chore: add discovery example tests (#841)

examples/discovery-mechanisms/test-1.js

@@ -0,0 +1,42 @@
+'use strict'
+
+const path = require('path')
+const execa = require('execa')
+const pWaitFor = require('p-wait-for')
+const uint8ArrayToString = require('uint8arrays/to-string')
+const bootstrapers = require('./bootstrapers')
+
+const discoveredCopy = 'Discovered:'
+const connectedCopy = 'Connection established to:'
+
+async function test () {
+  const discoveredNodes = []
+  const connectedNodes = []
+
+  process.stdout.write('1.js\n')
+
+  const proc = execa('node', [path.join(__dirname, '1.js')], {
+    cwd: path.resolve(__dirname),
+    all: true
+  })
+
+  proc.all.on('data', async (data) => {
+    process.stdout.write(data)
+    const line = uint8ArrayToString(data)
+
+    // Discovered or Connected
+    if (line.includes(discoveredCopy)) {
+      const id = line.trim().split(discoveredCopy)[1]
+      discoveredNodes.push(id)
+    } else if (line.includes(connectedCopy)) {
+      const id = line.trim().split(connectedCopy)[1]
+      connectedNodes.push(id)
+    }
+  })
+
+  await pWaitFor(() => discoveredNodes.length === bootstrapers.length && connectedNodes.length === bootstrapers.length)
+
+  proc.kill()
+}
+
+module.exports = test