test: add parse line complex word test

src/parse.rs

@@ -26,4 +26,19 @@ mod tests {
             Ok(("keyword", vec!["arg1".to_string(), "arg2".to_string()]))
         )
     }
+
+    #[test]
+    fn test_parse_complex() {
+        assert_eq!(
+            parse_line("keyword 'this is arg 1' arg2 \"arg3 \""),
+            Ok((
+                "keyword",
+                vec![
+                    "this is arg 1".to_string(),
+                    "arg2".to_string(),
+                    "arg3 ".to_string()
+                ]
+            ))
+        )
+    }
 }