test: reduce string concatenations

PR-URL: https://github.com/nodejs/node/pull/12735
Refs: https://github.com/nodejs/node/pull/12455
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/test/parallel/test-net-connect-options-fd.js b/test/parallel/test-net-connect-options-fd.js
index 9cc581243f..9e3859f843 100644
--- a/test/parallel/test-net-connect-options-fd.js
+++ b/test/parallel/test-net-connect-options-fd.js
@@ -69,13 +69,13 @@ const forAllClients = (cb) => common.mustCall(cb, CLIENT_VARIANTS);
   })
   .on('error', function(err) {
     console.error(err);
-    assert.fail(null, null, '[Pipe server]' + err);
+    assert.fail(null, null, `[Pipe server]${err}`);
   })
   .listen({path: serverPath}, common.mustCall(function serverOnListen() {
     const getSocketOpt = (index) => {
       const handle = new Pipe();
       const err = handle.bind(`${prefix}-client-${socketCounter++}`);
-      assert(err >= 0, '' + err);
+      assert(err >= 0, String(err));
       assert.notStrictEqual(handle.fd, -1);
       handleMap.set(index, handle);
       console.error(`[Pipe]Bound handle with Pipe ${handle.fd}`);
@@ -90,11 +90,11 @@ const forAllClients = (cb) => common.mustCall(cb, CLIENT_VARIANTS);
       assert(handleMap.has(index));
       const oldHandle = handleMap.get(index);
       assert.strictEqual(oldHandle.fd, this._handle.fd);
-      client.write(oldHandle.fd + '');
+      client.write(String(oldHandle.fd));
       console.error(`[Pipe]Sending data through fd ${oldHandle.fd}`);
       client.on('error', function(err) {
         console.error(err);
-        assert.fail(null, null, '[Pipe Client]' + err);
+        assert.fail(null, null, `[Pipe Client]${err}`);
       });
     });