import { describe, it } from "node:test";
import assert from "node:assert/strict";
import { truncateResult, getLocalIP, serializeHeaders, capString } from "../../src/utils.js";
describe("truncateResult", () => {
it("returns short data unchanged", () => {
const data = { foo: "bar" };
const result = truncateResult(data);
assert.equal(result, JSON.stringify(data));
});
it("truncates large arrays with binary search", () => {
const data = Array.from({ length: 5000 }, (_, i) => ({ id: i, value: "x".repeat(100) }));
const result = truncateResult(data);
const parsed = JSON.parse(result);
assert.equal(parsed.truncated, true);
assert.ok(parsed.showing < 5000);
assert.equal(parsed.total, 5000);
assert.ok(result.length <= 24000);
});
it("truncates large strings", () => {
const data = "x".repeat(30000);
const result = truncateResult(data);
assert.ok(result.length <= 24000);
assert.ok(result.includes("[truncated"));
});
});
describe("getLocalIP", () => {
it("returns a valid IP string", () => {
const ip = getLocalIP();
assert.ok(typeof ip === "string");
assert.ok(ip.length > 0);
});
});
describe("serializeHeaders", () => {
it("lowercases keys and joins arrays", () => {
const headers = {
"Content-Type": "application/json",
"X-Custom": ["a", "b"],
"X-Undefined": undefined,
};
const result = serializeHeaders(headers);
assert.equal(result["content-type"], "application/json");
assert.equal(result["x-custom"], "a, b");
assert.ok(!("x-undefined" in result));
});
});
describe("capString", () => {
it("returns short strings unchanged", () => {
assert.equal(capString("hello", 10), "hello");
});
it("truncates long strings with ellipsis", () => {
assert.equal(capString("hello world", 5), "hello...");
});
});
