test(e2e): add end to end tests via cypress.io

test/e2e/run-e2e-test.js

@@ -0,0 +1,33 @@
+const http = require('http')
+const { resolve } = require('path')
+
+require('dotenv').config({ path: 'variables.env' })
+
+const cypress = require('cypress')
+const app = require('../../app')
+
+const TEST_PORT = 3007
+
+app.set('port', TEST_PORT)
+
+const server = http.createServer(app)
+
+const { CF_SPACE, CF_ACCESS_TOKEN, CF_PREVIEW_ACCESS_TOKEN } = process.env
+
+server.on('error', console.error)
+server.listen(TEST_PORT, function () {
+  cypress.run({
+    spec: resolve(__dirname, 'specs', 'the-example-app-spec.js'),
+    headed: !process.env.CI,
+    env: {
+      CF_SPACE, CF_ACCESS_TOKEN, CF_PREVIEW_ACCESS_TOKEN
+    }
+  })
+    .then(() => {
+      server.close()
+      process.exit(0)
+    }).catch(() => {
+      server.close()
+      process.exit(1)
+    })
+})