check for membership when leaving public guild, fix memberCount update when leaving group, add missing files

test/api/v3/integration/user/auth/POST-firebase.test.js

@@ -0,0 +1,18 @@
+import {
+  generateUser,
+} from '../../../../../helpers/api-integration/v3';
+import moment from 'moment';
+
+describe('POST /user/auth/firebase', () => {
+  let user;
+
+  before(async () => {
+    user = await generateUser();
+  });
+
+  it('returns a Firebase token', async () => {
+    let {token, expires} = await user.post('/user/auth/firebase');
+    expect(moment(expires).isValid()).to.be.true;
+    expect(token).to.be.a('string');
+  });
+});