reactive-mail-server/backend/src/test/java/com/mailserver/service/DeliveryFolderTest.java

package com.mailserver.service;

import org.junit.jupiter.api.Test;

import static org.assertj.core.api.Assertions.assertThat;

/** A "+tag" never puts mail into a system folder and never makes a strange folder name. */
class DeliveryFolderTest {

    @Test
    void onlyPlainOwnFolderNames() {
        assertThat(MailService.deliveryFolderName("prod")).isEqualTo("prod");
        assertThat(MailService.deliveryFolderName("alerts.db-1")).isEqualTo("alerts.db-1");
        assertThat(MailService.deliveryFolderName(null)).isNull();
        assertThat(MailService.deliveryFolderName("inbox")).isNull();
        assertThat(MailService.deliveryFolderName("Trash")).isNull();
        assertThat(MailService.deliveryFolderName("spam")).isNull();
        assertThat(MailService.deliveryFolderName("../x")).isNull();
        assertThat(MailService.deliveryFolderName("a".repeat(51))).isNull();
    }
}