Add mock implementation of user recommendation endpoint for testing

test/user_test.go

@@ -150,6 +150,16 @@ func (mockUser) SelectByUsernameLike(username string) ([]schemas.InfoUserSchema,
 	return users, nil
 }
 
+func (mockUser) SelectUserRecommendations(userID uint32, count uint32) ([]schemas.InfoUserSchema, error) {
+	var users []schemas.InfoUserSchema
+	for _, u := range mockUsers {
+		if u.ID != userID {
+			users = append(users, getMockUserInfo(u))
+		}
+	}
+	return users, nil
+}
+
 // Users with IDs 1-3 have authentication. Everyone else will be rejected.
 func (mockUser) Authenticate(name string, password string) (uint32, error) {
 	if correctpassword, ok := mockUserPasswords[name]; ok && password == correctpassword {