Error while opening file under mocha test

I have implemented a yauzl.open(path, { lazyEntries: true}, (error, zipfile) => {}); that works fine for normal operation.

The failure happens when I try to do the same inside a mocha test, where the file gives an error when trying to open the zip file as shown here:

Error: end of central directory record signature not found
    at /myproject/node_modules/yauzl/index.js:187:14
    at /myproject/node_modules/yauzl/index.js:631:5
    at /myproject/node_modules/fd-slicer/index.js:32:7
    at FSReqWrap.wrapper [as oncomplete] (fs.js:658:17)

After running the test, the zip file is corrupted and if you try to extract it, you get a .zip.cpgz (Im using MacOS Mojave)

Note that is the same file that works when running from the main code. The mocha test use a tdd style. For context, Im using the VScode extension test test runner since I am working on a extension.

If there is anything I can add please let me know.

[brianignacio5]

The issue had nothing to do with yauzl, another test was breaking the file. Sorry for the inconvenience.

[brianignacio5]

Yes, sorry I was not clear. So 'end' event I am referring to is the one from zip file. Will update on first post. In the write stream close event Im doing the same as Cpp tools extension here : https://github.com/Microsoft/vscode-cpptools/blob/master/Extension/src/packageManager.ts#L376