npm-test-helpers

Useful shared test helpers for writing apps that interact with npm.

Registry-Couch-App Integration Testing

It can be useful to test against a fully-functional Registry-Couch-App. npm-test-helpers provides a useful set of helpers for doing this.

setting up your local environment

1. Edit your local.ini to have the settings outlined in https://github.com/npm/npm-registry-couchapp.
2. Create a test-config.json that has appropriate settings for your CouchDB configuration:

{
  "testRegistryName": "npm-test-registry",
  "host": "localhost",
  "port": 5984,
  "scheme": "http",
  "cache": "/tmp",
  "couchUser": "admin",
  "couchPass": "admin",
  "populateDesign": true
}

initializing a testing registry

Couch = require('../lib').Couch;

couch.setup().then(function() {
  // a registry is now available with the
  // design documents populated.
});

tearing down the testing registry

var Couch = require('npm-test-helpers').Couch;

couch.teardown().then(function() {
  // the testing registry has been destroyed.
});

publishing a package

1. make sure that you have an npm user available locally (npm-test-helpers simply executes npm).
2. create a testing registry.
3. for testing purposes, the following packages are available:

• request@1.9.0
• request@2.36.0
• tap@0.3.0
• thumbd@2.7.0
• thumbd@2.8.1

var Couch = require('npm-test-helpers').Couch,
 Registry = require('npm-test-helpers').Registry;

couch.setup().then(function() {
  var registry = new Registry();
  registry.publish('request@2.36.0').then(function(stdout) {
    // the package is now published.
  });
});

unpublish a package

var Couch = require('npm-test-helpers').Couch,
 Registry = require('npm-test-helpers').Registry;

couch.setup().then(function() {
  var registry = new Registry();
  registry.publish('request@2.36.0').then(function(stdout) {
    return registry.unpublish('request');
  }).then(function(stdout) {
    // the package was unpublished.
  });
});

delete a package

var Couch = require('npm-test-helpers').Couch,
 Registry = require('npm-test-helpers').Registry;

couch.setup().then(function() {
  var registry = new Registry();
  registry.publish('request@2.36.0').then(function(stdout) {
    return registry.delete('request');
  }).then(function(stdout) {
    // the package was unpublished.
  });
});

testing a follower feed

We use followers all over the place, for different pieces of npm's architecture, npm-test-helpers makes it easy to perform inegration tests on followers.

listening for a publication event

var Couch = require('npm-test-helpers').Couch,
 Registry = require('npm-test-helpers').Registry;

couch.setup().then(function() {

  var feed = follow({
    db: url + '/' + config.testRegistryName,
    include_docs: true,
    since: 'now'
  }, function(err, change) {
    // change.doc.time.unpublished will be
    // an object.
  });

  feed.on('catchup', function() {
    (new Registry()).unpublish('request@1.9.0').done();
  })
});