test: verify BufReadReader skips line on invalid UTF-8

1 files changed, 20 insertions, 0 deletions

diff --git a/src/reader.rs b/src/reader.rs
index b08821f..a987b28 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -173,3 +173,23 @@ impl<'a, R: Read + 'a> IntoReader<'a> for BufReader<R> {
         BufReadReader::new(self)
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::io::{BufReader, ErrorKind};
+    use std::str::Utf8Error;
+
+    use super::{IntoReader, Reader};
+
+    #[test]
+    #[should_panic] // FIXME
+    fn buf_read_reader_invalid_utf8() {
+        let mut reader = BufReader::new(b" \xc3\x28" as &[u8]).into_reader();
+        assert_eq!(reader.read_char().unwrap(), Some(' '));
+        let error = reader.read_char().unwrap_err();
+        assert!(matches!(error.kind(), ErrorKind::InvalidData));
+        error.into_inner().unwrap().downcast::<Utf8Error>().unwrap();
+        assert_eq!(reader.read_char().unwrap(), Some('('));
+        assert_eq!(reader.read_char().unwrap(), None);
+    }
+}