from tensorflow.python.framework import constant_op

    """Tests only dense inputs.
    """
    op = sparse_feature_cross_op.sparse_feature_cross([
        constant_op.constant([['batch1-FC1-F1', 'batch1-FC1-F2'],
                              ['batch2-FC1-F1', 'batch2-FC1-F2']],
                             dtypes.string),
