test: add parse line test

src/parse.rs

@@ -23,7 +23,15 @@ mod tests {
     fn test_tokenize() {
         assert_eq!(
             tokenize("test arg1 arg2 arg3"),
-            ["test", "arg1", "arg2", "arg3"]
+            vec!["test", "arg1", "arg2", "arg3"]
+        );
+    }
+
+    #[test]
+    fn test_parse_line() {
+        assert_eq!(
+            parse_line("test arg1 arg2 arg3"),
+            ("test", vec!["arg1", "arg2", "arg3"])
         );
     }
 }