test: rename common.ddCommand()

Change common.ddCommand() to common.createZeroFilledFile().

PR-URL: #23411
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: George Adams <george.adams@uk.ibm.com>

test/common/README.md

@@ -52,7 +52,7 @@ symlinks
 ([SeCreateSymbolicLinkPrivilege](https://msdn.microsoft.com/en-us/library/windows/desktop/bb530716(v=vs.85).aspx)).
 On non-Windows platforms, this always returns `true`.
 
-### ddCommand(filename)
+### createZeroFilledFile(filename)
 
 Creates a 10 MB file of all null characters.
 

test/common/index.js

@@ -173,7 +173,7 @@ function childShouldThrowAndAbort() {
   });
 }
 
-function ddCommand(filename) {
+function createZeroFilledFile(filename) {
   const fd = fs.openSync(filename, 'w');
   fs.ftruncateSync(fd, 10 * 1024 * 1024);
   fs.closeSync(fd);
@@ -696,7 +696,7 @@ module.exports = {
   busyLoop,
   canCreateSymLink,
   childShouldThrowAndAbort,
-  ddCommand,
+  createZeroFilledFile,
   disableCrashOnUnhandledRejection,
   enoughTestCpu,
   enoughTestMem,

test/common/index.mjs

@@ -22,7 +22,7 @@ const {
   PIPE,
   hasIPv6,
   childShouldThrowAndAbort,
-  ddCommand,
+  createZeroFilledFile,
   platformTimeout,
   allowGlobals,
   mustCall,
@@ -71,7 +71,7 @@ export {
   PIPE,
   hasIPv6,
   childShouldThrowAndAbort,
-  ddCommand,
+  createZeroFilledFile,
   platformTimeout,
   allowGlobals,
   mustCall,

test/parallel/test-http-chunk-problem.js

@@ -63,7 +63,7 @@ function executeRequest(cb) {
 
 tmpdir.refresh();
 
-common.ddCommand(filename);
+common.createZeroFilledFile(filename);
 
 server = http.createServer(function(req, res) {
   res.writeHead(200);

test/parallel/test-pipe-file-to-http.js

@@ -56,7 +56,7 @@ const server = http.createServer(function(req, res) {
 server.listen(0);
 
 server.on('listening', function() {
-  common.ddCommand(filename);
+  common.createZeroFilledFile(filename);
   makeRequest();
 });