add example apidoc comments, add notFound middleware

test/api/v3/unit/middlewares/notFound.test.js

@@ -0,0 +1,32 @@
+import {
+  generateRes,
+  generateReq,
+  generateNext,
+} from '../../../../helpers/api-unit.helper';
+
+import notFoundHandler from '../../../../../website/src/middlewares/api-v3/notFound';
+
+import { NotFound } from '../../../../../website/src/libs/api-v3/errors';
+
+describe('notFoundHandler', () => {
+  let res, req, next;
+
+  beforeEach(() => {
+    res = generateRes();
+    req = generateReq();
+    next = generateNext();
+
+    sandbox.stub(logger, 'error');
+  });
+
+  it('sends NotFound error if the resource isn\'t found', () => {
+    expect(res.status).to.be.calledOnce;
+    expect(res.json).to.be.calledOnce;
+
+    expect(res.status).to.be.calledWith(404);
+    expect(res.json).to.be.calledWith({
+      error: 'NotFound',
+      message: 'Not found.',
+    });
+  });
+});