Test all modules in npm test; fix axios/got/superagent on 4xx

- npm test: explicitly run core, axios, node-fetch, got, undici, superagent
- Axios: use validateStatus: () => true so proxy header check works when target returns 4xx
- Got: create client with throwHttpErrors: false for same reason
- Superagent: chain .ok(() => true) so response is returned on 4xx

Made-with: Cursor

Author: proxymeshai

package.json

@@ -39,7 +39,7 @@
     "LICENSE"
   ],
   "scripts": {
-    "test": "node test/test_proxy_headers.js",
+    "test": "node test/test_proxy_headers.js core axios node-fetch got undici superagent",
     "test:verbose": "node test/test_proxy_headers.js -v",
     "lint": "eslint lib test",
     "prepublishOnly": "npm test"

test/test_proxy_headers.js

@@ -189,7 +189,9 @@ const AVAILABLE_TESTS = {
                 proxyHeaders: config.proxyHeadersToSend,
             });
 
-            const response = await client.get(config.testUrl);
+            const response = await client.get(config.testUrl, {
+                validateStatus: () => true,
+            });
             const headerValue = checkHeader(response.headers, config.proxyHeader);
 
             if (headerValue) {
@@ -232,6 +234,7 @@ const AVAILABLE_TESTS = {
             const client = await createProxyGot({
                 proxy: config.proxyUrl,
                 proxyHeaders: config.proxyHeadersToSend,
+                gotOptions: { throwHttpErrors: false },
             });
 
             const response = await client(config.testUrl);
@@ -279,7 +282,7 @@ const AVAILABLE_TESTS = {
                 proxyHeaders: config.proxyHeadersToSend,
             });
 
-            const response = await client.get(config.testUrl);
+            const response = await client.get(config.testUrl).ok(() => true);
             const headerValue = checkHeader(response.headers, config.proxyHeader);
 
             if (headerValue) {