You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: common_plans_test.go
    path of file: ./repos/tidb/pkg/planner/core
    
    the code of the file until where you have to start completion: // Copyright 2023 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package core

import (
	"testing"

	"github.com/pingcap/tidb/pkg/parser"
	"github.com/pingcap/tidb/pkg/parser/ast"
	"github.com/stretchr/testify/require"
)

func TestNewLineFieldsInfo(t *testing.T) {
	cases := []struct {
		sql      string
		expected LineFieldsInfo
	}{
		{
			"load data infile 'a' into table t",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "",
				Field
    
func TestNewLineFieldsInfo(t *testing.T) {
	cases := []struct {
		sql      string
		expected LineFieldsInfo
	}{
		{
			"load data infile 'a' into table t",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "",
				FieldsEscapedBy:    "\\",
				FieldsOptEnclosed:  false,
				LinesStartingBy:    "",
				LinesTerminatedBy:  "\n",
			},
		},
		{
			"load data infile 'a' into table t fields terminated by 'a'",
			LineFieldsInfo{
				FieldsTerminatedBy: "a",
				FieldsEnclosedBy:   "",
				FieldsEscapedBy:    "\\",
				FieldsOptEnclosed:  false,
				LinesStartingBy:    "",
				LinesTerminatedBy:  "\n",
			},
		},
		{
			"load data infile 'a' into table t fields optionally enclosed by 'a'",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "a",
				FieldsEscapedBy:    "\\",
				FieldsOptEnclosed:  true,
				LinesStartingBy:    "",
				LinesTerminatedBy:  "\n",
			},
		},
		{
			"load data infile 'a' into table t fields enclosed by 'a'",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "a",
				FieldsEscapedBy:    "\\",
				FieldsOptEnclosed:  false,
				LinesStartingBy:    "",
				LinesTerminatedBy:  "\n",
			},
		},
		{
			"load data infile 'a' into table t fields escaped by 'a'",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "",
				FieldsEscapedBy:    "a",
				FieldsOptEnclosed:  false,
				LinesStartingBy:    "",
				LinesTerminatedBy:  "\n",
			},
		},
		{
			"load data infile 'a' into table t lines starting by 'a'",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "",
				FieldsEscapedBy:    "\\",
				FieldsOptEnclosed:  false,
				LinesStartingBy:    "a",
				LinesTerminatedBy:  "\n",
			},
		},
		{
			"load data infile 'a' into table t lines terminated by 'aa'",
			LineFieldsInfo{
				FieldsTerminatedBy: "\t",
				FieldsEnclosedBy:   "",
				FieldsEscapedBy:    "\\",
				FieldsOptEnclosed:  false,
				LinesStartingBy:    "",
				LinesTerminatedBy:  "aa",
			},
		},
	}
	p := parser.New()
	for _, c := range cases {
		stmt, err := p.ParseOneStmt(c.sql, "", "")
		require.NoError(t, err, c.sql)
		ldStmt := stmt.(*ast.LoadDataStmt)
		lineFieldsInfo := NewLineFieldsInfo(ldStmt.FieldsInfo, ldStmt.LinesInfo)
		require.Equal(t, c.expected, lineFieldsInfo)
	}
}