diff --git a/server/src/setupTests.ts b/server/src/setupTests.ts
index 4329df19f5e1ca9bd8ac65d619101be17fca056a..b0858c75453fee8d4459813dc9887e087086b1e2 100644
--- a/server/src/setupTests.ts
+++ b/server/src/setupTests.ts
@@ -7,14 +7,14 @@ async function loadTestData() {
     await database('users')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
                 user_name: 'user0',
                 passwd_hash: '$2b$10$sjHhJNz4sLNclKEwWISZRe4cVju6jn4QjMVs4wdZ6wug2SKG774pq',
                 email: 'test0@example.com',
                 real_name: 'Testing Tester',
                 image: null,
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000001',
                 user_name: 'user1',
                 passwd_hash: '$2b$10$sjHhJNz4sLNclKEwWISZRe4cVju6jn4QjMVs4wdZ6wug2SKG774pq',
                 email: 'test1@example.com',
@@ -25,74 +25,74 @@ async function loadTestData() {
     await database('teams')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
                 name: 'Team0',
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000001',
                 name: 'Team1',
             }, {
-                id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000002',
                 name: 'Team2',
             }
         ]);
     await database('roles')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
-                team_id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
+                team_id: '00000000-0000-4000-8000-000000000000',
                 name: 'Role0',
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
-                team_id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000001',
+                team_id: '00000000-0000-4000-8000-000000000001',
                 name: 'Role1',
             }, {
-                id: '00000000-0000-0000-0000-000000000002',
-                team_id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000002',
+                team_id: '00000000-0000-4000-8000-000000000002',
                 name: 'Role2',
             }, {
-                id: '00000000-0000-0000-0000-000000000003',
-                team_id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000003',
+                team_id: '00000000-0000-4000-8000-000000000002',
                 name: 'Role3',
             }
         ]);
     await database('team_members')
         .insert([
             {
-                user_id: '00000000-0000-0000-0000-000000000000',
-                team_id:  '00000000-0000-0000-0000-000000000000',
-                role_id:  '00000000-0000-0000-0000-000000000000',
+                user_id: '00000000-0000-4000-8000-000000000000',
+                team_id:  '00000000-0000-4000-8000-000000000000',
+                role_id:  '00000000-0000-4000-8000-000000000000',
             }, {
-                user_id: '00000000-0000-0000-0000-000000000001',
-                team_id:  '00000000-0000-0000-0000-000000000001',
-                role_id:  '00000000-0000-0000-0000-000000000001',
+                user_id: '00000000-0000-4000-8000-000000000001',
+                team_id:  '00000000-0000-4000-8000-000000000001',
+                role_id:  '00000000-0000-4000-8000-000000000001',
             }, {
-                user_id: '00000000-0000-0000-0000-000000000000',
-                team_id:  '00000000-0000-0000-0000-000000000002',
-                role_id:  '00000000-0000-0000-0000-000000000002',
+                user_id: '00000000-0000-4000-8000-000000000000',
+                team_id:  '00000000-0000-4000-8000-000000000002',
+                role_id:  '00000000-0000-4000-8000-000000000002',
             }, {
-                user_id: '00000000-0000-0000-0000-000000000001',
-                team_id:  '00000000-0000-0000-0000-000000000002',
-                role_id:  '00000000-0000-0000-0000-000000000003',
+                user_id: '00000000-0000-4000-8000-000000000001',
+                team_id:  '00000000-0000-4000-8000-000000000002',
+                role_id:  '00000000-0000-4000-8000-000000000003',
             }
         ]);
     await database('projects')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
                 name: 'Project0',
                 text: 'Project0 Text',
                 color: '#00f',
                 status: 'open',
                 deadline: new Date('2020-10-10'),
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000001',
                 name: 'Project1',
                 text: 'Project1 Text',
                 color: '#0f0',
                 status: 'closed',
                 deadline: null,
             }, {
-                id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000002',
                 name: 'Project2',
                 text: 'Project2 Text',
                 color: '#f00',
@@ -103,24 +103,24 @@ async function loadTestData() {
     await database('team_projects')
         .insert([
             {
-                project_id: '00000000-0000-0000-0000-000000000000',
-                team_id: '00000000-0000-0000-0000-000000000000',
+                project_id: '00000000-0000-4000-8000-000000000000',
+                team_id: '00000000-0000-4000-8000-000000000000',
             }, {
-                project_id: '00000000-0000-0000-0000-000000000001',
-                team_id: '00000000-0000-0000-0000-000000000002',
+                project_id: '00000000-0000-4000-8000-000000000001',
+                team_id: '00000000-0000-4000-8000-000000000002',
             }, {
-                project_id: '00000000-0000-0000-0000-000000000002',
-                team_id: '00000000-0000-0000-0000-000000000000',
+                project_id: '00000000-0000-4000-8000-000000000002',
+                team_id: '00000000-0000-4000-8000-000000000000',
             }, {
-                project_id: '00000000-0000-0000-0000-000000000002',
-                team_id: '00000000-0000-0000-0000-000000000001',
+                project_id: '00000000-0000-4000-8000-000000000002',
+                team_id: '00000000-0000-4000-8000-000000000001',
             }
         ]);
     await database('tasks')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
-                project_id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
+                project_id: '00000000-0000-4000-8000-000000000000',
                 name: 'Task0',
                 text: 'Task0 Text',
                 icon: '0',
@@ -129,8 +129,8 @@ async function loadTestData() {
                 created: new Date('2020-10-05'),
                 edited: new Date('2020-10-10'),
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
-                project_id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000001',
+                project_id: '00000000-0000-4000-8000-000000000001',
                 name: 'Task1',
                 text: 'Task1 Text',
                 icon: '1',
@@ -139,8 +139,8 @@ async function loadTestData() {
                 created: new Date('2020-10-10'),
                 edited: new Date('2020-10-15'),
             }, {
-                id: '00000000-0000-0000-0000-000000000002',
-                project_id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000002',
+                project_id: '00000000-0000-4000-8000-000000000002',
                 name: 'Task2',
                 text: 'Task2 Text',
                 icon: '2',
@@ -149,8 +149,8 @@ async function loadTestData() {
                 created: new Date('2020-10-15'),
                 edited: new Date('2020-10-20'),
             }, {
-                id: '00000000-0000-0000-0000-000000000003',
-                project_id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000003',
+                project_id: '00000000-0000-4000-8000-000000000002',
                 name: 'Task3',
                 text: 'Task3 Text',
                 icon: '3',
@@ -159,8 +159,8 @@ async function loadTestData() {
                 created: new Date('2020-10-15'),
                 edited: new Date('2020-10-20'),
             }, {
-                id: '00000000-0000-0000-0000-000000000004',
-                project_id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000004',
+                project_id: '00000000-0000-4000-8000-000000000002',
                 name: 'Task4',
                 text: 'Task4 Text',
                 icon: '4',
@@ -169,8 +169,8 @@ async function loadTestData() {
                 created: new Date('2020-10-15'),
                 edited: new Date('2020-10-20'),
             }, {
-                id: '00000000-0000-0000-0000-000000000005',
-                project_id: '00000000-0000-0000-0000-000000000002',
+                id: '00000000-0000-4000-8000-000000000005',
+                project_id: '00000000-0000-4000-8000-000000000002',
                 name: 'Task5',
                 text: 'Task5 Text',
                 icon: '5',
@@ -183,35 +183,35 @@ async function loadTestData() {
     await database('task_requirements')
         .insert([
             {
-                task_id: '00000000-0000-0000-0000-000000000000',
-                role_id: '00000000-0000-0000-0000-000000000000',
+                task_id: '00000000-0000-4000-8000-000000000000',
+                role_id: '00000000-0000-4000-8000-000000000000',
                 time: 30,
             }, {
-                task_id: '00000000-0000-0000-0000-000000000001',
-                role_id: '00000000-0000-0000-0000-000000000001',
+                task_id: '00000000-0000-4000-8000-000000000001',
+                role_id: '00000000-0000-4000-8000-000000000001',
                 time: 30,
             }, {
-                task_id: '00000000-0000-0000-0000-000000000005',
-                role_id: '00000000-0000-0000-0000-000000000000',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                role_id: '00000000-0000-4000-8000-000000000000',
                 time: 60,
             }, {
-                task_id: '00000000-0000-0000-0000-000000000005',
-                role_id: '00000000-0000-0000-0000-000000000001',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                role_id: '00000000-0000-4000-8000-000000000001',
                 time: 30,
             }
         ]);
     await database('task_dependencies')
         .insert([
             {
-                task_id: '00000000-0000-0000-0000-000000000002',
-                requires_id: '00000000-0000-0000-0000-000000000005',
+                task_id: '00000000-0000-4000-8000-000000000002',
+                requires_id: '00000000-0000-4000-8000-000000000005',
             }
         ]);
     await database('task_assignees')
         .insert([
             {
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000000',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000000',
                 time: 120,
                 finished: false,
             }
@@ -219,21 +219,21 @@ async function loadTestData() {
     await database('workhours')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000000',
                 started: new Date('2020-10-10T00:00:00'),
                 finished: new Date('2020-10-10T01:00:00'),
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000001',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000000',
                 started: new Date('2020-10-10T03:00:00'),
                 finished: new Date('2020-10-10T04:00:00'),
             }, {
-                id: '00000000-0000-0000-0000-000000000002',
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000002',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000000',
                 started: new Date('2020-10-10T05:00:00'),
                 finished: null,
             }
@@ -241,23 +241,23 @@ async function loadTestData() {
     await database('comments')
         .insert([
             {
-                id: '00000000-0000-0000-0000-000000000000',
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000000',
+                id: '00000000-0000-4000-8000-000000000000',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000000',
                 text: 'Comment0',
                 created: new Date('2020-10-10T00:00:00'),
                 edited: new Date('2020-10-10T01:00:00'),
             }, {
-                id: '00000000-0000-0000-0000-000000000001',
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000001',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000001',
                 text: 'Comment1',
                 created: new Date('2020-10-10T03:00:00'),
                 edited: new Date('2020-10-10T04:00:00'),
             }, {
-                id: '00000000-0000-0000-0000-000000000002',
-                task_id: '00000000-0000-0000-0000-000000000005',
-                user_id: '00000000-0000-0000-0000-000000000001',
+                id: '00000000-0000-4000-8000-000000000002',
+                task_id: '00000000-0000-4000-8000-000000000005',
+                user_id: '00000000-0000-4000-8000-000000000001',
                 text: 'Comment2',
                 created: new Date('2020-10-10T05:00:00'),
                 edited: new Date('2020-10-10T05:00:00'),
@@ -270,80 +270,80 @@ async function deleteTestData() {
         await database('comments')
             .delete()
             .whereIn('comments.task_id', [
-                '00000000-0000-0000-0000-000000000005',
+                '00000000-0000-4000-8000-000000000005',
             ]);
         await database('workhours')
             .delete()
             .whereIn('workhours.task_id', [
-                '00000000-0000-0000-0000-000000000005',
+                '00000000-0000-4000-8000-000000000005',
             ]);
         await database('task_assignees')
             .delete()
             .whereIn('task_assignees.task_id', [
-                '00000000-0000-0000-0000-000000000005',
+                '00000000-0000-4000-8000-000000000005',
             ]);
         await database('task_dependencies')
             .delete()
             .whereIn('task_dependencies.task_id', [
-                '00000000-0000-0000-0000-000000000005',
+                '00000000-0000-4000-8000-000000000005',
             ]);
         await database('task_requirements')
             .delete()
             .whereIn('task_requirements.task_id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
-                '00000000-0000-0000-0000-000000000005',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
+                '00000000-0000-4000-8000-000000000005',
             ]);
         await database('tasks')
             .delete()
             .whereIn('tasks.id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
-                '00000000-0000-0000-0000-000000000002',
-                '00000000-0000-0000-0000-000000000003',
-                '00000000-0000-0000-0000-000000000004',
-                '00000000-0000-0000-0000-000000000005',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
+                '00000000-0000-4000-8000-000000000002',
+                '00000000-0000-4000-8000-000000000003',
+                '00000000-0000-4000-8000-000000000004',
+                '00000000-0000-4000-8000-000000000005',
             ]);
         await database('team_projects')
             .delete()
             .whereIn('team_projects.team_id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
-                '00000000-0000-0000-0000-000000000002',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
+                '00000000-0000-4000-8000-000000000002',
             ]);
         await database('projects')
             .delete()
             .whereIn('projects.id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
-                '00000000-0000-0000-0000-000000000002',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
+                '00000000-0000-4000-8000-000000000002',
             ]);
         await database('team_members')
             .delete()
             .whereIn('team_members.user_id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
             ]);
         await database('roles')
             .delete()
             .whereIn('roles.id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
-                '00000000-0000-0000-0000-000000000002',
-                '00000000-0000-0000-0000-000000000003',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
+                '00000000-0000-4000-8000-000000000002',
+                '00000000-0000-4000-8000-000000000003',
             ]);
         await database('teams')
             .delete()
             .whereIn('teams.id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
-                '00000000-0000-0000-0000-000000000002',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
+                '00000000-0000-4000-8000-000000000002',
             ]);
         await database('users')
             .delete()
             .whereIn('users.id', [
-                '00000000-0000-0000-0000-000000000000',
-                '00000000-0000-0000-0000-000000000001',
+                '00000000-0000-4000-8000-000000000000',
+                '00000000-0000-4000-8000-000000000001',
             ]);
     } else {
         // The test database is in memory only and does not have to be cleaned
diff --git a/server/src/v1/auth.test.ts b/server/src/v1/auth.test.ts
index fb67e4eb94278c9b61c8d31d305d4c568cc52422..ff3a33d7addb9eadfd6a7e1814724f1285e5746e 100644
--- a/server/src/v1/auth.test.ts
+++ b/server/src/v1/auth.test.ts
@@ -109,7 +109,7 @@ describe('password can be changed', () => {
     beforeAll(async () => {
         response = await request
             .put('/v1/auth/password')
-            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-0000-0000-000000000000')}`)
+            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-4000-8000-000000000000')}`)
             .send({
                 password: 'testtest2',
             });
@@ -146,7 +146,7 @@ describe('password can be changed', () => {
     afterAll(async () => {
         response = await request
             .put('/v1/auth/password')
-            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-0000-0000-000000000000')}`)
+            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-4000-8000-000000000000')}`)
             .send({
                 password: 'testtest',
             });
@@ -156,7 +156,7 @@ describe('password can be changed', () => {
 test('changing username to an existing one fails', async () => {
     const response = await request
         .put('/v1/auth/username')
-        .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-0000-0000-000000000000')}`)
+        .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-4000-8000-000000000000')}`)
         .send({
             username: 'User1',
         });
@@ -170,7 +170,7 @@ describe('username can be changed', () => {
     beforeAll(async () => {
         response = await request
             .put('/v1/auth/username')
-            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-0000-0000-000000000000')}`)
+            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-4000-8000-000000000000')}`)
             .send({
                 username: 'User00',
             });
@@ -207,7 +207,7 @@ describe('username can be changed', () => {
     afterAll(async () => {
         response = await request
             .put('/v1/auth/username')
-            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-0000-0000-000000000000')}`)
+            .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-4000-8000-000000000000')}`)
             .send({
                 username: 'User0',
             });
@@ -217,7 +217,7 @@ describe('username can be changed', () => {
 test('valid tokens can be extended', async () => {
     const response = await request
         .get('/v1/auth/extend')
-        .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-0000-0000-000000000000')}`);
+        .set('Authorization', `Bearer ${await generateAuthToken('00000000-0000-4000-8000-000000000000')}`);
     expect(response.status).toEqual(200);
     expect(response.body.status).toEqual('success');
 });
diff --git a/server/src/v1/user.test.ts b/server/src/v1/user.test.ts
index 5587d6e2447da60c9729d8f47016ed6a18e8dcfc..8eaf9256cd5fde5d9d990ccca0b51cc5c0015f4d 100644
--- a/server/src/v1/user.test.ts
+++ b/server/src/v1/user.test.ts
@@ -5,9 +5,40 @@ import { api } from '../api';
 
 const request = supertest(api);
 
-test('non existant username returns 404 for /v1/user/name/', async () => {
-    const response = await request.get('/v1/user/name/User3');
-    expect(response.status).toEqual(404);
-    expect(response.body.status).toEqual('error');
-});
+describe('/user/name', () => {
+    test('non existant username returns', async () => {
+        const response = await request.get('/v1/user/name/User3');
+        expect(response.status).toEqual(404);
+        expect(response.body.status).toEqual('error');
+    });
+
+    test('existing username returns id', async () => {
+        const response = await request.get('/v1/user/name/User0');
+        expect(response.status).toEqual(200);
+        expect(response.body.status).toEqual('success');
+        expect(response.body.user.id).toEqual('00000000-0000-4000-8000-000000000000');
+    });
+
+    test('existing username returns name', async () => {
+        const response = await request.get('/v1/user/name/User0');
+        expect(response.status).toEqual(200);
+        expect(response.body.status).toEqual('success');
+        expect(response.body.user.username).toEqual('user0');
+    });
+})
+
+describe('/:uuid/image', () => {
+    test('returns 404 without body if no image is set', async () => {
+        const response = await request.get('/v1/user/00000000-0000-4000-8000-000000000000/image');
+        expect(response.status).toEqual(404);
+        expect(response.body).toEqual({});
+    })
+
+    test('returns 404 if the user does not exist', async () => {
+        const response = await request.get('/v1/user/00000000-0000-4000-8000-000000000002/image');
+        expect(response.status).toEqual(404);
+        expect(response.body.status).toEqual('error');
+    })
+})
+