diff --git a/src/error.rs b/src/error.rs
index a91edfd7e..d2808533b 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -393,6 +393,14 @@ mod tests {
         assert_eq!(e, HttpRangeError::NoOverlap);
     }
 
+    #[test]
+    fn test_expect_error() {
+        let resp: HttpResponse = ExpectError::Encoding.error_response();
+        assert_eq!(resp.status(), StatusCode::EXPECTATION_FAILED);
+        let resp: HttpResponse = ExpectError::UnknownExpect.error_response();
+        assert_eq!(resp.status(), StatusCode::EXPECTATION_FAILED);
+    }
+
     #[test]
     fn test_wserror_http_response() {
         let resp: HttpResponse = WsHandshakeError::GetMethodRequired.error_response();