var testTileJSONArray = function(url) {
  describe(url + ' is array of TileJSONs', function() {
    it('is json', function(done) {
      supertest(app)
        .get(url)
        .expect(200)
        .expect('Content-Type', /application\/json/, done);
    });

    it('is non-empty array', function(done) {
      supertest(app)
        .get(url)
        .expect(function(res) {
          res.body.should.be.Array();
          res.body.length.should.be.greaterThan(0);
        }).end(done);
    });
  });
};

var testTileJSON = function(url, basename) {
  describe(url + ' is TileJSON', function() {
    it('is json', function(done) {
      supertest(app)
        .get(url)
        .expect(200)
        .expect('Content-Type', /application\/json/, done);
    });

    it('has valid basename and tiles', function(done) {
      supertest(app)
        .get(url)
        .expect(function(res) {
          res.body.basename.should.equal(basename);
          res.body.tiles.length.should.be.greaterThan(0);
        }).end(done);
    });
  });
};

describe('Metadata', function() {
  testTileJSONArray('/index.json');
  testTileJSONArray('/rendered.json');
  testTileJSONArray('/data.json');

  describe('/styles.json is valid array', function() {
    it('is json', function(done) {
      supertest(app)
        .get('/styles.json')
        .expect(200)
        .expect('Content-Type', /application\/json/, done);
    });

    it('contains valid item', function(done) {
      supertest(app)
        .get('/styles.json')
        .expect(function(res) {
          res.body.should.be.Array();
          res.body.length.should.be.greaterThan(0);
          res.body[0].version.should.equal(8);
          res.body[0].id.should.be.String();
          res.body[0].name.should.be.String();
        }).end(done);
    });
  });

  testTileJSON('/styles/bright/rendered.json', 'bright');
  testTileJSON('/data/zurich-vector.json', 'zurich-vector');
});