Is there any static code tester available for Angular.js?
For Ruby, I have
Rubocop. Similar to this, is there any command line tool available to test the best practices for angularjs coding?
I would look into Angular JS Linter, it should be what you're looking for. It's basically a set of ESLint rules to lint source code that uses the angular framework. Note that this software is still in development. It's licensed under the MIT License
To install, simply type this is a command line to do so,
$ npm install angular-lint
$ N/A bower install angular-lint