replace typed errors with custom errors

test/src/helpers/errors.js

@@ -0,0 +1,51 @@
+import expect from 'expect.js';
+import { WorkerTimeoutError, UnspecifiedWorkerError } from '../../../lib/helpers/errors';
+
+describe('custom errors', function () {
+  describe('WorkerTimeoutError', function () {
+    it('should be function', () => {
+      expect(WorkerTimeoutError).to.be.a('function');
+    });
+
+    it('should have a name', function () {
+      const err = new WorkerTimeoutError('timeout error');
+      expect(err).to.have.property('name', 'WorkerTimeoutError');
+    });
+
+    it('should take a jobId property', function () {
+      const err = new WorkerTimeoutError('timeout error', { jobId: 'il7hl34rqlo8ro' });
+      expect(err).to.have.property('jobId', 'il7hl34rqlo8ro');
+    });
+
+    it('should take a timeout property', function () {
+      const err = new WorkerTimeoutError('timeout error', { timeout: 15000 });
+      expect(err).to.have.property('timeout', 15000);
+    });
+
+    it('should be stringifyable', function () {
+      const err = new WorkerTimeoutError('timeout error');
+      expect(`${err}`).to.equal('WorkerTimeoutError: timeout error');
+    });
+  });
+
+  describe('UnspecifiedWorkerError', function () {
+    it('should be function', () => {
+      expect(UnspecifiedWorkerError).to.be.a('function');
+    });
+
+    it('should have a name', function () {
+      const err = new UnspecifiedWorkerError('unspecified error');
+      expect(err).to.have.property('name', 'UnspecifiedWorkerError');
+    });
+
+    it('should take a jobId property', function () {
+      const err = new UnspecifiedWorkerError('unspecified error', { jobId: 'il7hl34rqlo8ro' });
+      expect(err).to.have.property('jobId', 'il7hl34rqlo8ro');
+    });
+
+    it('should be stringifyable', function () {
+      const err = new UnspecifiedWorkerError('unspecified error');
+      expect(`${err}`).to.equal('UnspecifiedWorkerError: unspecified error');
+    });
+  });
+});