import { describe, expect, it } from "vitest";

import { assertJsonSafe } from "./emit-manifest.js";

describe("assertJsonSafe", () => {
	it("accepts plain JSON values, including nested objects and arrays", () => {
		expect(() =>
			assertJsonSafe(
				{
					name: "workflow",
					count: 3,
					enabled: true,
					missing: null,
					tags: ["a", "b"],
					nested: { list: [1, 2, { deep: "value" }] },
				},
				"config",
			),
		).not.toThrow();
	});

	it("omits undefined-valued object properties without throwing", () => {
		expect(() => assertJsonSafe({ a: undefined, b: 1 }, "config")).not.toThrow();
	});

	it.each([
		["function", { a: () => {} }],
		["symbol", { a: Symbol("x") }],
		["bigint", { a: 1n }],
		["NaN", { a: Number.NaN }],
		["Infinity", { a: Number.POSITIVE_INFINITY }],
		["Map", { a: new Map() }],
		["Set", { a: new Set() }],
		["Date", { a: new Date(0) }],
		["undefined array element", { a: [undefined] }],
	])("throws for non-serializable %s", (_label, value) => {
		expect(() => assertJsonSafe(value, "config")).toThrow(/not JSON-serializable/);
	});

	it("includes the path to the offending value in the error", () => {
		expect(() =>
			assertJsonSafe({ outer: { inner: () => {} } }, "src/workflows/foo.ts config"),
		).toThrow("src/workflows/foo.ts config.outer.inner");
	});
});