refactoring: refactored tests and removed redundant condition in splitcommand

src/builtins/help.rs

@@ -27,7 +27,7 @@ impl Builtin for Help {
 }
 
 fn split_command(commands: &str) -> Vec<&str> {
-    if !commands.is_empty() && commands.trim().len() >= 1 {
+    if commands.trim_start().len() >= 1 {
         let splitted_command = commands.trim_start().splitn(2, " ").collect();
         return splitted_command;
     }
@@ -38,7 +38,6 @@ fn split_command(commands: &str) -> Vec<&str> {
 mod tests {
     use super::*;
 
-
     #[test]
     fn test_split_command_split() {
         let test_string1 = "Hallo, Marcel Davis 1&1.";
@@ -52,7 +51,9 @@ mod tests {
     }
 
     #[test]
-    fn test_split_command_empty(){assert_eq!(split_command(""),vec!["",""])}
+    fn test_split_command_empty() {
+        assert_eq!(split_command(""), vec!["", ""]);
+    }
 
     #[test]
     fn test_split_command_only_space() {