import { describe, expect, it } from "vitest";
import { z } from "zod";
import { ClientRequestError, mapErrorToResponse } from "../src/route/error_handler.ts";

describe("error_handler", () => {
	it("formats ClientRequestError with provided status", () => {
		const { status, body } = mapErrorToResponse(new ClientRequestError(400, "invalid payload"));
		expect(status).toBe(400);
		expect(body).toEqual({
			code: 400,
			message: "BadRequest",
			detail: "invalid payload",
		});
	});

	it("coerces ZodError into a 400 response", () => {
		const schema = z.object({ foo: z.string() });
		const parseResult = schema.safeParse({});

		if (parseResult.success) {
			throw new Error("Expected validation error");
		}

		const { status, body } = mapErrorToResponse(parseResult.error);

		expect(status).toBe(400);
		expect(body.code).toBe(400);
		expect(body.message).toBe("BadRequest");
		expect(body.detail).toContain("expected string");
	});

	it("defaults to 500 for unexpected errors", () => {
		const { status, body } = mapErrorToResponse(new Error("boom"));

		expect(status).toBe(500);
		expect(body).toEqual({
			code: 500,
			message: "Internal Server Error",
			detail: "boom",
		});
	});
});