refactoring: fix clippy warnings inside the split_command function

src/builtins/help.rs

@@ -1,6 +1,6 @@
-use colored::Colorize;
 use crate::builtins::{Builtin, BuiltinConfig};
 use crate::error::ShellError;
+use colored::Colorize;
 
 pub struct Help;
 
@@ -21,18 +21,22 @@ impl Builtin for Help {
             ";
 
         for line in commands.lines() {
-            println!("{}{}", split_command(line)[0].bold(), split_command(line)[1]);
+            println!(
+                "{}{}",
+                split_command(line)[0].bold(),
+                split_command(line)[1]
+            );
         }
         Ok(())
     }
 }
 
 fn split_command(commands: &str) -> Vec<&str> {
-    if commands.trim_start().len() >= 1 {
-        let splitted_command = commands.trim_start().splitn(2, " ").collect();
+    if !commands.trim_start().is_empty() {
+        let splitted_command = commands.trim_start().splitn(2, ' ').collect();
         return splitted_command;
     }
-    return vec!["", ""];
+    vec!["", ""]
 }
 
 #[cfg(test)]
@@ -42,13 +46,22 @@ mod tests {
     #[test]
     fn test_split_command_split() {
         let test_string1 = "Hallo, Marcel Davis 1&1.";
-        assert_eq!(split_command(test_string1), vec!["Hallo,", "Marcel Davis 1&1."]);
+        assert_eq!(
+            split_command(test_string1),
+            vec!["Hallo,", "Marcel Davis 1&1."]
+        );
 
         let test_string2 = "Leiter1 23für Kundenzufriedenheit.";
-        assert_eq!(split_command(test_string2), vec!["Leiter1", "23für Kundenzufriedenheit."]);
+        assert_eq!(
+            split_command(test_string2),
+            vec!["Leiter1", "23für Kundenzufriedenheit."]
+        );
 
         let test_string3 = "Wir# $%gehen erst wieder, wenn ihre Leitung läuft!";
-        assert_eq!(split_command(test_string3), vec!["Wir#", "$%gehen erst wieder, wenn ihre Leitung läuft!"]);
+        assert_eq!(
+            split_command(test_string3),
+            vec!["Wir#", "$%gehen erst wieder, wenn ihre Leitung läuft!"]
+        );
     }
 
     #[test]