add meta/models controller to get public models paths

test/api/v3/integration/meta/models/GET-model_paths.test.js

@@ -0,0 +1,30 @@
+import {
+  generateUser,
+  translate as t,
+} from '../../../../../helpers/api-integration/v3';
+
+describe('GET /meta/models/:model/paths', () => {
+  let user;
+
+  before(async () => {
+    user = await generateUser();
+  });
+
+  it('returns an error when model is not accessible or doesn\'t exists', async () => {
+    await expect(user.get('/meta/models/1234/paths')).to.eventually.be.rejected.and.eql({
+      code: 400,
+      error: 'BadRequest',
+      message: t('invalidReqParams'),
+    });
+  });
+
+  let models = ['habit', 'daily', 'todo', 'reward', 'user', 'tag', 'challenge', 'group'];
+  models.forEach(model => {
+    it(`returns the model paths for ${model}`, async () => {
+      let res = await user.get(`/meta/models/${model}/paths`);
+
+      expect(res._id).to.equal('String');
+      expect(res).to.not.have.keys('__v');
+    });
+  });
+});