code refactor

Reviewed-on: #26

crates/application/tests/jobs/tombstone_cleanup_test.rs

@@ -0,0 +1,59 @@
+use std::sync::{Arc, Mutex};
+
+use application::jobs::{TOMBSTONE_RETENTION_DAYS, TombstoneCleanupJob};
+use async_trait::async_trait;
+use domain::{
+    errors::DomainError,
+    ports::{AccountPurger, PeriodicJob},
+    value_objects::UserId,
+};
+
+#[derive(Default)]
+struct Purger {
+    cutoffs: Mutex<Vec<chrono::NaiveDateTime>>,
+}
+
+#[async_trait]
+impl AccountPurger for Purger {
+    async fn is_purged(&self, _: &UserId) -> Result<bool, DomainError> {
+        unimplemented!()
+    }
+    async fn owned_image_keys(&self, _: &UserId) -> Result<Vec<String>, DomainError> {
+        unimplemented!()
+    }
+    async fn purge(&self, _: &UserId) -> Result<(), DomainError> {
+        unimplemented!()
+    }
+    async fn forget_images(&self, _: &UserId) -> Result<(), DomainError> {
+        unimplemented!()
+    }
+    async fn purge_expired_tombstones(
+        &self,
+        cutoff: chrono::NaiveDateTime,
+    ) -> Result<u64, DomainError> {
+        self.cutoffs.lock().unwrap().push(cutoff);
+        Ok(0)
+    }
+}
+
+#[tokio::test]
+async fn removes_tombstones_purged_before_the_retention_window() {
+    assert_eq!(TOMBSTONE_RETENTION_DAYS, 7);
+    let purger = Arc::new(Purger::default());
+
+    TombstoneCleanupJob::new(purger.clone())
+        .run()
+        .await
+        .unwrap();
+
+    let cutoffs = purger.cutoffs.lock().unwrap();
+    let expected = chrono::Utc::now().naive_utc() - chrono::Duration::days(7);
+    assert_eq!(cutoffs.len(), 1);
+    assert!((cutoffs[0] - expected).num_seconds().abs() < 5);
+}
+
+#[test]
+fn runs_daily() {
+    let job = TombstoneCleanupJob::new(Arc::new(Purger::default()));
+    assert_eq!(job.interval(), std::time::Duration::from_secs(86_400));
+}