Added random cache ids.

src/morethantext/mod.rs

@@ -1,7 +1,8 @@
 pub mod error;
-use async_std::{fs::create_dir, path::Path};
 
+use async_std::{fs::create_dir, path::Path};
 use error::DBError;
+use rand::{distributions::Alphanumeric, thread_rng, Rng};
 
 const DATA: &str = "data";
 
@@ -29,7 +30,8 @@ impl MoreThanText {
     }
 
     async fn add_entry(&self, _entry: CacheEntry) -> String {
-        "fred".to_string()
+        let id: String = thread_rng().sample_iter(&Alphanumeric).take(32).collect();
+        return id;
     }
 }
 
@@ -100,9 +102,12 @@ mod cache {
     use setup::MTT;
 
     #[async_std::test]
-    async fn add_entry() {
+    async fn ids_are_random() {
         let mtt = MTT::new().await;
-        let data = CacheEntry::Raw("something".to_string());
-        mtt.db.add_entry(data).await;
+        let data1 = CacheEntry::Raw("one".to_string());
+        let data2 = CacheEntry::Raw("two".to_string());
+        let id1 = mtt.db.add_entry(data1).await;
+        let id2 = mtt.db.add_entry(data2).await;
+        assert_ne!(id1, id2, "Ids should be unique.")
     }
 }