text: var testIs = function(url, type, status) {
    it(url + ' return ' + (status || 200) + ' and is ' + type.toString(),
        function(done) {
      supertest(app)
        .get(url)
        .expect(status || 200)
        .expect('Content-Type', type, done);
    });
  };
  
  var prefix = 'test-style';
  
  describe('Styles', function() {
    describe('/styles/' + prefix + '/style.json is valid style', function() {
      testIs('/styles/' + prefix + '/style.json', /application\/json/);
  
      it('contains expected properties', function(done) {
        supertest(app)
          .get('/styles/' + prefix + '/style.json')
          .expect(function(res) {
            res.body.version.should.equal(8);
            res.body.name.should.be.String();
            res.body.sources.should.be.Object();
            res.body.glyphs.should.be.String();
            res.body.sprite.should.be.String();
            res.body.sprite.should.equal('/test/styles/test-style/sprite');
            res.body.layers.should.be.Array();
          }).end(done);
      });
    });
    describe('/styles/streets/style.json is not served', function() {
      testIs('/styles/streets/style.json', /./, 404);
    });
  
    describe('/styles/' + prefix + '/sprite[@2x].{format}', function() {
      testIs('/styles/' + prefix + '/sprite.json', /application\/json/);
      testIs('/styles/' + prefix + '/sprite@2x.json', /application\/json/);
      testIs('/styles/' + prefix + '/sprite.png', /image\/png/);
      testIs('/styles/' + prefix + '/sprite@2x.png', /image\/png/);
    });
  });
  
  describe('Fonts', function() {
    testIs('/fonts/Open Sans Bold/0-255.pbf', /application\/x-protobuf/);
    testIs('/fonts/Open Sans Regular/65280-65535.pbf', /application\/x-protobuf/);
    testIs('/fonts/Open Sans Bold,Open Sans Regular/0-255.pbf',
           /application\/x-protobuf/);
    testIs('/fonts/Nonsense,Open Sans Bold/0-255.pbf', /./, 400);
  
    testIs('/fonts/Nonsense/0-255.pbf', /./, 400);
    testIs('/fonts/Nonsense1,Nonsense2/0-255.pbf', /./, 400);
  });
  