diff --git a/README.md b/README.md
index 02ee5f6..ce838da 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,8 @@ Later, I can even make something useful out of it. For example, I could make it
 * Tests for this history system
 
 # Todo
-* Other tests for the rest of the features
+* Other tests for the rest of the features (add test for write_history_line)
 * Add a builtin history command
+* Add a builtin !<number> like in bash
 * Get some sleep
 * Order the file (modules...)
diff --git a/src/main.rs b/src/main.rs
index ae164ee..005c62a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -166,10 +166,6 @@ fn main(){
 }
 
 
-//tests should be run with a history file such as:
-//1 ls
-//TODO make a function that creates such history file when testing
-
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -195,6 +191,9 @@ mod tests {
         assert_eq!(mycmd, String::from("ls"));
     }
 
+    //test add history line
+
+
 
 }