fix(repository): findPath now returns null when the server doesn't re…

…turn data

src/repository.js

@@ -105,8 +105,14 @@ export class Repository {
    }

    return findQuery
      .then(x => this.populateEntities(x))
      .then(response => {
        return this.populateEntities(response);
      })
      .then(populated => {
        if (!populated) {
          return null;
        }

        if (!Array.isArray(populated)) {
          return populated.markClean();
        }

test/repository.spec.js

@@ -162,6 +162,16 @@ describe('Repository', function() {
        done();
      });
    });

    it('Should not fail if no data was returned', function(done) {
      let repository = constructRepository('find-test');
      repository.getTransport().find = () => Promise.resolve(null);

      repository.find()
        .then(data => expect(data).toBe(null))
        .catch(err => expect(true).toBe(false))
        .then(done);
    });
  });

  describe('.count()', function() {