test: check Mongoose Discriminators proper behavior

related #78

Author: nodkz

src/__tests__/github-issues-test.js

@@ -0,0 +1,22 @@
+/* @flow */
+
+import mongoose from 'mongoose';
+import { composeWithMongoose } from '../index';
+
+describe('github issues checks', () => {
+  it('#78 Mongoose and Discriminators', () => {
+    const options = { discriminatorKey: 'kind' };
+
+    const eventSchema = new mongoose.Schema({ time: Date }, options);
+    const Event = mongoose.model('GenericEvent', eventSchema);
+
+    const clickedLinkSchema = new mongoose.Schema({ url: String }, options);
+    const ClickedLinkEvent = Event.discriminator('ClickedLinkEvent', clickedLinkSchema);
+
+    const EventTC = composeWithMongoose(Event);
+    const ClickedLinkEventTC = composeWithMongoose(ClickedLinkEvent);
+
+    expect(EventTC.getFieldNames()).toEqual(['time', '_id', 'kind']);
+    expect(ClickedLinkEventTC.getFieldNames()).toEqual(['url', '_id', 'time', 'kind']);
+  });
+});