Make store list work.

src/morethantext/store.rs

@@ -32,7 +32,12 @@ impl Store {
     }
 
     pub fn list(&self) -> Vec<String> {
-        Vec::new()
+        let mut names = Vec::new();
+        for name in self.data.keys() {
+            names.push(name.to_string());
+        }
+        names.sort();
+        names
     }
 }
 
@@ -90,4 +95,15 @@ mod storage {
             None => Ok(()),
         }
     }
+
+    #[test]
+    fn get_list() {
+        let mut store = Store::new();
+        let mut ids = ["one", "two", "three", "four", "five"];
+        for name in ids {
+            store.add(name.to_string()).unwrap();
+        }
+        ids.sort();
+        assert_eq!(store.list(), ids);
+    }
 }