does-this-module-install

npm enables creation of small modules to compose larger systems. One problem that surfaces is that smaller modules have to be tested for deployment.

A common cause of error is when a dependency is listed as a dev-dependency. This causes needless frustration - in ensuring all will work.

This module, provides a unit installation test as a function. The function is independent of test framework. It throws on error when installing it's root-parent module. Root parent is defined as the first subdirectory containing node_modules.

This module, provides a unit installation test, that tests an npm module can be self installed in production mode.

Installation

npm install does-this-module-install -D

or

yarn install doed-this-module-install --save-dev

Usage

runInstallTest is a simple function that detects the current parent-root module, uses it's relative path to install the module into a temp directory.

The function is independent of test framework and returns a success message or throws an error. Use shown below is tied to mocha, should be easy enough to modify as needed.

// somewhere in your tests
import { runInstallTest } from 'does-this-module-install
 
// demonstrated with mocha, but should be adaptable to
// any test framework of your choice
describe(`regular module tests`, () => {
  it(`install test`, async () => {
    expect(await runInstallTest()).to.match(/success! installing .*/);
  });
});

Code of conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

License

Apache-2.0

Support

Bugs, PRs, comments, suggestions welcomed!