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tap

A Test-Anything-Protocol library for JavaScript

21.1.0
latest
Source
npm
Version published
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647K
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Maintainers
1
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What is tap?

The 'tap' npm package is a Test Anything Protocol (TAP) producer for Node.js. It is used for writing tests in JavaScript and provides a simple way to create and run tests, generate reports, and handle assertions.

What are tap's main functionalities?

Basic Test Creation

This feature allows you to create basic tests using the 'tap' module. The example demonstrates a simple test that checks if 1 + 1 equals 2.

const tap = require('tap');
tap.test('basic test', t => {
  t.equal(1 + 1, 2, '1 + 1 should equal 2');
  t.end();
});

Asynchronous Testing

This feature allows you to write asynchronous tests. The example shows how to use async/await to handle asynchronous operations within a test.

const tap = require('tap');
tap.test('async test', async t => {
  const result = await new Promise(resolve => setTimeout(() => resolve(42), 100));
  t.equal(result, 42, 'result should be 42');
  t.end();
});

Nested Tests

This feature allows you to create nested tests. The example demonstrates a parent test containing a child test, which helps in organizing tests hierarchically.

const tap = require('tap');
tap.test('parent test', t => {
  t.test('child test', t => {
    t.equal(2 * 2, 4, '2 * 2 should equal 4');
    t.end();
  });
  t.end();
});

Assertions

This feature provides various assertion methods to validate test conditions. The example shows different types of assertions like ok, notOk, equal, and notEqual.

const tap = require('tap');
tap.test('assertions test', t => {
  t.ok(true, 'this should be true');
  t.notOk(false, 'this should be false');
  t.equal(3, 3, '3 should equal 3');
  t.notEqual(3, 4, '3 should not equal 4');
  t.end();
});

Other packages similar to tap

Keywords

assert

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Package last updated on 19 Feb 2025

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