Test blocking Client path in integration tests

Make the `CLIENT` static unconditional and add a `#[cfg(not(feature =
"async"))]` block that exercises the blocking `Client::send()` path,
ensuring the connection-pooling client is tested regardless of feature
configuration.

Co-Authored-By: HAL 9000

Author: tnull

bitreq/tests/setup.rs

@@ -201,7 +201,6 @@ pub fn setup() {
 
 pub fn url(req: &str) -> String { format!("http://localhost:35562{}", req) }
 
-#[cfg(feature = "async")]
 static CLIENT: std::sync::OnceLock<bitreq::Client> = std::sync::OnceLock::new();
 #[cfg(feature = "async")]
 static RUNTIME: std::sync::OnceLock<tokio::runtime::Runtime> = std::sync::OnceLock::new();
@@ -224,6 +223,26 @@ pub async fn maybe_make_request(
         (res, lazy_res) => panic!("{res:?} != {}", lazy_res.is_err()),
     }
 
+    // Test blocking Client path
+    #[cfg(not(feature = "async"))]
+    {
+        let client = CLIENT.get_or_init(|| bitreq::Client::new(100));
+        let client_response = client.send(request.clone());
+        match (&response, client_response) {
+            (Ok(resp), Ok(client_resp)) => {
+                assert_eq!(client_resp.status_code, resp.status_code);
+                assert_eq!(client_resp.reason_phrase, resp.reason_phrase);
+                assert_eq!(client_resp.as_bytes(), resp.as_bytes());
+            }
+            (Err(e), Err(client_e)) => {
+                assert_eq!(format!("{e:?}"), format!("{client_e:?}"));
+            }
+            (res, client_res) => {
+                panic!("{res:?} != {client_res:?}");
+            }
+        }
+    }
+
     #[cfg(feature = "async")]
     {
         if let Ok(resp) = &response {