Added even more tests. Should be fine now.

hw9/task1/tests/task1.rs

@@ -45,6 +45,16 @@ mod tests {
         assert_eq!(parse("RETRIEVE Hello\n"), Ok(Command::Retrieve))
     }
 
+    #[test]
+    fn empty_with_newline_returns_correct_command() {
+        assert_eq!(parse("\n12341234\n"), Err(ParseError(ErrorType::EmptyString)))
+    }
+
+    #[test]
+    fn not_known_command_with_newline_returns_correct_command() {
+        assert_eq!(parse("Hello\n123\n"), Err(ParseError(ErrorType::UnknownCommand)))
+    }
+
     #[test]
     fn stage_with_newline_returns_correct_command() {
         assert_eq!(parse("STAGE 123\n456"), Ok(Command::Stage("123".to_string())))