Allow a user to change their own username

test/server/graph/mutations/changeUsername.js

@@ -89,7 +89,7 @@ describe('graph.mutations.changeUsername', () => {
       expect(res.data.changeUsername.errors).to.have.length(1);
       expect(res.data.changeUsername.errors[0]).to.have.property(
         'translation_key',
-        'NOT_AUTHORIZED'
+        'EDIT_USERNAME_NOT_AUTHORIZED'
       );
 
       // Set the user to the desired status.

test/server/services/users.js

@@ -2,6 +2,8 @@ const UsersService = require('../../../services/users');
 const SettingsService = require('../../../services/settings');
 const mailer = require('../../../services/mailer');
 const Context = require('../../../graph/context');
+const timekeeper = require('timekeeper');
+const moment = require('moment');
 
 const chai = require('chai');
 chai.use(require('chai-as-promised'));
@@ -303,6 +305,62 @@ describe('services.UsersService', () => {
         }
       });
     });
+
+    if (func === 'setUsername') {
+      it('should let a user set their username from UNSET', async () => {
+        const user = mockUsers[0];
+
+        // Set the user to the desired status.
+        await UsersService.setUsernameStatus(user.id, 'UNSET');
+        await UsersService.setUsername(user.id, 'new_username', null);
+      });
+
+      describe('time based', () => {
+        afterEach(() => {
+          timekeeper.reset();
+        });
+
+        ['SET', 'APPROVED'].forEach(status => {
+          it(`should not allow users to change their username if it was changed within 14 of today from ${status}`, async () => {
+            const user = mockUsers[0];
+
+            // Set the user to the desired status.
+            await UsersService.setUsernameStatus(user.id, status);
+
+            timekeeper.travel(
+              moment()
+                .add(5, 'days')
+                .toDate()
+            );
+
+            try {
+              await UsersService.setUsername(user.id, 'new_username', null);
+              throw new Error('edit was processed successfully');
+            } catch (err) {
+              expect(err).have.property(
+                'translation_key',
+                'EDIT_USERNAME_NOT_AUTHORIZED'
+              );
+            }
+          });
+
+          it(`allows users to change their username if it was changed 14 days before today from ${status}`, async () => {
+            const user = mockUsers[0];
+
+            // Set the user to the desired status.
+            await UsersService.setUsernameStatus(user.id, status);
+
+            timekeeper.travel(
+              moment()
+                .add(15, 'days')
+                .toDate()
+            );
+
+            await UsersService.setUsername(user.id, 'new_username', null);
+          });
+        });
+      });
+    }
   });
 
   describe('#isValidUsername', () => {