import { describe, it, expect, vi } from "vitest";
import { listFolders } from "./folders.js";
import type { ImapClient } from "./client.js";
function createMockImapClient(mailboxes: any[]) {
const mockClient = {
list: vi.fn().mockResolvedValue(mailboxes),
};
const imapClient = {
connect: vi.fn().mockResolvedValue(mockClient),
} as unknown as ImapClient;
return { imapClient, mockClient };
}
describe("listFolders", () => {
it("returns empty array when no mailboxes exist", async () => {
const { imapClient } = createMockImapClient([]);
const result = await listFolders(imapClient);
expect(result).toEqual([]);
});
it("maps mailbox properties to folder entries", async () => {
const { imapClient } = createMockImapClient([
{ path: "INBOX", name: "INBOX", delimiter: "/", flags: new Set() },
{ path: "INBOX/Receipts", name: "Receipts", delimiter: "/", flags: new Set() },
{ path: "Sent", name: "Sent", delimiter: "/", flags: new Set(["\\Sent"]) },
]);
const result = await listFolders(imapClient);
expect(result).toHaveLength(3);
expect(result[0]).toEqual({ path: "INBOX", name: "INBOX", delimiter: "/" });
expect(result[1]).toEqual({ path: "INBOX/Receipts", name: "Receipts", delimiter: "/" });
expect(result[2]).toEqual({ path: "Sent", name: "Sent", delimiter: "/" });
});
it("only includes path, name, and delimiter (strips extra properties)", async () => {
const { imapClient } = createMockImapClient([
{
path: "INBOX",
name: "INBOX",
delimiter: ".",
flags: new Set(["\\HasNoChildren"]),
specialUse: "\\Inbox",
listed: true,
subscribed: true,
},
]);
const result = await listFolders(imapClient);
expect(Object.keys(result[0])).toEqual(["path", "name", "delimiter"]);
});
it("handles dot delimiter servers", async () => {
const { imapClient } = createMockImapClient([
{ path: "INBOX", name: "INBOX", delimiter: "." },
{ path: "INBOX.Archive", name: "Archive", delimiter: "." },
]);
const result = await listFolders(imapClient);
expect(result[1]).toEqual({ path: "INBOX.Archive", name: "Archive", delimiter: "." });
});
});
