Fixed unit tests

pkg/models/task_readall_test.go

@@ -8,6 +8,7 @@ package models
 
 import (
 	"code.vikunja.io/api/pkg/db"
+	"code.vikunja.io/api/pkg/files"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/d4l3k/messagediff.v1"
 	"sort"
@@ -68,6 +69,29 @@ func sortTasksForTesting(by SortBy) (tasks []*Task) {
 					},
 				},
 			},
+			Attachments: []*TaskAttachment{
+				{
+					ID:          1,
+					TaskID:      1,
+					FileID:      1,
+					CreatedByID: 1,
+					CreatedBy:   user1,
+					File: &files.File{
+						ID:          1,
+						Name:        "test",
+						Size:        100,
+						CreatedUnix: 1570998791,
+						CreatedByID: 1,
+					},
+				},
+				{
+					ID:          2,
+					TaskID:      1,
+					FileID:      9999,
+					CreatedByID: 1,
+					CreatedBy:   user1,
+				},
+			},
 			Created: 1543626724,
 			Updated: 1543626724,
 		},