Travis-ci: npm install on windows

Question

Due to the large unexpected problems with Windows, I have the following requirement in my project:

As a developer I want to be notified every time npm install fails on Windows.

So what is the recommended approach to write this type of "integration" test, assuming I'm using Travis-CI? Can I run npm install on Windows inside Sauce Labs?

I thought on writing a script that does that: (is Selenium the best tool for that?)

• Clone the latest stable build (that passed CI)
• Run npm install on windows
• Start the Node.JS express server locally
• Open the local application on IE 9+, Chrome, Firefox.
• Try to download some assets from the website and make sure they work

This script should fail and exit immediately if any of these step fails.