http: include provided status code in range error

ServerResponse#writeHead() coerces the user provided status code
to a number and then performs a range check. If the check fails,
a range error is thrown. The coerced status code is included in
the error message. This commit uses the user provided status code
instead.

PR-URL: #11221
Reviewed-By: James M Snell <[email protected]>

Author: cjihrig

lib/_http_server.js

@@ -161,9 +161,11 @@ ServerResponse.prototype._implicitHeader = function _implicitHeader() {
 
 ServerResponse.prototype.writeHead = writeHead;
 function writeHead(statusCode, reason, obj) {
+  var originalStatusCode = statusCode;
+
   statusCode |= 0;
   if (statusCode < 100 || statusCode > 999)
-    throw new RangeError(`Invalid status code: ${statusCode}`);
+    throw new RangeError(`Invalid status code: ${originalStatusCode}`);
 
   if (typeof reason === 'string') {
     // writeHead(statusCode, reasonPhrase[, headers])

test/parallel/test-http-response-statuscode.js

@@ -20,17 +20,17 @@ const server = http.Server(common.mustCall(function(req, res) {
     case 1:
       assert.throws(common.mustCall(() => {
         res.writeHead(Infinity);
-      }), createErrorMessage(0));
+      }), createErrorMessage(Infinity));
       break;
     case 2:
       assert.throws(common.mustCall(() => {
         res.writeHead(NaN);
-      }), createErrorMessage(0));
+      }), createErrorMessage(NaN));
       break;
     case 3:
       assert.throws(common.mustCall(() => {
         res.writeHead({});
-      }), createErrorMessage(0));
+      }), createErrorMessage('\\[object Object\\]'));
       break;
     case 4:
       assert.throws(common.mustCall(() => {
@@ -45,37 +45,37 @@ const server = http.Server(common.mustCall(function(req, res) {
     case 6:
       assert.throws(common.mustCall(() => {
         res.writeHead('1000');
-      }), createErrorMessage(1000));
+      }), createErrorMessage('1000'));
       break;
     case 7:
       assert.throws(common.mustCall(() => {
         res.writeHead(null);
-      }), createErrorMessage(0));
+      }), createErrorMessage(null));
       break;
     case 8:
       assert.throws(common.mustCall(() => {
         res.writeHead(true);
-      }), createErrorMessage(1));
+      }), createErrorMessage(true));
       break;
     case 9:
       assert.throws(common.mustCall(() => {
         res.writeHead([]);
-      }), createErrorMessage(0));
+      }), createErrorMessage([]));
       break;
     case 10:
       assert.throws(common.mustCall(() => {
         res.writeHead('this is not valid');
-      }), createErrorMessage(0));
+      }), createErrorMessage('this is not valid'));
       break;
     case 11:
       assert.throws(common.mustCall(() => {
         res.writeHead('404 this is not valid either');
-      }), createErrorMessage(0));
+      }), createErrorMessage('404 this is not valid either'));
       break;
     case 12:
       assert.throws(common.mustCall(() => {
         res.writeHead();
-      }), createErrorMessage(0));
+      }), createErrorMessage(undefined));
       this.close();
       break;
     default: