feat: Add after:spec event (#14178)

packages/server/lib/plugins/child/run_plugins.js

@@ -111,6 +111,9 @@ const execute = (ipc, event, ids, args = []) => {
     'after:screenshot' () {
       util.wrapChildPromise(ipc, invoke, ids, args)
     },
+    'after:spec' () {
+      util.wrapChildPromise(ipc, invoke, ids, args)
+    },
     'before:browser:launch' () {
       browserLaunch.wrap(ipc, invoke, ids, args)
     },

packages/server/lib/plugins/child/validate_event.js

@@ -34,8 +34,13 @@ const eventValidators = {
   '_get:task:body': isFunction,
 }
 
+const runEvents = {
+  'after:spec': true,
+  'before:spec': true,
+}
+
 const validateEvent = (event, handler, config) => {
-  if (event === 'before:spec') {
+  if (runEvents[event]) {
     return isValidRunEvent(event, handler, config)
   }
 

packages/server/lib/plugins/run_events.js

@@ -4,7 +4,7 @@ const errors = require('../errors')
 const plugins = require('../plugins')
 
 module.exports = {
-  execute: Promise.method((eventName, config, ...args) => {
+  execute: Promise.method((eventName, config = {}, ...args) => {
     if (!config.experimentalRunEvents) return
 
     if (!plugins.has(eventName)) return