Loading test fixtures is as easy as ABC

Loading test fixtures is as easy as ABC with Fixura.

Usage

ES modules

import fixturesFactory from '@natlibfi/fixura';
const {getFixture} = fixturesFactory(__dirname, '...', 'test-fixtures']);
const fixture = getFixture('foo.txt');

// Get multiple files using regular expressions
const fixtures = getFixtures(/.+\.txt/u);

Node.js require

const {default: fixturesFactory} from '@natlibfi/fixura';
const {getFixture} = fixturesFactory(__dirname, '...', 'test-fixtures');
const fixture = getFixture('foo.txt');

// Get multiple files using regular expressions
const fixtures = getFixtures(/.+\.txt/u);

Configuration

Readers

The readers are exported as READERS:

import fixturesFactory, {READERS} from '@natlibfi/fixura'

Default reader can be passed in to the factory function:

const {getFixture} = fixturesFactory({
    rootPath: [__dirname, '..', 'test-fixtures'],
    reader: READERS.JSON
});

or fixture specific reader can be defined:

getFixture({components: ['foo', 'bar.txt'], reader: READERS.JSON})

Built-in readers

• TEXT: Returns the fixture as test (Default)
• JSON: Parses the fixture as JSON and returns an object
• STREAM: Returns a read stream to the fixture

Custom reader

Custom readers can be used:

const {getFixture} = fixturesFactory({
    rootPath: [__dirname, '..', 'test-fixtures'],
    reader: filePath => doSomething()
});

or

getFixture({components: ['foo', 'bar.txt'], reader: filePath => doSomething()});

The reader function takes one string argument which is an absolute path to the fixture file. The function can return any value which the test case can then use as appropriate.

failWhenNotFound

Set failWhenNotFound to false to return undefined and to prevent throwing if a fixture file is not found:

const {getFixture} = fixturesFactory({
    rootPath: [__dirname, '..', 'test-fixtures'],
    failWhenNotFound: false
});

const foo = getFixture('foo', 'bar.txt'); // undefined

License and copyright

Copyright (c) 2019-2020, 2022-2024 University Of Helsinki (The National Library Of Finland)

This project's source code is licensed under the terms of MIT or any later version.