const clearRequire = require('clear-require') const glob = require('glob') const test = require('ava') /** * Motivations: * * - Client-side getInitialProps() wont have access to the apollo client for * that page (because it's not shared across page bundles), so wont be able to * reset the state, leaving all the logged in user data there :( * - So, we have to have a shared module. BUT; next's code splitting means the * bundle for each page will include its own copy of the module, _unless it's * inlcuded in every page_. * - https://github.com/zeit/next.js/issues/659#issuecomment-271824223 * - https://github.com/zeit/next.js/issues/1635#issuecomment-292236785 * - Therefore, this test ensures that every page includes that module, and * hence it will be shared across every page, giving us a global store in * Apollo that we can clear, etc */ const apolloFilePath = require.resolve('../lib/initApollo') test.beforeEach(() => { // Clean up the cache clearRequire.all() }) glob.sync('./pages/**/*.js').forEach((file) => { test(`.${file} imports shared apollo module`, (t) => { t.falsy(require.cache[apolloFilePath]) try { require(`.${file}`) } catch (error) { // Don't really care if it fails to execute, etc, just want to be // certain the expected require call was made } t.truthy(require.cache[apolloFilePath]) }) })