/**
 * Snapshot test: the frontend `CONTRACT_FIXTURES` table must match the
 * Rust-side snapshot.  When the Rust contract changes, the snapshot file
 * regenerates (via `UPDATE_RPC_CONTRACT_SNAPSHOT=1 cargo test`) and this
 * test catches any TS shapes that have drifted.
 */
import { describe, expect, it } from "vitest";
import { CONTRACT_FIXTURES } from "./rpcContract";
import snapshot from "./rpcContract.snapshot.json";

describe("rpcContract", () => {
	it("CONTRACT_FIXTURES matches the Rust-generated snapshot", () => {
		// Convert TS fixtures into the same shape the Rust snapshot serialises
		// to: a method-keyed object of `{ params, result }`.
		const fromTs = Object.fromEntries(
			Object.entries(CONTRACT_FIXTURES).map(([method, payloads]) => [
				method,
				{ params: payloads.params, result: payloads.result },
			]),
		);
		expect(fromTs).toEqual(snapshot);
	});

	it("declares the same method names as the snapshot", () => {
		const tsMethods = Object.keys(CONTRACT_FIXTURES).sort();
		const rustMethods = Object.keys(snapshot).sort();
		expect(tsMethods).toEqual(rustMethods);
	});
});