Eliminating messages that launcher activity is frozen

They were ultimately caused by killing Launcher process from tests.

Now having a test info handler request to clear db.

Bug: 152629799
Change-Id: Ia81ddc3e338718c4cff08c7396b9fda1b7091024

ext_tests/src/com/android/launcher3/testing/DebugTestInformationHandler.java

@@ -18,6 +18,8 @@ package com.android.launcher3.testing;
 
 import static android.graphics.Bitmap.Config.ARGB_8888;
 
+import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
+
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Color;
@@ -28,6 +30,9 @@ import android.view.View;
 
 import androidx.annotation.Keep;
 
+import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherSettings;
+
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.LinkedList;
@@ -165,6 +170,14 @@ public class DebugTestInformationHandler extends TestInformationHandler {
                 return response;
             }
 
+            case TestProtocol.REQUEST_CLEAR_DATA: {
+                LauncherSettings.Settings.call(mContext.getContentResolver(),
+                        LauncherSettings.Settings.METHOD_CREATE_EMPTY_DB);
+                MAIN_EXECUTOR.submit(() ->
+                        LauncherAppState.getInstance(mContext).getModel().forceReload());
+                return response;
+            }
+
             default:
                 return super.call(method);
         }

src/com/android/launcher3/testing/TestProtocol.java

@@ -91,6 +91,7 @@ public final class TestProtocol {
     public static final String REQUEST_START_EVENT_LOGGING = "start-event-logging";
     public static final String REQUEST_GET_TEST_EVENTS = "get-test-events";
     public static final String REQUEST_STOP_EVENT_LOGGING = "stop-event-logging";
+    public static final String REQUEST_CLEAR_DATA = "clear-data";
 
     public static boolean sDebugTracing = false;
     public static final String REQUEST_ENABLE_DEBUG_TRACING = "enable-debug-tracing";

tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java

@@ -300,17 +300,9 @@ public abstract class AbstractLauncherUiTest {
         checkDetectedLeaks(mLauncher);
     }
 
-    protected void clearLauncherData() throws IOException, InterruptedException {
+    protected void clearLauncherData() {
-        if (TestHelpers.isInLauncherProcess()) {
+        mLauncher.clearLauncherData();
-            LauncherSettings.Settings.call(mTargetContext.getContentResolver(),
+        mLauncher.waitForLauncherInitialized();
-                    LauncherSettings.Settings.METHOD_CREATE_EMPTY_DB);
-            resetLoaderState();
-        } else {
-            clearPackageData(mDevice.getLauncherPackageName());
-            mLauncher.enableDebugTracing();
-            mLauncherPid = mLauncher.getPid();
-            mLauncher.waitForLauncherInitialized();
-        }
     }
 
     /**

tests/tapl/com/android/launcher3/tapl/LauncherInstrumentation.java

@@ -1335,6 +1335,10 @@ public final class LauncherInstrumentation {
         return tasks;
     }
 
+    public void clearLauncherData() {
+        getTestInfo(TestProtocol.REQUEST_CLEAR_DATA);
+    }
+
     public Closable eventsCheck() {
         Assert.assertTrue("Nested event checking", mEventChecker == null);
         disableSensorRotation();