test: use mustSucceed instead of mustCall with assert.ifError

PR-URL: nodejs/node#43188
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Zeyu "Alex" Yang <himself65@outlook.com>

test/parallel/test-fs-options-immutable.js

@@ -6,19 +6,17 @@ const common = require('../common');
 //
 // Refer: https://github.com/nodejs/node/issues/7655
 
-const assert = require('assert');
 const fs = require('fs');
 const path = require('path');
 
-const errHandler = (e) => assert.ifError(e);
 const options = Object.freeze({});
 const tmpdir = require('../common/tmpdir');
 tmpdir.refresh();
 
-fs.readFile(__filename, options, common.mustCall(errHandler));
+fs.readFile(__filename, options, common.mustSucceed());
 fs.readFileSync(__filename, options);
 
-fs.readdir(__dirname, options, common.mustCall(errHandler));
+fs.readdir(__dirname, options, common.mustSucceed());
 fs.readdirSync(__dirname, options);
 
 if (common.canCreateSymLink()) {
@@ -28,20 +26,20 @@ if (common.canCreateSymLink()) {
   fs.writeFileSync(sourceFile, '');
   fs.symlinkSync(sourceFile, linkFile);
 
-  fs.readlink(linkFile, options, common.mustCall(errHandler));
+  fs.readlink(linkFile, options, common.mustSucceed());
   fs.readlinkSync(linkFile, options);
 }
 
 {
   const fileName = path.resolve(tmpdir.path, 'writeFile');
   fs.writeFileSync(fileName, 'ABCD', options);
-  fs.writeFile(fileName, 'ABCD', options, common.mustCall(errHandler));
+  fs.writeFile(fileName, 'ABCD', options, common.mustSucceed());
 }
 
 {
   const fileName = path.resolve(tmpdir.path, 'appendFile');
   fs.appendFileSync(fileName, 'ABCD', options);
-  fs.appendFile(fileName, 'ABCD', options, common.mustCall(errHandler));
+  fs.appendFile(fileName, 'ABCD', options, common.mustSucceed());
 }
 
 if (!common.isIBMi) { // IBMi does not support fs.watch()
@@ -56,13 +54,13 @@ if (!common.isIBMi) { // IBMi does not support fs.watch()
 
 {
   fs.realpathSync(__filename, options);
-  fs.realpath(__filename, options, common.mustCall(errHandler));
+  fs.realpath(__filename, options, common.mustSucceed());
 }
 
 {
   const tempFileName = path.resolve(tmpdir.path, 'mkdtemp-');
   fs.mkdtempSync(tempFileName, options);
-  fs.mkdtemp(tempFileName, options, common.mustCall(errHandler));
+  fs.mkdtemp(tempFileName, options, common.mustSucceed());
 }
 
 {