fix: remove errors.Wrap(nil) (#4576)

* Fix errors.Wrap(nil)

* fix resource_test failure where resource does not exist

store/db/mysql/inbox.go

@@ -110,7 +110,7 @@ func (d *DB) GetInbox(ctx context.Context, find *store.FindInbox) (*store.Inbox,
 		return nil, errors.Wrap(err, "failed to get inbox")
 	}
 	if len(list) != 1 {
-		return nil, errors.Wrapf(nil, "unexpected inbox count: %d", len(list))
+		return nil, errors.Errorf("unexpected inbox count: %d", len(list))
 	}
 	return list[0], nil
 }

store/db/mysql/user.go

@@ -32,7 +32,7 @@ func (d *DB) CreateUser(ctx context.Context, create *store.User) (*store.User, e
 		return nil, err
 	}
 	if len(list) != 1 {
-		return nil, errors.Wrapf(nil, "unexpected user count: %d", len(list))
+		return nil, errors.Errorf("unexpected user count: %d", len(list))
 	}
 
 	return list[0], nil
@@ -142,7 +142,7 @@ func (d *DB) GetUser(ctx context.Context, find *store.FindUser) (*store.User, er
 		return nil, err
 	}
 	if len(list) != 1 {
-		return nil, errors.Wrapf(nil, "unexpected user count: %d", len(list))
+		return nil, errors.Errorf("unexpected user count: %d", len(list))
 	}
 	return list[0], nil
 }

store/db/postgres/inbox.go

@@ -100,7 +100,7 @@ func (d *DB) GetInbox(ctx context.Context, find *store.FindInbox) (*store.Inbox,
 		return nil, errors.Wrap(err, "failed to get inbox")
 	}
 	if len(list) != 1 {
-		return nil, errors.Wrapf(nil, "unexpected inbox count: %d", len(list))
+		return nil, errors.Errorf("unexpected inbox count: %d", len(list))
 	}
 	return list[0], nil
 }

store/resource.go

@@ -103,7 +103,7 @@ func (s *Store) DeleteResource(ctx context.Context, delete *DeleteResource) erro
 		return errors.Wrap(err, "failed to get resource")
 	}
 	if resource == nil {
-		return errors.Wrap(nil, "resource not found")
+		return errors.New("resource not found")
 	}
 
 	if resource.StorageType == storepb.ResourceStorageType_LOCAL {

store/test/resource_test.go

@@ -58,6 +58,6 @@ func TestResourceStore(t *testing.T) {
 	err = ts.DeleteResource(ctx, &store.DeleteResource{
 		ID: 2,
 	})
-	require.NoError(t, err)
+	require.ErrorContains(t, err, "resource not found")
 	ts.Close()
 }