public void testDeleteByIdDeletesCorrectNumberOfRows() {
    String segment = "dummySegment";
    Uri uri = Uri.withAppendedPath(MyProvider.CONTENT_URI, segment);

    int actual = provider.delete(uri, "_id = ?", new String[] {"1"});

    assertEquals(1, actual);
  }
  public void testQueryBySegmentReturnsCorrectNumberOfRows() {
    String segment = "dummySegment";
    Uri uri = Uri.withAppendedPath(MyProvider.CONTENT_URI, segment);
    Cursor c = provider.query(uri, null, null, null, null);
    try {
      int actual = c.getCount();

      assertEquals(2, actual);
    } finally {
      c.close();
    }
  }