# @push.rocks/tapbundle
A test automation library bundling utilities and tools for TAP (Test Anything Protocol) based testing, specifically tailored for tapbuffer.
## Install
To install the package, execute:
```bash
npm install @push.rocks/tapbundle --save-dev
```
This command will add `@push.rocks/tapbundle` to your project's `devDependencies`, ensuring it is only used during development and testing.
## Usage
The `@push.rocks/tapbundle` is a versatile testing framework compatible with TAP, designed using TypeScript to facilitate robust and scalable testing of applications, whether you are dealing with unit tests, integration tests, or simply need a streamlined way to automate assertions across your application’s lifecycle. The framework is especially useful if you are already using or planning to use tapbuffer.
**Getting Started**
To begin using `tapbundle`, ensure that your TypeScript project is configured for ESM syntax. Here's how you can set it up and start writing your tests:
1. **Basic Setup**
First, import the necessary modules:
```typescript
import { tap, expect, expectAsync } from '@push.rocks/tapbundle';
```
Start with a simple test to ensure everything is set up correctly:
```typescript
import { tap, expect } from '@push.rocks/tapbundle';
tap.test('Initial test succeeds', async () => {
return expect(true).toBeTrue();
});
tap.start();
```
The above code establishes a basic test environment, using the `tap` instance to manage execution flow and `expect` for assertions.
2. **Defining and Organizing Tests**
You can define tests using the `tap.test` method, where you provide a description and an asynchronous function:
```typescript
tap.test('basic arithmetic test', async () => {
expect(1 + 1).toEqual(2);
});
```
**Async Tests Handling**
Use `expectAsync` for promises or async operations:
```typescript
tap.test('async operation test', async () => {
const fetchData = async () => Promise.resolve('data');
await expectAsync(fetchData()).toBeResolved();
});
```
3. **Tools for Advanced Testing**
`tapbundle` equips you with tools for sophisticated test scenarios:
- **Delay and Timing**
Integrated delay methods are handy for simulating timeouts and waiting states:
```typescript
tap.test('test with delay', async (tools) => {
await tools.delayFor(500); // waits for 500ms
expect(true).toBeTrue();
});
```
- **Custom Pre Tasks**
Set up tasks to run before your test suite begins. This can be setup operations like initializing databases:
```typescript
tap.preTask('initialize environment', async () => {
console.log('Setting up preconditions');
});
```
4. **Execution and Control**
- **Running Tests**
Call `tap.start()` to execute your suite. Handle specific conditions using `.skip` or `.only`:
```typescript
tap.skip.test('skip this test', async () => {
// This test will be ignored
});
tap.only.test('run this test exclusively', async () => {
// Only this test will run among defined tests
});
```
- **Handling Errors and Debugging**
Make use of `consolecolor` to make outputs readable:
```typescript
tap.test('test with colored output', async (tools) => {
const message = await tools.coloredString('Test Passed!', 'green');
console.log(message);
});
```
5. **Integration with Node Tools**
For operations involving the shell or environment-specific setups, use Node tools provided:
```typescript
import { tapNodeTools } from './ts_node/index.js';
tap.test('execute shell command', async () => {
const result = await tapNodeTools.runCommand('ls -la');
expect(result.exitCode).toEqual(0);
});
tap.test('create HTTPS certificate', async () => {
const { key, cert } = await tapNodeTools.createHttpsCert('localhost');
expect(key).toInclude('-----BEGIN RSA PRIVATE KEY-----');
expect(cert).toInclude('-----BEGIN CERTIFICATE-----');
});
```
6. **Working with Environment Variables**
Leverage the power of dynamic environment management using `qenv`:
```typescript
tap.test('use environment variable', async (tools) => {
const dbUrl = await tools.getEnvVarOnDemand('DB_URL');
expect(dbUrl).toBeDefined();
});
```
7. **Managing Asynchronous Behavior**
The framework allows for precise control over asynchronous processes, introducing race conditions or coordinated delays:
```typescript
tap.test('controlled async scenario', async (tools) => {
const asyncOp = async () => Promise.resolve('complete');
tools.timeout(1000); // if operation exceeds 1000ms, test fails
const result = await asyncOp();
expect(result).toBe('complete');
});
```
8. **Web Testing Utilities**
If your testing involves browser environments, make use of the `webhelpers` utilities, for instance with libraries like Open WC:
```typescript
import { webhelpers } from './webhelpers.js';
tap.test('web component test', async () => {
const element = await webhelpers.fixture(webhelpers.html`