util: improve error message of _errnoException

The usage of ERR_INVALID_ARG_TYPE in _errnoException is a little inappropriate. This change is to improve it. PR-URL: #17626 Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Evan Lucas <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Joyee Cheung <[email protected]> Reviewed-By: James M Snell <[email protected]>
nodejs · Dec 29, 2017 · c64ca56 · c64ca56
1 parent f94eec0
commit c64ca56
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Showing 2 changed files with 21 additions and 5 deletions.
diff --git a/lib/util.js b/lib/util.js
@@ -1056,9 +1056,12 @@ function error(...args) {
 }
 
 function _errnoException(err, syscall, original) {
-  if (typeof err !== 'number' || err >= 0 || !Number.isSafeInteger(err)) {
-    throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'err',
-                               'negative number');
+  if (typeof err !== 'number') {
+    throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'err', 'number', err);
+  }
+  if (err >= 0 || !Number.isSafeInteger(err)) {
+    throw new errors.RangeError('ERR_OUT_OF_RANGE', 'err',
+                                'a negative integer', err);
   }
   const name = errname(err);
   var message = `${syscall} ${name}`;

diff --git a/test/parallel/test-uv-errno.js b/test/parallel/test-uv-errno.js
@@ -20,12 +20,25 @@ keys.forEach((key) => {
   });
 });
 
-[0, 1, 'test', {}, [], Infinity, -Infinity, NaN].forEach((key) => {
+['test', {}, []].forEach((key) => {
   common.expectsError(
     () => util._errnoException(key),
     {
       code: 'ERR_INVALID_ARG_TYPE',
       type: TypeError,
-      message: 'The "err" argument must be of type negative number'
+      message: 'The "err" argument must be of type number. ' +
+               `Received type ${typeof key}`
+    });
+});
+
+[0, 1, Infinity, -Infinity, NaN].forEach((key) => {
+  common.expectsError(
+    () => util._errnoException(key),
+    {
+      code: 'ERR_OUT_OF_RANGE',
+      type: RangeError,
+      message: 'The value of "err" is out of range. ' +
+               'It must be a negative integer. ' +
+               `Received ${key}`
     });
 });