more tests

src/date.rs

@@ -58,3 +58,12 @@ impl fmt::Write for CachedDate {
 fn test_date_len() {
     assert_eq!(DATE_VALUE_LENGTH, "Sun, 06 Nov 1994 08:49:37 GMT".len());
 }
+
+#[test]
+fn test_date() {
+    let mut buf1 = BytesMut::new();
+    extend(&mut buf1);
+    let mut buf2 = BytesMut::new();
+    extend(&mut buf2);
+    assert_eq!(buf1, buf2);
+}

src/error.rs

@@ -144,7 +144,21 @@ mod tests {
     use std::error::Error as StdError;
     use std::io;
     use httparse;
-    use super::ParseError;
+    use http::StatusCode;
+    use cookie::ParseError as CookieParseError;
+    use super::{ParseError, HttpResponse, HttpRangeParseError};
+
+    #[test]
+    fn test_into_response() {
+        let resp: HttpResponse = ParseError::Incomplete.into();
+        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
+
+        let resp: HttpResponse = HttpRangeParseError::InvalidRange.into();
+        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
+
+        let resp: HttpResponse = CookieParseError::EmptyName.into();
+        assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
+}
 
     #[test]
     fn test_cause() {