fix bug in combining query strings

src/conn.rs

@@ -30,12 +30,7 @@ impl ConnectionPool {
 
         let hostname = url.host_str().unwrap_or("localhost"); // is localhost a good alternative?
 
-        let query_string = match (url.query(), request.query.len() > 0) {
-            (Some(urlq), true) => format!("?{}{}", urlq, request.query),
-            (Some(urlq), false) => format!("?{}", urlq),
-            (None, true) => format!("?{}", request.query),
-            (None, false) => "".to_string(),
-        };
+        let query_string = combine_query(&url, &request.query);
 
         let is_secure = url.scheme().eq_ignore_ascii_case("https");
 
@@ -197,3 +192,12 @@ fn match_cookies<'a>(jar: &'a CookieJar, domain: &str, path: &str, is_secure: bo
         .map(|o| o.unwrap())
         .collect()
 }
+
+fn combine_query(url: &Url, query: &QString) -> String {
+    match (url.query(), query.len() > 0) {
+        (Some(urlq), true) => format!("?{}&{}", urlq, query),
+        (Some(urlq), false) => format!("?{}", urlq),
+        (None, true) => format!("?{}", query),
+        (None, false) => "".to_string(),
+    }
+}

src/test/query_string.rs

@@ -49,5 +49,5 @@ fn query_in_path_and_req() {
     let vec = resp.to_write_vec();
     let s = String::from_utf8_lossy(&vec);
     println!("{}", s);
-    assert!(s.contains("GET /query_in_path_and_req?foo=barbaz=1%202%203 HTTP/1.1"))
+    assert!(s.contains("GET /query_in_path_and_req?foo=bar&baz=1%202%203 HTTP/1.1"))
 }