diff --git a/libixx/src/index.rs b/libixx/src/index.rs
index 77f9a08..723686a 100644
--- a/libixx/src/index.rs
+++ b/libixx/src/index.rs
@@ -125,6 +125,10 @@ impl Index {
       .map(|segment| segment.to_lowercase())
       .collect::<Vec<_>>();
 
+    if search.is_empty() {
+      return Ok(vec![]);
+    }
+
     let mut results = Vec::new();
 
     for (idx, option) in self.0.iter().enumerate() {
@@ -139,11 +143,13 @@ impl Index {
       // remove last dot...
       option_name.pop();
 
+      let lower_option_name = option_name.to_lowercase();
+
       let mut start = 0;
 
       'outer: {
         for segment in &search {
-          match option_name[start..].find(segment) {
+          match lower_option_name[start..].find(segment) {
             Some(idx) => start = idx + segment.len(),
             None => break 'outer,
           }
diff --git a/libixx/src/test/mod.rs b/libixx/src/test/mod.rs
index 02e7d64..4ab2ce9 100644
--- a/libixx/src/test/mod.rs
+++ b/libixx/src/test/mod.rs
@@ -1,21 +1,43 @@
-use std::{collections::HashMap, fs::File};
-
 use crate::Index;
 
 #[test]
 fn test() {
-  let options: HashMap<String, crate::option::Option> =
-    serde_json::from_str(include_str!("./options.json")).unwrap();
+  let mut index = Index::default();
 
-  let options = options.keys().collect::<Vec<_>>();
+  index.push("home.enableDebugInfo");
+  index.push("home.enableNixpkgsReleaseCheck");
+  index.push("home.file.<name>.enable");
+  index.push("home.language.measurement");
+  index.push("home.pointerCursor.gtk.enable");
+  index.push("home.pointerCursor.x11.enable");
+  index.push("programs.home-manager.enable");
+  index.push("services.home-manager.autoUpgrade.enable");
+  index.push("services.home-manager.autoUpgrade.frequency");
 
-  let mut index = Index::default();
-  for option in &options {
-    index.push(option);
-  }
+  assert_eq!(
+    index.search("ho*auto", 10).unwrap(),
+    vec![
+      (
+        7usize,
+        "services.home-manager.autoUpgrade.enable".to_string()
+      ),
+      (
+        8usize,
+        "services.home-manager.autoUpgrade.frequency".to_string()
+      )
+    ]
+  );
 
-  println!("{:?}", index.search("ho*exta", 10).unwrap());
+  assert_eq!(
+    index.search("ho*auto*ena", 10).unwrap(),
+    vec![(
+      7usize,
+      "services.home-manager.autoUpgrade.enable".to_string()
+    )]
+  );
 
-  let mut file = File::create("index.nuscht").unwrap();
-  index.write_into(&mut file).unwrap();
+  assert_eq!(
+    index.search("ho*en*Nix", 10).unwrap(),
+    vec![(1usize, "home.enableNixpkgsReleaseCheck".to_string())]
+  );
 }