refactor: export functions to be used for testing

Author: wiktoriavh

test/advent-scheduler.test.mjs src/util/advent-scheduler.test.tstest/advent-scheduler.test.mjs renamed to src/util/advent-scheduler.test.ts

@@ -3,41 +3,23 @@ import { promises as fs } from 'node:fs';
 import test from 'node:test';
 
 const TEST_TRACKER_FILE = 'test-advent-tracker.json';
+process.env.ADVENT_OF_CODE_TRACKER_PATH = TEST_TRACKER_FILE;
 
-/**
- * Helper function to load tracker data
- */
-async function loadTracker(filename) {
-  try {
-    const data = await fs.readFile(filename, 'utf-8');
-    return JSON.parse(data);
-  } catch (error) {
-    return {};
-  }
-}
-
-/**
- * Helper function to save tracker data
- */
-async function saveTracker(filename, data) {
-  await fs.writeFile(filename, JSON.stringify(data, null, 2), 'utf-8');
-}
+// Import after setting env var
+const { loadTracker, saveTracker } = await import('./advent-scheduler.js');
 
-/**
- * Helper function to clean up test tracker file
- */
 async function cleanupTestTracker() {
   try {
     await fs.unlink(TEST_TRACKER_FILE);
-  } catch (error) {
+  } catch (_error) {
     // File might not exist, that's fine
   }
 }
 
 test('advent scheduler: tracker file operations', async (t) => {
   await t.test('should create empty tracker if file does not exist', async () => {
     await cleanupTestTracker();
-    const tracker = await loadTracker(TEST_TRACKER_FILE);
+    const tracker = await loadTracker();
     assert.deepEqual(tracker, {});
   });
 
@@ -46,17 +28,17 @@ test('advent scheduler: tracker file operations', async (t) => {
       '2025': [1, 2, 3],
       '2026': [1],
     };
-    await saveTracker(TEST_TRACKER_FILE, testData);
-    const loaded = await loadTracker(TEST_TRACKER_FILE);
+    await saveTracker(testData);
+    const loaded = await loadTracker();
     assert.deepEqual(loaded, testData);
   });
 
   await t.test('should track multiple days per year', async () => {
     const tracker = {
       '2025': [1, 5, 10, 15, 20, 25],
     };
-    await saveTracker(TEST_TRACKER_FILE, tracker);
-    const loaded = await loadTracker(TEST_TRACKER_FILE);
+    await saveTracker(tracker);
+    const loaded = await loadTracker();
     assert.equal(loaded['2025'].length, 6);
     assert.ok(loaded['2025'].includes(1));
     assert.ok(loaded['2025'].includes(25));

src/util/advent-scheduler.ts

@@ -1,4 +1,4 @@
-import { ChannelType, type Client, type ForumChannel } from 'discord.js';
+import { ChannelType, type Client } from 'discord.js';
 import * as cron from 'node-cron';
 import { promises as fs } from 'node:fs';
 import { config } from '../env.js';
@@ -9,10 +9,7 @@ type TrackerData = {
   [year: string]: number[];
 };
 
-/**
- * Load the tracker file to see which days have already been posted
- */
-async function loadTracker(): Promise<TrackerData> {
+export async function loadTracker(): Promise<TrackerData> {
   try {
     const data = await fs.readFile(TRACKER_FILE, 'utf-8');
     return JSON.parse(data);
@@ -22,25 +19,16 @@ async function loadTracker(): Promise<TrackerData> {
   }
 }
 
-/**
- * Save the tracker file with updated data
- */
-async function saveTracker(data: TrackerData): Promise<void> {
+export async function saveTracker(data: TrackerData): Promise<void> {
   await fs.writeFile(TRACKER_FILE, JSON.stringify(data, null, 2), 'utf-8');
 }
 
-/**
- * Check if a specific day has already been posted for a given year
- */
 async function isDayPosted(year: number, day: number): Promise<boolean> {
   const tracker = await loadTracker();
   const yearData = tracker[year.toString()];
   return yearData ? yearData.includes(day) : false;
 }
 
-/**
- * Mark a day as posted for a given year
- */
 async function markDayAsPosted(year: number, day: number): Promise<void> {
   const tracker = await loadTracker();
   const yearKey = year.toString();
@@ -56,9 +44,6 @@ async function markDayAsPosted(year: number, day: number): Promise<void> {
   }
 }
 
-/**
- * Create a forum post for a specific Advent of Code day
- */
 async function createAdventPost(
   client: Client,
   channelId: string,
@@ -78,7 +63,7 @@ async function createAdventPost(
       return false;
     }
 
-    const forumChannel = channel as ForumChannel;
+    const forumChannel = channel;
     const title = `Day ${day}, ${year}`;
     const content = `https://adventofcode.com/${year}/day/${day}`;