Fix upcoming assignments mock fetching

src/services/mocks.js

@@ -144,7 +144,7 @@ const allAssignments = [
     classrooms: allClassrooms.filter(c => c.id === '666'),
   },
   {
-    id: '1234',
+    id: '9283764',
     type: 'assessment',
     title: 'Atividade 2 - Estudo de caso Sapiens Informática',
     description:

src/services/user-service.js

@@ -38,8 +38,8 @@ const getUpcomingAssignmentsByClassId = classId =>
   sleep(300).then(() => {
     console.log('Getting upcoming assignments by class id ' + classId);
     return {
-      data: allUpcomingAssignments.filter(a =>
-        a.classrooms.filter(c => c.id === classId)
+      data: allUpcomingAssignments.filter(
+        a => a.classrooms.filter(c => c.id === classId)[0]
       ),
     };
   });