Added delete error.

src/morethantext/mod.rs

@@ -199,12 +199,16 @@ impl MoreThanText {
         Ok(())
     }
 
-    async fn delete_entry(&self, id: &str) {
+    async fn delete_entry(&self, id: &str) -> Result<(), DBError> {
         let mut cache = self.cache.lock().await;
         cache.remove(id);
         match remove_file(Path::new(&self.filename(id))).await {
-            Ok(_) => (),
+            Ok(_) => Ok(()),
-            Err(_) => (),
+            Err(err) => {
+                let mut error = DBError::new("data delete");
+                error.add_source(err);
+                Err(error)
+            }
         }
     }
 }
@@ -446,7 +450,7 @@ mod cache {
             .add_entry(CacheType::Raw("delete".to_string()))
             .await
             .unwrap();
-        mtt.db.delete_entry(&id).await;
+        mtt.db.delete_entry(&id).await.unwrap();
         match mtt.db.get_entry(&id).await {
             Ok(_) => assert!(false, "Entry should be removed from cache."),
             Err(_) => (),
@@ -456,7 +460,16 @@ mod cache {
     #[async_std::test]
     async fn remove_missing_entry() {
         let mtt = MTT::new().await;
-        mtt.db.delete_entry("missing").await;
+        let msg = "could not remove file";
+        match mtt.db.delete_entry("missing").await {
+            Ok(_) => assert!(false, "This should produce a write failure."),
+            Err(err) => {
+                assert_eq!(err.to_string(), "data delete");
+                assert!(err.source().is_some(), "Must include the source error.");
+                let err_msg = err.source().unwrap().to_string();
+                assert!(err_msg.contains(msg), "'{}' not in '{}'", msg, err_msg);
+            }
+        }
     }
 
     #[async_std::test]