upgrade to @pm2/io 2.4.x + add test to verify auto restart of throwing application

package.json

@@ -159,7 +159,7 @@
   },
   "dependencies": {
     "@pm2/agent": "^0.5.11",
-    "@pm2/io": "~2.3.11",
+    "@pm2/io": "~2.4.2",
     "@pm2/js-api": "^0.5.15",
     "async": "^2.6.1",
     "blessed": "^0.1.81",

test/programmatic/auto_restart.mocha.js

@@ -0,0 +1,49 @@
+
+const pm2 = require('../..');
+const should = require('should');
+const path = require('path')
+
+describe('PM2 auto restart on uncaughtexception', function() {
+  var test_path = path.join(__dirname, 'fixtures', 'auto-restart')
+
+  after((done) => {
+    pm2.delete('all', () => { done() })
+  })
+
+  before((done) => {
+    pm2.uninstall('all', () => {
+      pm2.delete('all', () => { done() })
+    })
+  })
+
+  it('should start a failing app in fork mode', function(done) {
+    pm2.start({
+      script: path.join(test_path, 'throw.js'),
+    }, (err, apps) => {
+      setTimeout(function() {
+        pm2.list((err, list) => {
+          should(list[0].pm2_env.restart_time).aboveOrEqual(0)
+          pm2.delete('throw', () => {
+            done()
+          })
+        })
+      }, 200)
+    })
+  })
+
+  it('should start a failing app in cluster mode', function(done) {
+    pm2.start({
+      script: path.join(test_path, 'throw.js'),
+      instances: 4
+    }, (err, apps) => {
+      setTimeout(function() {
+        pm2.list((err, list) => {
+          should(list[0].pm2_env.restart_time).aboveOrEqual(0)
+          pm2.delete('throw', () => {
+            done()
+          })
+        })
+      }, 200)
+    })
+  })
+})

test/programmatic/fixtures/auto-restart/throw.js

@@ -0,0 +1 @@
+throw new Error('err')

test/unit.sh

@@ -48,6 +48,8 @@ spec "API tests"
 mocha --exit --opts ./mocha.opts  ./reload-locker.mocha.js
 spec "Reload locker tests"
 
+mocha --exit --opts ./mocha.opts  ./auto_restart.mocha.js
+spec "Auto restart feature when uncaughtException"
 mocha --exit --opts ./mocha.opts  ./version.mocha.js
 spec "Package json version retriever"
 mocha --exit --opts ./mocha.opts  ./exp_backoff_restart_delay.mocha.js