@Test
  public void onUpgradeEmpty() {
    mProvider.onUpgrade(mDatabase, 2, 3);

    verifyNoMoreInteractions(mDatabase);
  }
  @Test
  public void onUpgrade() {
    mProvider.onUpgrade(mDatabase, 1, 2);

    verify(mDatabase).execSQL("ALTER TABLE foos ADD COLUMN late FLOAT NOT NULL UNIQUE;");
  }