A miniature Tester helper for nodejs

micro-tester is a very simple, zero dependencies helper for unit tests.

Homepage: https://github.com/popovmp/micro-tester

Synopsis

const { strictEqual } = require('assert');
const {init, test, done, ensure} = require('@popovmp/micro-tester');

init('My tests');

test('6 * 7 = 42', () => {
    const actual   = 6 * 7;
    const expected = 42;
    strictEqual(actual, expected);
});

done();

Installation

npm install @popovmp/micro-tester

Usage

micro-tester runs a testFunction, collects stats, and prints a summary.

Start the test file with init('Test set description');. The intit function resets the testing statistics. It also prints the provided message on the console.

Perform test: test('Test description', () => {...}). micro-tester a tests passes when the function completes. The test fails when the function throws.

Call ensure(); at the end of the test file. It shows a test summary and throws an error if there are failed tests.

If you don't want to throw errors, call done() at the end of the test set.

const { strictEqual } = require('assert');
const {init, test, done, ensure} = require('@popovmp/micro-tester');

init('My tests');

test('6 * 7 = 42', () => {
    const actual   = 6 * 7;
    const expected = 42;
    strictEqual(actual, expected);
});

ensure(); 

Output - passed test:

Output - failed test:

You may have several testing groups:

init('Testing foo');

test();
test();

done();

init('Testing bar');

test();
test();

ensure(); // Call `ensure` if you want to throw on a failed test

Run all tests

micro-tester exports a micro-tester command. It finds and runs all tests in ./test folder.

The accepted test files format is test-name.test.js.

You can set this command in your package.js:

{
  "scripts": {
    "test": "micro-tester"
  }
}

Methods

micro-tester exports three methods:

/**
 * Resets the stats and shows the message
 * @param {string} message
 */
function init(message) { }

/**
 * Performs a test
 *
 * @param { string   } message
 * @param { function } assertion
 */
function test(message, assertion) { }

/**
 * Called at the end of testing.
 * It resets the stats.
 */
function done() { }

/**
 * Called at the end of testing.
 * It resets the stats.
 * It throws error on failed tests.
 */
function ensure() { }

License

micro-tester is free for use and modification. No responsibilities for damages of any kind.

Copyright (c) 2020 Miroslav Popov