import { foaf, rdf } from 'rdf-namespaces';
import { DataFactory } from './n3dataset';
import { triplesToTurtle, turtleToTriples } from './turtle';

describe('turtleToTriples', () => {
  it('should correctly find all triples in raw Turtle', async () => {
    const parsed = await turtleToTriples(`
      @prefix : <#>.
      @prefix foaf: <http://xmlns.com/foaf/0.1/>.

      :someSubject a foaf:Person; foaf:name "Some name".
    `, 'https://example.com/some-path');

    const expectedTriple1 = DataFactory.triple(
      DataFactory.namedNode('https://example.com/some-path#someSubject'),
      DataFactory.namedNode(rdf.type),
      DataFactory.namedNode(foaf.Person),
    );
    const expectedTriple2 = DataFactory.triple(
      DataFactory.namedNode('https://example.com/some-path#someSubject'),
      DataFactory.namedNode(foaf.name),
      DataFactory.literal('Some name'),
    );
    expect(parsed).toEqual([expectedTriple1, expectedTriple2]);
  });

  it('should reject if the Turtle is invalid', async () => {
    const turtle = `
      @prefix : <#>.
      @prefix foaf: <http://xmlns.com/foaf/0.1/>.

      :arbitrarySubject a foaf:Person; foaf:name “A literal with invalid quotes”.
    `;

    await expect(turtleToTriples(turtle, 'https://example.com/some-path')).rejects.toThrow();
  });
});

describe('triplesToTurtle', () => {
  it('should convert triples to a turtle string', async () => {
    const triples = [
      DataFactory.triple(
        DataFactory.namedNode('https://vincentt.inrupt.net/profile/card#me'),
        DataFactory.namedNode(foaf.name),
        DataFactory.literal('Vincent'),
      ),
    ];

    const turtle = await triplesToTurtle(triples);

    expect(turtle.trim()).toBe('<https://vincentt.inrupt.net/profile/card#me> <http://xmlns.com/foaf/0.1/name> "Vincent".');
  });

  it('should ignore the Graph part of the Quad', async () => {
    const triples = [
      DataFactory.quad(
        DataFactory.namedNode('https://vincentt.inrupt.net/profile/card#me'),
        DataFactory.namedNode(foaf.name),
        DataFactory.literal('Vincent'),
        DataFactory.namedNode('https://vincentt.inrupt.net/profile/card'),
      ),
    ];

    const turtle = await triplesToTurtle(triples);

    expect(turtle.trim()).toBe('<https://vincentt.inrupt.net/profile/card#me> <http://xmlns.com/foaf/0.1/name> "Vincent".');
  });
});