still problems working with files [obsolete]

Good morning!

I still have my problems working with StorageFiles.

When I try

const Storage = require('Storage');
  function compareFileWith (expectedContent) {
    let readText = Storage.open('4testing','r').read();
    if (readText != expectedContent) {
      print('>>>> file does not look as expected');
      print('>>>> expected "' + expectedContent + '"');
      print('>>>> got "' + readText + '"');
    }
  }

/**** create file ****/

  let TestFile = Storage.open('4testing','w');

  if (TestFile.write('4testing','Hello, World!')) {
    print('file "4testing" was successfully created');
  } else {
    print('file "4testing" could not be created');
  }
  compareFileWith('Hello, World!');
print('finished');

I only get the following output

file "4testing" could not be created
>>>> file does not look as expected
>>>> expected "Hello, World!"
>>>> got "undefined"
finished

Thus, how can I create a new file if I must not mix Storage methods with StorageFile ones?