test/alias_test.js

'use strict';

import {expect} from 'chai';
import {describe, it} from 'mocha';
import {getAlias, setAlias} from '../src/index';

/**
 * @test {getAlias}
 */
describe('getAlias()', () => {
  it('should return an empty string if the alias is not resolvable', () => {
    expect(getAlias('@fooBarBaz123456', false)).to.be.empty;
  });

  it('should eventually throw an error if the alias is not resolvable', () => {
    expect(() => getAlias('@fooBarBaz123456', true)).to.throw(TypeError);
  });

  it('should return the path or URL of the specified alias', () => {
    setAlias('@test', '/home/cedx');
    expect(getAlias('@test')).to.equal('/home/cedx');
    expect(getAlias('@test/foo/bar.js')).to.equal('/home/cedx/foo/bar.js');

    setAlias('@foobar', '@test/foobar');
    expect(getAlias('@foobar/baz.js')).to.equal('/home/cedx/foobar/baz.js');
  });

  it('should return the specified value if it is not a path alias', () => {
    expect(getAlias('')).to.be.empty;
    expect(getAlias('fooBar')).to.equal('fooBar');
  });
});

/**
 * @test {setAlias}
 */
describe('setAlias()', () => {
  it('should throw an error if the specified name is empty', () => {
    expect(() => setAlias('', '/home/cedx')).to.throw(TypeError);
  });

  it('should normalize the directory separator', () => {
    setAlias('@foo', '\\home\\cedx\\');
    expect(getAlias('@foo')).to.equal('/home/cedx');
  });

  it('should add the required `@` character to the specified name', () => {
    setAlias('bar', '/home/cedx');
    expect(getAlias('@bar')).to.equal('/home/cedx');
  });

  it('should remove an alias if the specified value is empty', () => {
    setAlias('@baz', '/home/cedx');
    expect(getAlias('@baz')).to.equal('/home/cedx');

    setAlias('@baz', '');
    expect(() => getAlias('@baz')).to.throw;
  });
});