import type { Diff } from 'deep-diff';
import { describe, expect, it } from 'vitest';
import type { SnapshotField } from '../types/snapshot.js';

import { isNestedMetaUpdate } from './apply-diff.js';

describe('isNestedMetaUpdate', () => {
	it.each([
		{ kind: 'E', path: ['meta', 'options', 'option_a'], rhs: {} },
		{ kind: 'A', path: ['meta', 'options', 'option_a'], rhs: [] },
	] as Diff<SnapshotField>[])('Returns false when diff is kind $kind', (diff) => {
		expect(isNestedMetaUpdate(diff)).toBe(false);
	});

	it.each([
		{ kind: 'N', path: ['schema', 'default_value'], rhs: {} },
		{ kind: 'D', path: ['schema'], lhs: {} },
	] as Diff<SnapshotField>[])('Returns false when diff path is not nested in meta', (diff) => {
		expect(isNestedMetaUpdate(diff)).toBe(false);
	});

	it.each([
		{ kind: 'N', path: ['meta', 'options', 'option_a'], rhs: { test: 'value' } },
		{ kind: 'D', path: ['meta', 'options', 'option_b'], lhs: {} },
	] as Diff<SnapshotField>[])('Returns true when diff path is nested in meta', (diff) => {
		expect(isNestedMetaUpdate(diff)).toBe(true);
	});
});