chore: pnet example test (#845)

.github/workflows/main.yml

@@ -100,3 +100,10 @@ jobs:
       - uses: actions/checkout@v2
       - run: yarn
       - run: cd examples && yarn && npm run test -- discovery-mechanisms
+  test-pnet-example:
+    needs: check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: yarn
+      - run: cd examples && yarn && npm run test -- pnet

examples/pnet/test.js

@@ -0,0 +1,30 @@
+'use strict'
+
+const path = require('path')
+const execa = require('execa')
+const pDefer = require('p-defer')
+const uint8ArrayToString = require('uint8arrays/to-string')
+
+async function test () {
+  const messageReceived = pDefer()
+  process.stdout.write('index.js\n')
+
+  const proc = execa('node', [path.join(__dirname, 'index.js')], {
+    cwd: path.resolve(__dirname),
+    all: true
+  })
+
+  proc.all.on('data', async (data) => {
+    process.stdout.write(data)
+
+    const s = uint8ArrayToString(data)
+    if (s.includes('This message is sent on a private network')) {
+      messageReceived.resolve()
+    }
+  })
+
+  await messageReceived.promise
+  proc.kill()
+}
+
+module.exports = test