NODE-2146 - add tap test for agent restarts

test/integration/agent/agent-restart-listener.tap.js

@@ -0,0 +1,51 @@
+'use strict'
+
+const tap = require('tap')
+const configurator = require('../../../lib/config')
+const Agent = require('../../../lib/agent')
+
+
+tap.test('Collector API should connect to staging-collector.newrelic.com', (t) => {
+  const config = configurator.initialize({
+    app_name: 'node.js Tests',
+    license_key: 'd67afc830dab717fd163bfcb0b8b88423e9a1a3b',
+    host: 'staging-collector.newrelic.com',
+    port: 443,
+    ssl: true,
+    utilization: {
+      detect_aws: true,
+      detect_pcf: true,
+      detect_gcp: true,
+      detect_docker: true
+    },
+    logging: {
+      level: 'trace'
+    }
+  })
+  const agent = new Agent(config)
+
+  agent.start((error, returned) => {
+    console.log('Listeners:')
+    console.log('started: ', agent.listenerCount('started'))
+    console.log('stopped: ', agent.listenerCount('stopped'))
+    console.log('disconnected: ', agent.listenerCount('disconnected'))
+    t.notOk(error, 'connected without error')
+    t.ok(returned, 'got boot configuration')
+    t.ok(returned.agent_run_id, 'got run ID')
+
+    const initialStoppedListeners = agent.listenerCount('stopped')
+
+    agent.collector.restart(() => {
+      const currentStoppedListeners = agent.listenerCount('stopped')
+      t.equal(
+        currentStoppedListeners, 
+        initialStoppedListeners, 
+        'should not have extra listeners'
+      )
+
+      agent.stop(() => {
+        t.end()
+      })
+    })
+  })
+})