NotePermissions: Remove default constructors

As discussed in #835 we don't want to have default constructors and prefer .create methods.
Because the created NoteGroupPermission and NoteUserPermission are not saved to the DB by themselves, but are saved via a change to the Note using a Pick<Class, attributes>-style return type is not helpful here as every single time the .create functions are called a full object is required.
The mock calls in the PermissionService test are not needed and break the .create calls so they got removed.

Signed-off-by: Philip Molares <philip.molares@udo.edu>

src/permissions/note-group-permission.entity.ts

@@ -18,4 +18,14 @@ export class NoteGroupPermission {
 
   @Column()
   canEdit: boolean;
+
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
+  private constructor() {}
+
+  public static create(group: Group, canEdit: boolean): NoteGroupPermission {
+    const groupPermission = new NoteGroupPermission();
+    groupPermission.group = group;
+    groupPermission.canEdit = canEdit;
+    return groupPermission;
+  }
 }

src/permissions/note-user-permission.entity.ts

@@ -18,4 +18,14 @@ export class NoteUserPermission {
 
   @Column()
   canEdit: boolean;
+
+  // eslint-disable-next-line @typescript-eslint/no-empty-function
+  private constructor() {}
+
+  public static create(user: User, canEdit: boolean): NoteUserPermission {
+    const userPermission = new NoteUserPermission();
+    userPermission.user = user;
+    userPermission.canEdit = canEdit;
+    return userPermission;
+  }
 }

src/permissions/permissions.service.spec.ts

@@ -23,11 +23,6 @@ import { Revision } from '../revisions/revision.entity';
 import { Tag } from '../notes/tag.entity';
 import { Group } from '../groups/group.entity';
 
-jest.mock('../permissions/note-group-permission.entity.ts');
-jest.mock('../groups/group.entity.ts');
-jest.mock('../notes/note.entity.ts');
-jest.mock('../users/user.entity.ts');
-
 describe('PermissionsService', () => {
   let permissionsService: PermissionsService;
 
@@ -292,10 +287,7 @@ describe('PermissionsService', () => {
       group: Group,
       write: boolean,
     ): NoteGroupPermission {
-      const noteGroupPermission = new NoteGroupPermission();
-      noteGroupPermission.canEdit = write;
-      noteGroupPermission.group = group;
-      return noteGroupPermission;
+      return NoteGroupPermission.create(group, write);
     }
 
     const everybodyRead = createNoteGroupPermission(groups['everybody'], false);