test: add unit tests for scheduled Bitcoin price job handler

backend/worker.py

@@ -98,6 +98,36 @@ def register_job_handlers(qm: QueueManager, db_pool: asyncpg.Pool) -> None:
         await process_random_number_job(job, db_pool)
 
 
+async def process_bitcoin_price_job(db_pool: asyncpg.Pool) -> None:
+    """
+    Fetch and store Bitcoin price from Bitfinex.
+
+    This function is designed to fail silently - exceptions are caught and logged
+    so the scheduler can continue with the next scheduled run.
+    """
+    try:
+        price, timestamp = await fetch_btc_eur_price()
+
+        async with db_pool.acquire() as conn:
+            await conn.execute(
+                """
+                INSERT INTO price_history
+                    (source, pair, price, timestamp, created_at)
+                VALUES ($1, $2, $3, $4, NOW())
+                ON CONFLICT (source, pair, timestamp) DO NOTHING
+                """,
+                "bitfinex",
+                "BTC/EUR",
+                price,
+                timestamp,
+            )
+
+        logger.info(f"Fetched BTC/EUR price: €{price:.2f}")
+    except Exception as e:
+        # Fail silently - next scheduled job will continue
+        logger.error(f"Failed to fetch Bitcoin price: {e}")
+
+
 def register_scheduled_jobs(sm: SchedulerManager, db_pool: asyncpg.Pool) -> None:
     """Register all scheduled jobs with the scheduler manager."""
 
@@ -105,27 +135,7 @@ def register_scheduled_jobs(sm: SchedulerManager, db_pool: asyncpg.Pool) -> None
     @sm.schedule(JOB_FETCH_BITCOIN_PRICE, "* * * * *")
     async def fetch_bitcoin_price(schedule: Schedule) -> None:
         """Fetch Bitcoin price from Bitfinex every minute."""
-        try:
-            price, timestamp = await fetch_btc_eur_price()
-
-            async with db_pool.acquire() as conn:
-                await conn.execute(
-                    """
-                    INSERT INTO price_history
-                        (source, pair, price, timestamp, created_at)
-                    VALUES ($1, $2, $3, $4, NOW())
-                    ON CONFLICT (source, pair, timestamp) DO NOTHING
-                    """,
-                    "bitfinex",
-                    "BTC/EUR",
-                    price,
-                    timestamp,
-                )
-
-            logger.info(f"Fetched BTC/EUR price: €{price:.2f}")
-        except Exception as e:
-            # Fail silently - next scheduled job will continue
-            logger.error(f"Failed to fetch Bitcoin price: {e}")
+        await process_bitcoin_price_job(db_pool)
 
 
 async def main() -> None: