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: main_test.go
    path of file: ./repos/participle/_examples/basic
    
    the code of the file until where you have to start completion: package main

import (
	"strings"
	"testing"

	require "github.com/alecthomas/assert/v2"
)

func TestExe(t *testing.T) {
	src := `5  REM inputting the argument
10  PRINT "Factorial of:"
20  INPUT A
30  LET B = 1
35  REM beginning of the loop
40  IF A <= 1 TH
    
func TestExe(t *testing.T) {
	src := `5  REM inputting the argument
10  PRINT "Factorial of:"
20  INPUT A
30  LET B = 1
35  REM beginning of the loop
40  IF A <= 1 THEN 80
50  LET B = B * A
60  LET A = A - 1
70  GOTO 40
75  REM prints the result
80  PRINT B
`
	_, err := Parse(strings.NewReader(src))
	require.NoError(t, err)
}