feat/add-ping-and-test

package.json

@@ -29,7 +29,8 @@
     "url": "https://github.com/ipfs/js-libp2p-ipfs-nodejs/issues"
   },
   "engines": {
-    "node": ">=4.0.0"
+    "node": ">=4.0.0",
+    "npm": ">=3.0.0"
   },
   "homepage": "https://github.com/ipfs/js-libp2p-ipfs-nodejs#readme",
   "devDependencies": {
@@ -40,7 +41,7 @@
     "pull-stream": "^3.5.0"
   },
   "dependencies": {
-    "libp2p": "^0.3.0",
+    "libp2p": "^0.3.1",
     "libp2p-secio": "^0.6.3",
     "libp2p-spdy": "^0.10.0",
     "libp2p-swarm": "^0.26.3",
@@ -61,4 +62,4 @@
     "Stephen Whitmore <[email protected]>",
     "varunagarwal315 <[email protected]>"
   ]
-}
+}

test/libp2p.spec.js

@@ -405,6 +405,17 @@ describe('libp2p-ipfs-nodejs', () => {
     })
   })
 
+  it('nodeE ping to nodeF', (done) => {
+    nodeE.pingByPeerInfo(nodeF.peerInfo, (err, ping) => {
+      expect(err).to.not.exist
+      ping.once('ping', (time) => {
+        expect(time).to.be.above(1)
+        ping.stop()
+        done()
+      })
+    })
+  })
+
   it('crash that node, make sure nodeA continues going steady', (done) => {
     spawnedNode.kill('SIGKILL')