How to use the ddlparse.ddlparse.DdlParse function in ddlparse

def test_parse(test_case, parse_pattern):
    # Get test ddl script
    data = TEST_DATA[test_case]

    # Create parse object instance
    ddlparse = DdlParse()

    # Set source database option

    # Set source database option & Parse ddl
    if parse_pattern == DDL_SET_PATTERN.method:
        if data["database"] is not None:
            table = ddlparse.parse(data["ddl"], data["database"])
        else:
            table = ddlparse.parse(data["ddl"])
    else:
        if data["database"] is not None:
            ddlparse.source_database = data["database"]
        ddlparse.ddl = data["ddl"]
        table = ddlparse.parse()

def test_set_comment():
    ddl = """
        CREATE TABLE Sample_Table (
          Col_01 integer
        );
        """

    # Parse DDL
    table = DdlParse().parse(ddl)

    # Check blank comment
    assert table.columns["Col_01"].comment is None
    assert table.columns["Col_01"].description is None

    # Check comment setter
    table.columns["Col_01"].comment = "comment_1"
    assert table.columns["Col_01"].comment == "comment_1"

    # Check description setter
    table.columns["Col_01"].description = "comment_2"
    assert table.columns["Col_01"].description == "comment_2"

def test_exception_ddl():
    # Create parse object instance
    ddlparse = DdlParse()

    # Do not set DDL

    # Error : DDL is not specified
    with pytest.raises(ValueError):
        ddlparse.parse()

def test_exception_bq_data_type():
    ddl = """
        CREATE TABLE Sample_Table (
          Col_01 NG_DATA_TYPE,
        );
        """

    # Parse DDL
    table = DdlParse().parse(ddl)

    # Error: Unknown data type
    with pytest.raises(ValueError):
        print(table.columns["col_01"].bigquery_data_type)

def test_bq_ddl(test_case):
    # Get test data
    data = TEST_DATA_DDL[test_case]

    # Parse ddl
    table = DdlParse().parse(data["source_ddl"])

    # Check generate BigQuery DDL statements of DdlParseTable
    assert table.to_bigquery_ddl() == textwrap.dedent(data["bq_ddl"][DdlParse.NAME_CASE.original])
    assert table.to_bigquery_ddl(DdlParse.NAME_CASE.original) == textwrap.dedent(data["bq_ddl"][DdlParse.NAME_CASE.original])
    assert table.to_bigquery_ddl(DdlParse.NAME_CASE.lower) == textwrap.dedent(data["bq_ddl"][DdlParse.NAME_CASE.lower])
    assert table.to_bigquery_ddl(DdlParse.NAME_CASE.upper) == textwrap.dedent(data["bq_ddl"][DdlParse.NAME_CASE.upper])