content: package com.android.launcher3.model;
  
  
  import static android.database.DatabaseUtils.queryNumEntries;
  
  import static com.android.launcher3.LauncherSettings.Favorites.BACKUP_TABLE_NAME;
  import static com.android.launcher3.LauncherSettings.Favorites.TABLE_NAME;
  import static com.android.launcher3.provider.LauncherDbUtils.tableExists;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import android.content.ContentValues;
  import android.graphics.Point;
  
  import com.android.launcher3.LauncherSettings.Favorites;
  import com.android.launcher3.LauncherSettings.Settings;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.robolectric.RobolectricTestRunner;
  
  /**
   * Unit tests for {@link GridBackupTable}
   */
  @RunWith(RobolectricTestRunner.class)
  public class GridBackupTableTest extends BaseGridChangesTestCase {
  
      private static final int BACKUP_ITEM_COUNT = 12;
  
      @Before
      public void setupGridData() {
          createGrid(new int[][][]{{
                  { APP_ICON, APP_ICON, SHORTCUT, SHORTCUT},
                  { SHORTCUT, SHORTCUT, NO__ICON, NO__ICON},
                  { NO__ICON, NO__ICON, SHORTCUT, SHORTCUT},
                  { APP_ICON, SHORTCUT, SHORTCUT, APP_ICON},
          }});
          assertEquals(BACKUP_ITEM_COUNT, queryNumEntries(mDb, TABLE_NAME));
      }
  
      @Test
      public void backupTableCreated() {
          GridBackupTable backupTable = new GridBackupTable(mContext, mDb, 4, 4, 4);
          assertFalse(backupTable.backupOrRestoreAsNeeded());
          Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
  
          assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
  
          // One extra entry for properties
          assertEquals(BACKUP_ITEM_COUNT + 1, queryNumEntries(mDb, BACKUP_TABLE_NAME));
      }
  
      @Test
      public void backupTableRestored() {
          assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
          Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
  
          // Delete entries
          mDb.delete(TABLE_NAME, null, null);
          assertEquals(0, queryNumEntries(mDb, TABLE_NAME));
  
          GridBackupTable backupTable = new GridBackupTable(mContext, mDb, 3, 3, 3);
          assertTrue(backupTable.backupOrRestoreAsNeeded());
  
          // Items have been restored
          assertEquals(BACKUP_ITEM_COUNT, queryNumEntries(mDb, TABLE_NAME));
  
          Point outSize = new Point();
          assertEquals(4, backupTable.getRestoreHotseatAndGridSize(outSize));
          assertEquals(4, outSize.x);
          assertEquals(4, outSize.y);
      }
  
      @Test
      public void backupTableRemovedOnAdd() {
          assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
          Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
  
          assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
  
          addItem(1, 2, DESKTOP, 1, 1);
          assertFalse(tableExists(mDb, BACKUP_TABLE_NAME));
      }
  
      @Test
      public void backupTableRemovedOnDelete() {
          assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
          Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
  
          assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
  
          mContext.getContentResolver().delete(Favorites.CONTENT_URI, null, null);
          assertFalse(tableExists(mDb, BACKUP_TABLE_NAME));
      }
  
      @Test
      public void backupTableRetainedOnUpdate() {
          assertFalse(new GridBackupTable(mContext, mDb, 4, 4, 4).backupOrRestoreAsNeeded());
          Settings.call(mContext.getContentResolver(), Settings.METHOD_REFRESH_BACKUP_TABLE);
  
          assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
  
          ContentValues values = new ContentValues();
          values.put(Favorites.RANK, 4);
          // Something was updated
          assertTrue(mContext.getContentResolver()
                  .update(Favorites.CONTENT_URI, values, null, null) > 0);
  
          // Backup table remains
          assertTrue(tableExists(mDb, BACKUP_TABLE_NAME));
      }
  }
  