This is command line tool test data generator project based on online solution http://www.convertcsv.com/generate-test-data.htm.

When you generate test data online at http://www.convertcsv.com/generate-test-data.htm your browser can only generate up to 50-100K rows, then it hangs. This tool is a good alternative if you want to generate MILLIONS test data rows, using the same definition syntax as used in online web service.

node generator.js <COLUMNS_DEFINITION NUMBER_OF_ROWS> <OUT_FILE>

COLUMNS_DEFINITION - columns definition from http://www.convertcsv.com/generate-test-data.htm (or see below "Allowed Keywords")

NUMBER_OF_ROWS - number of rows to generate

OUT_FILE - output file path

node generator.js "email,first,last,age,street,city,state,zip,digid,date(3),latitude,longitude,pick(RED|BLUE|YELLOW|GREEN|WHITE),string" 10000 out1.csv

Keyword: Description

age: person's age 1 to 120

alpha alpha(n): string of letters a to z mixed case and if n specified then exactly n length long, i.e. alpha(5)

birthday: date of birth in mm/dd/yyyy format or birthday(2) for dd/mm/yyyy

bool: true or false

char: 1 single character of a letter or digits or !@#$%^&*()

city: cities

ccnumber: Credit Card Number

date date(2) or date(3) or date(4): date in mm/dd/yyyy format or

date(2) for dd/mm/yyyy or date(3) for yyyy/mm/dd or date(4) for yyyymmdd digit digit(n): digit - 5-20 digits

digits(n) where n is a number will generate a string exactly that long, i.e. digit(5) See also: integer,float,natural, seq

dollar: Dollar amount in format of $99999.99

domain: domain name

email: dummy email address

first: First name

float: Floating/Real number with at most 4 digits to right of decimal See also: integer,natural,seq,digit

gender: Male or Female

integer: Integer value - includes negatives. See also: natural,float,seq,digit

last: Last name

latitude: Latitude

longitude: Longitude

mi: middle initial - 1 letter

name: full person's name

natural natural(n): Integer value 0 or above, or

natural(n) where n is maximum integer value See also: integer,float,seq,digit

paragraph: paragraph of words - 3 to 7 sentences

phone: US phone number 999-999-9999

pick(pick1|pick2|...): choose one of choices separated by |

postal: Canadian postal (see also province)

province: Canadian pronvince (see also postal)

seq seq(n): numeric integer sequence starting at 1 or n and incremented by 1

seq(n) - sequence starts at integer n, i.e. seq(1000)

sentence: sentence words - 12 to 18 words

state: state

street: street address

string string(n): random string value of letters,digits, and !@#$%^&*()

string(n) where n is length. word: words - 5-6 letters

yn: Y or N

zip: 5 digit US zip code

zip9: 9 digit US zip code in 99999-9999 format