node/deps/npm/test/packages/npm-test-optional-deps/test.js

var fs = require("fs")
var assert = require("assert")
var path = require("path")

// sax should be the only dep that ends up installed

var dir = path.resolve(__dirname, "node_modules")
assert.deepEqual(fs.readdirSync(dir), ["sax"])
assert.equal(require("sax/package.json").version, "0.3.5")