testcase-gen

Testcase Generator

Generate testcases by simple but highly customizable rules.

Usage

Install

npm i testcase-gen

Generate Testcases by Rules

For example: sum of two numbers.

const { Generator } = require("testcase-gen");

const rules = [
    {
        name: "2 Positives (1 ~ 99999)",
        regex: /[1-9]\d{0,4} [1-9]\d{0,4}/,
        repeat: 20,
    },
    {
        name: "2 Negatives (-1 ~ -99999)",
        regex: /-[1-9]\d{0,4} -[1-9]\d{0,4}/,
        repeat: 20,
    },
    {
        name: "1 Zero, 1 Positive (1 ~ 100000)",
        generator: () => `0 ${1 + Math.floor(Math.random() * 100000)}`,
        repeat: 10,
    },
    {
        name: "1 Zero, 1 Negative (-1 ~ -100000)",
        generator: function () {
            return `0 -${1 + Math.floor(Math.random() * 100000)}`;
        },
        repeat: 10,
    },
    {
        name: "2 Zero",
        text: "0 0",
    },
];

const generator = new Generator(rules);
console.log(generator.gen());

Rules

Each rule must have one of the following properties: generator or regex or text.

And the following properties are optional: name, repeat.

3 Ways to Generate Testcases

There are 3 ways to generate testcases: Generator Function, Regex and Text.

The order of rule applying is:

1. Generator Function
2. Regex
3. Text

I recommand you to use Generator Function because it is more flexible.

CLI Tool

Install CLI

npm i -g testcase-gen

Use CLI

testcase-gen --recipe [recipe] --output [output] --mode [mode]

    --recipe (-r): Recipe JS File Path.
    --output (-o): Output File Path.
    --mode (-m): Generate Mode. "simple" or "normal".
    --version (-V) or (-v): Show version.