreenApp.defaultWindowName, 169271943)
+                    dockedStackDividerBecomesVisible()
                 }
                 windowManagerTrace {
                     end {
@@ -132,11 +140,11 @@ class EnterLegacySplitScreenTest(
             }
             assertions {
                 layersTrace {
-                    dockedStackDividerIsVisible()
                     dockedStackPrimaryBoundsIsVisible(
                             rotation, splitScreenApp.defaultWindowName, 169271943)
                     dockedStackSecondaryBoundsIsVisible(
                             rotation, secondaryApp.defaultWindowName, 169271943)
+                    dockedStackDividerBecomesVisible()
                 }
                 windowManagerTrace {
                     end {

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/ExitLegacySplitScreenTest.kt

@@ -21,6 +21,11 @@ import android.util.Rational
 import android.view.Surface
 import androidx.test.filters.FlakyTest
 import androidx.test.filters.RequiresDevice
+import com.android.server.wm.flicker.visibleLayersShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.visibleWindowsShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
+import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
+import com.android.server.wm.flicker.layerBecomesInvisible
 import com.android.server.wm.flicker.dsl.FlickerBuilder
 import com.android.server.wm.flicker.dsl.runWithFlicker
 import com.android.server.wm.flicker.helpers.exitSplitScreen
@@ -29,8 +34,6 @@ import com.android.server.wm.flicker.helpers.resizeSplitScreen
 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
-import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
-import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
 import org.junit.FixMethodOrder
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -39,7 +42,7 @@ import org.junit.runners.Parameterized
 
 /**
  * Test exit SplitScreen mode.
- * To run this test: `atest WMShellFlickerTests:ExitSplitScreenTest`
+ * To run this test: `atest WMShellFlickerTests:ExitLegacySplitScreenTest`
  */
 @Presubmit
 @RequiresDevice
@@ -71,6 +74,15 @@ class ExitLegacySplitScreenTest(
                     secondaryApp.exit()
                 }
             }
+            assertions {
+                windowManagerTrace {
+                    visibleWindowsShownMoreThanOneConsecutiveEntry()
+                }
+                layersTrace {
+                    visibleLayersShownMoreThanOneConsecutiveEntry(
+                            listOf(launcherPackageName))
+                }
+            }
         }
 
     @Test
@@ -87,6 +99,7 @@ class ExitLegacySplitScreenTest(
             assertions {
                 layersTrace {
                     dockedStackDividerIsInvisible()
+                    layerBecomesInvisible(splitScreenApp.defaultWindowName)
                 }
                 windowManagerTrace {
                     navBarWindowIsAlwaysVisible()

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/LegacySplitScreenToLauncherTest.kt

@@ -17,10 +17,10 @@
 package com.android.wm.shell.flicker.legacysplitscreen
 
 import android.platform.test.annotations.Presubmit
+import android.support.test.launcherhelper.LauncherStrategyFactory
 import android.view.Surface
 import androidx.test.filters.RequiresDevice
 import androidx.test.platform.app.InstrumentationRegistry
-import com.android.server.wm.flicker.DOCKED_STACK_DIVIDER
 import com.android.server.wm.flicker.Flicker
 import com.android.server.wm.flicker.FlickerTestRunner
 import com.android.server.wm.flicker.FlickerTestRunnerFactory
@@ -35,12 +35,16 @@ import com.android.server.wm.flicker.helpers.setRotation
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.server.wm.flicker.navBarLayerIsAlwaysVisible
 import com.android.server.wm.flicker.navBarLayerRotatesAndScales
+import com.android.server.wm.flicker.visibleWindowsShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.visibleLayersShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.layerBecomesInvisible
 import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
 import com.android.server.wm.flicker.noUncoveredRegions
 import com.android.server.wm.flicker.repetitions
 import com.android.server.wm.flicker.statusBarLayerIsAlwaysVisible
 import com.android.server.wm.flicker.statusBarLayerRotatesScales
 import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
+import com.android.wm.shell.flicker.dockedStackDividerBecomesInvisible
 import org.junit.FixMethodOrder
 import org.junit.runner.RunWith
 import org.junit.runners.MethodSorters
@@ -48,7 +52,7 @@ import org.junit.runners.Parameterized
 
 /**
  * Test open app to split screen.
- * To run this test: `atest WMShellFlickerTests:SplitScreenToLauncherTest`
+ * To run this test: `atest WMShellFlickerTests:LegacySplitScreenToLauncherTest`
  */
 @Presubmit
 @RequiresDevice
@@ -63,6 +67,8 @@ class LegacySplitScreenToLauncherTest(
         @JvmStatic
         fun getParams(): Collection<Array<Any>> {
             val instrumentation = InstrumentationRegistry.getInstrumentation()
+            val launcherPackageName = LauncherStrategyFactory.getInstance(instrumentation)
+                    .launcherStrategy.supportedLauncherPackage
             val testApp = StandardAppHelper(instrumentation,
                 "com.android.wm.shell.flicker.testapp", "SimpleApp")
 
@@ -101,6 +107,7 @@ class LegacySplitScreenToLauncherTest(
                         windowManagerTrace {
                             navBarWindowIsAlwaysVisible()
                             statusBarWindowIsAlwaysVisible()
+                            visibleWindowsShownMoreThanOneConsecutiveEntry()
                         }
 
                         layersTrace {
@@ -109,19 +116,13 @@ class LegacySplitScreenToLauncherTest(
                             noUncoveredRegions(configuration.endRotation)
                             navBarLayerRotatesAndScales(configuration.endRotation)
                             statusBarLayerRotatesScales(configuration.endRotation)
+                            visibleLayersShownMoreThanOneConsecutiveEntry(
+                                    listOf(launcherPackageName))
 
                             // b/161435597 causes the test not to work on 90 degrees
-                            all("dividerLayerBecomesInvisible") {
-                                this.showsLayer(DOCKED_STACK_DIVIDER)
-                                    .then()
-                                    .hidesLayer(DOCKED_STACK_DIVIDER)
-                            }
+                            dockedStackDividerBecomesInvisible()
 
-                            all("appLayerBecomesInvisible") {
-                                this.showsLayer(testApp.getPackage())
-                                    .then()
-                                    .hidesLayer(testApp.getPackage())
-                            }
+                            layerBecomesInvisible(testApp.getPackage())
                         }
 
                         eventLog {

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/OpenAppToLegacySplitScreenTest.kt

@@ -17,10 +17,10 @@
 package com.android.wm.shell.flicker.legacysplitscreen
 
 import android.platform.test.annotations.Presubmit
+import android.support.test.launcherhelper.LauncherStrategyFactory
 import android.view.Surface
 import androidx.test.filters.RequiresDevice
 import androidx.test.platform.app.InstrumentationRegistry
-import com.android.server.wm.flicker.DOCKED_STACK_DIVIDER
 import com.android.server.wm.flicker.Flicker
 import com.android.server.wm.flicker.FlickerTestRunner
 import com.android.server.wm.flicker.FlickerTestRunnerFactory
@@ -35,12 +35,17 @@ import com.android.server.wm.flicker.helpers.setRotation
 import com.android.server.wm.flicker.helpers.wakeUpAndGoToHomeScreen
 import com.android.server.wm.flicker.navBarLayerIsAlwaysVisible
 import com.android.server.wm.flicker.navBarLayerRotatesAndScales
+import com.android.server.wm.flicker.appWindowBecomesVisible
+import com.android.server.wm.flicker.visibleWindowsShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.visibleLayersShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.layerBecomesVisible
 import com.android.server.wm.flicker.navBarWindowIsAlwaysVisible
 import com.android.server.wm.flicker.noUncoveredRegions
 import com.android.server.wm.flicker.repetitions
 import com.android.server.wm.flicker.statusBarLayerIsAlwaysVisible
 import com.android.server.wm.flicker.statusBarLayerRotatesScales
 import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
+import com.android.wm.shell.flicker.dockedStackDividerBecomesVisible
 import org.junit.FixMethodOrder
 import org.junit.runner.RunWith
 import org.junit.runners.MethodSorters
@@ -48,7 +53,7 @@ import org.junit.runners.Parameterized
 
 /**
  * Test open app to split screen.
- * To run this test: `atest WMShellFlickerTests:OpenAppToSplitScreenTest`
+ * To run this test: `atest WMShellFlickerTests:OpenAppToLegacySplitScreenTest`
  */
 @Presubmit
 @RequiresDevice
@@ -63,6 +68,8 @@ class OpenAppToLegacySplitScreenTest(
         @JvmStatic
         fun getParams(): Collection<Array<Any>> {
             val instrumentation = InstrumentationRegistry.getInstrumentation()
+            val launcherPackageName = LauncherStrategyFactory.getInstance(instrumentation)
+                    .launcherStrategy.supportedLauncherPackage
             val testApp = StandardAppHelper(instrumentation,
                 "com.android.wm.shell.flicker.testapp", "SimpleApp")
 
@@ -79,6 +86,7 @@ class OpenAppToLegacySplitScreenTest(
                         }
                         eachRun {
                             testApp.open()
+                            device.pressHome()
                             this.setRotation(configuration.endRotation)
                         }
                     }
@@ -99,6 +107,9 @@ class OpenAppToLegacySplitScreenTest(
                         windowManagerTrace {
                             navBarWindowIsAlwaysVisible()
                             statusBarWindowIsAlwaysVisible()
+                            visibleWindowsShownMoreThanOneConsecutiveEntry()
+
+                            appWindowBecomesVisible(testApp.getPackage())
                         }
 
                         layersTrace {
@@ -108,12 +119,11 @@ class OpenAppToLegacySplitScreenTest(
                             navBarLayerRotatesAndScales(configuration.endRotation,
                                 bugId = 140855415)
                             statusBarLayerRotatesScales(configuration.endRotation)
+                            visibleLayersShownMoreThanOneConsecutiveEntry(
+                                    listOf(launcherPackageName))
 
-                            all("dividerLayerBecomesVisible") {
-                                this.hidesLayer(DOCKED_STACK_DIVIDER)
-                                    .then()
-                                    .showsLayer(DOCKED_STACK_DIVIDER)
-                            }
+                            dockedStackDividerBecomesVisible()
+                            layerBecomesVisible(testApp.getPackage())
                         }
 
                         eventLog {

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/ResizeLegacySplitScreenTest.kt

@@ -47,6 +47,8 @@ import com.android.server.wm.flicker.repetitions
 import com.android.server.wm.flicker.startRotation
 import com.android.server.wm.flicker.statusBarLayerIsAlwaysVisible
 import com.android.server.wm.flicker.statusBarLayerRotatesScales
+import com.android.server.wm.flicker.visibleWindowsShownMoreThanOneConsecutiveEntry
+import com.android.server.wm.flicker.visibleLayersShownMoreThanOneConsecutiveEntry
 import com.android.server.wm.flicker.statusBarWindowIsAlwaysVisible
 import org.junit.FixMethodOrder
 import org.junit.runner.RunWith
@@ -55,7 +57,7 @@ import org.junit.runners.Parameterized
 
 /**
  * Test split screen resizing window transitions.
- * To run this test: `atest WMShellFlickerTests:ResizeSplitScreenTest`
+ * To run this test: `atest WMShellFlickerTests:ResizeLegacySplitScreenTest`
  *
  * Currently it runs only in 0 degrees because of b/156100803
  */
@@ -131,6 +133,7 @@ class ResizeLegacySplitScreenTest(
                         windowManagerTrace {
                             navBarWindowIsAlwaysVisible()
                             statusBarWindowIsAlwaysVisible()
+                            visibleWindowsShownMoreThanOneConsecutiveEntry()
 
                             all("topAppWindowIsAlwaysVisible", bugId = 156223549) {
                                 this.showsAppWindow(sSimpleActivity)
@@ -147,6 +150,7 @@ class ResizeLegacySplitScreenTest(
                             noUncoveredRegions(configuration.endRotation)
                             navBarLayerRotatesAndScales(configuration.endRotation)
                             statusBarLayerRotatesScales(configuration.endRotation)
+                            visibleLayersShownMoreThanOneConsecutiveEntry()
 
                             all("topAppLayerIsAlwaysVisible") {
                                 this.showsLayer(sSimpleActivity)

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/legacysplitscreen/SplitScreenTestBase.kt

@@ -16,6 +16,7 @@
 
 package com.android.wm.shell.flicker.legacysplitscreen
 
+import android.support.test.launcherhelper.LauncherStrategyFactory
 import com.android.wm.shell.flicker.NonRotationTestBase
 import com.android.wm.shell.flicker.TEST_APP_NONRESIZEABLE_LABEL
 import com.android.wm.shell.flicker.TEST_APP_SPLITSCREEN_PRIMARY_LABEL
@@ -36,4 +37,6 @@ abstract class SplitScreenTestBase(
     protected val nonResizeableApp = SplitScreenHelper(instrumentation,
             TEST_APP_NONRESIZEABLE_LABEL,
             Components.NonResizeableActivity())
+    protected val launcherPackageName = LauncherStrategyFactory.getInstance(instrumentation)
+            .launcherStrategy.supportedLauncherPackage
 }

libs/WindowManager/Shell/tests/flicker/src/com/android/wm/shell/flicker/pip/PipLegacySplitScreenTest.kt

@@ -41,7 +41,7 @@ import org.junit.runners.Parameterized
 
 /**
  * Test Pip with split-screen.
- * To run this test: `atest WMShellFlickerTests:PipSplitScreenTest`
+ * To run this test: `atest WMShellFlickerTests:PipLegacySplitScreenTest`
  */
 @RequiresDevice
 @RunWith(Parameterized::class)