import {
filterDocumentFields,
filterDocumentsByWhere,
truncateDocuments,
} from "../src/core/document-utils.js";
describe("document utils", () => {
test("filterDocumentFields returns original when requestedFields empty", () => {
const doc = { _id: "1", name: "A", extra: 1 };
expect(filterDocumentFields(doc, null)).toBe(doc);
expect(filterDocumentFields(doc, [])).toBe(doc);
});
test("filterDocumentFields includes requested and required fields", () => {
const doc = { _id: "1", name: "A", extra: 1, skip: true };
expect(filterDocumentFields(doc, ["extra"]))
.toEqual({ _id: "1", name: "A", extra: 1 });
});
test("filterDocumentFields ignores missing fields", () => {
const doc = { _id: "1", name: "A" };
expect(filterDocumentFields(doc, ["missing"]))
.toEqual({ _id: "1", name: "A" });
});
test("truncateDocuments keeps docs under limit", () => {
const docs = [{ a: 1 }, { b: 2 }];
const maxLength = Buffer.byteLength(JSON.stringify(docs), "utf-8");
expect(truncateDocuments(docs, maxLength)).toEqual(docs);
});
test("truncateDocuments removes until under limit", () => {
const docs = [{ a: "a".repeat(50) }, { b: "b".repeat(50) }];
const maxLength = Buffer.byteLength(JSON.stringify([docs[0]]), "utf-8");
expect(truncateDocuments(docs, maxLength)).toEqual([docs[0]]);
});
test("truncateDocuments returns empty when too small", () => {
const docs = [{ a: "a" }];
expect(truncateDocuments(docs, 1)).toEqual([]);
});
test("filterDocumentsByWhere returns original when no filter", () => {
const docs = [{ a: 1 }];
expect(filterDocumentsByWhere(docs, null)).toBe(docs);
expect(filterDocumentsByWhere(docs, {})).toBe(docs);
});
test("filterDocumentsByWhere filters by all keys", () => {
const docs = [
{ type: "npc", folder: "f1" },
{ type: "npc", folder: "f2" },
{ type: "pc", folder: "f1" },
];
expect(filterDocumentsByWhere(docs, { type: "npc", folder: "f1" }))
.toEqual([{ type: "npc", folder: "f1" }]);
});
});
