DEV Community

Cover image for gen_data: A Powerful Tool for Test Data Generation
Le Vuong
Le Vuong

Posted on • Edited on

gen_data: A Powerful Tool for Test Data Generation

#data #tool #productivity #python

Introduction

When testing software applications, one of the major challenges developers and testers face is the need for large, realistic datasets to simulate real-world scenarios. That's where gen_data comes in. This tool is designed to generate large amounts of data in CSV format, tailored for testing purposes.

usage: gen_data [-h] -r ROWS [-c COLUMNS] [-t TITLES] csvfile Generate CSV file with specfied number of rows, and column types. positional arguments: csvfile options: -h, --help show this help message and exit -r ROWS, --rows ROWS number of rows -c COLUMNS, --columns COLUMNS List of colume type, in this format: "t t t:n ..." Where t is type (number), n is column length. -t TITLES, --titles TITLES List of column titles List of supported types: BOOL=1 INT=2 STRING=3 FLOAT=4 DATE=5 DATETIME=6
Enter fullscreen mode Exit fullscreen mode

How to setup? 

# Clone the repo $ git clone git@github.com:patfinder/gen_data.git # Move to the `gen_data` folder. Then enter below command to setup the tool. # After this, `gen_data` will become a script command that you can execute directly. $ pip install -e . # Show info of installed script $ pip show gen_data Name: gen-data Version: 0.0.1 Summary: A convenient tool for generating big test data. Home-page: https://github.com/patfinder/gen_data/ Author: Le Vuong Nguyen Author-email: vuong.se@gmail.com License: UNKNOWN Location: ~/myrepos/gen_data Requires: Required-by:
Enter fullscreen mode Exit fullscreen mode

Usage 

# Show Help for the command $ gen_data --help # Run sample command to generate csv with 5 rows # and columns of (bool, string, string with length of 20, int) and column titles # List of supported types: BOOL=1 INT=2 STRING=3 FLOAT=4 DATE=5 DATETIME=6 $ gen_data f1.csv -r 5 -c"1,3,3:20,2" -t"is_active,name,job_desc,score" # Sample output of above command is f1.csv with below content $ cat f1.csv id,is_active,name,job_desc,score 1,False,Louis Martinez,Really tonight we.,559 2,True,Larry Williams,Moment word camera.,845 3,True,Brandon Williams,Wear your consumer.,677 4,False,Chelsea Zamora,Identify itself let.,384 5,True,Jonathan Collier MD,Offer popular.,502
Enter fullscreen mode Exit fullscreen mode

Top comments (0)