feat: Fire run events in interactive mode

cli/schema/cypress.schema.json

@@ -242,6 +242,11 @@
           "default": "bundled",
           "description": "If set to 'system', Cypress will try to find a Node.js executable on your path to use when executing your plugins. Otherwise, Cypress will use the Node version bundled with Cypress."
         },
+        "experimentalInteractiveRunEvents": {
+          "type": "boolean",
+          "default": false,
+          "description": "Allows listening to the `before:run`, `after:run`, `before:spec`, and `after:spec` events in the plugins file during interactive mode."
+        },
         "experimentalSourceRewriting": {
           "type": "boolean",
           "default": false,

cli/types/cypress.d.ts

@@ -2615,8 +2615,12 @@ declare namespace Cypress {
      */
     firefoxGcInterval: Nullable<number | { runMode: Nullable<number>, openMode: Nullable<number> }>
     /**
-     * Enables AST-based JS/HTML rewriting. This may fix issues caused by the existing regex-based JS/HTML replacement
-     * algorithm.
+     * Allows listening to the `before:run`, `after:run`, `before:spec`, and `after:spec` events in the plugins file during interactive mode.
+     * @default false
+     */
+    experimentalInteractiveRunEvents: boolean
+    /**
+     * Generate and save commands directly to your test suite by interacting with your app as an end user would.
      * @default false
      */
     experimentalSourceRewriting: boolean
@@ -5159,22 +5163,22 @@ declare namespace Cypress {
   }
 
   interface BeforeRunDetails {
-    browser: Browser
+    browser?: Browser
     config: ConfigOptions
     cypressVersion: string
     group?: string
-    parallel: boolean
+    parallel?: boolean
     runUrl?: string
-    specs: Spec[]
-    specPattern: string[]
+    specs?: Spec[]
+    specPattern?: string[]
     system: SystemDetails
     tag?: string
   }
 
   interface DevServerOptions {
     specs: Spec[]
-    config: ResolvedConfigOptions & RuntimeConfigOptions,
-    devServerEvents: NodeJS.EventEmitter,
+    config: ResolvedConfigOptions & RuntimeConfigOptions
+    devServerEvents: NodeJS.EventEmitter
   }
 
   interface ResolvedDevServerConfig {

packages/desktop-gui/src/projects/projects-api.js

@@ -102,7 +102,7 @@ const runSpec = (project, spec, browser, specFilter) => {
   .then(launchBrowser)
 }
 
-const closeBrowser = (project, spec) => {
+const onBrowserClose = (project, spec) => {
   if (!spec) {
     specsStore.setChosenSpec(null)
   }
@@ -112,6 +112,10 @@ const closeBrowser = (project, spec) => {
   }
 
   ipc.offLaunchBrowser()
+}
+
+const closeBrowser = (project, spec) => {
+  onBrowserClose(project, spec)
 
   return ipc.closeBrowser()
 }
@@ -127,10 +131,10 @@ const closeProject = (project) => {
   ipc.offOnProjectWarning()
   ipc.offOnConfigChanged()
 
-  return Promise.join(
-    closeBrowser(project),
+  return Promise.all([
+    onBrowserClose(project),
     ipc.closeProject(),
-  )
+  ])
 }
 
 const openProject = (project) => {

packages/server/lib/browsers/index.js

@@ -233,5 +233,4 @@ module.exports = {
       })
     })
   },
-
 }

packages/server/lib/config_options.ts

@@ -79,6 +79,11 @@ export const options = [
     defaultValue: false,
     validation: v.isBoolean,
     isExperimental: true,
+  }, {
+    name: 'experimentalInteractiveRunEvents',
+    defaultValue: false,
+    validation: v.isBoolean,
+    isExperimental: true,
   }, {
     name: 'experimentalSourceRewriting',
     defaultValue: false,

packages/server/lib/experiments.ts

@@ -52,6 +52,7 @@ interface StringValues {
 */
 const _summaries: StringValues = {
   experimentalFetchPolyfill: 'Polyfills `window.fetch` to enable Network spying and stubbing.',
+  experimentalInteractiveRunEvents: 'Allows listening to the `before:run`, `after:run`, `before:spec`, and `after:spec` events in the plugins file during interactive mode.',
   experimentalSourceRewriting: 'Enables AST-based JS/HTML rewriting. This may fix issues caused by the existing regex-based JS/HTML replacement algorithm.',
   experimentalStudio: 'Generate and save commands directly to your test suite by interacting with your app as an end user would.',
 }
@@ -68,6 +69,7 @@ const _summaries: StringValues = {
 */
 const _names: StringValues = {
   experimentalFetchPolyfill: 'Fetch polyfill',
+  experimentalInteractiveRunEvents: 'Interactive Mode Run Events',
   experimentalSourceRewriting: 'Improved source rewriting',
   experimentalStudio: 'Studio',
 }

packages/server/lib/open_project.js

@@ -9,6 +9,7 @@ const { ProjectE2E } = require('./project-e2e')
 const browsers = require('./browsers')
 const specsUtil = require('./util/specs')
 const preprocessor = require('./plugins/preprocessor')
+const runEvents = require('./plugins/run_events')
 
 const moduleFactory = () => {
   let openProject = null
@@ -123,13 +124,24 @@ const moduleFactory = () => {
             })
           }
 
+          const afterSpec = () => {
+            if (!openProject || cfg.isTextTerminal || !cfg.experimentalInteractiveRunEvents) return Promise.resolve()
+
+            return runEvents.execute('after:spec', cfg, spec)
+          }
+
           const { onBrowserClose } = options
 
           options.onBrowserClose = () => {
             if (spec && spec.absolute) {
               preprocessor.removeFile(spec.absolute, cfg)
             }
 
+            afterSpec(cfg, spec)
+            .catch((err) => {
+              openProject.options.onError(err)
+            })
+
             if (onBrowserClose) {
               return onBrowserClose()
             }
@@ -144,7 +156,14 @@ const moduleFactory = () => {
               spec.relative,
             )
 
-            return browsers.open(browser, options, automation)
+            return Promise.try(() => {
+              if (!cfg.isTextTerminal && cfg.experimentalInteractiveRunEvents) {
+                return runEvents.execute('before:spec', cfg, spec)
+              }
+            })
+            .then(() => {
+              return browsers.open(browser, options, automation)
+            })
           }
 
           return relaunchBrowser()
@@ -216,8 +235,7 @@ const moduleFactory = () => {
         return get()
         .then(sendIfChanged)
         .catch(options.onError)
-      },
-      250, { leading: true })
+      }, 250, { leading: true })
 
       const createSpecsWatcher = (cfg) => {
         // TODO I keep repeating this to get the resolved value
@@ -287,10 +305,10 @@ const moduleFactory = () => {
     },
 
     closeOpenProjectAndBrowsers () {
-      return Promise.all([
-        this.closeBrowser(),
-        openProject ? openProject.close() : undefined,
-      ])
+      return this.closeBrowser()
+      .then(() => {
+        return openProject && openProject.close()
+      })
       .then(() => {
         reset()
 
@@ -335,6 +353,9 @@ const moduleFactory = () => {
       return openProject.open({ ...options, testingType: args.testingType })
       .return(this)
     },
+
+    // for testing purposes
+    __reset: reset,
   }
 }
 

packages/server/lib/plugins/index.js

@@ -132,7 +132,7 @@ const init = (config, options) => {
 
             // no argument is passed for cy.task()
             // This is necessary because undefined becomes null when it is sent through ipc.
-            if (args[1] === undefined) {
+            if (registration.event === 'task' && args[1] === undefined) {
               args[1] = {
                 __cypress_task_no_argument__: true,
               }

packages/server/lib/project-base.ts

@@ -8,7 +8,9 @@ import la from 'lazy-ass'
 import _ from 'lodash'
 import path from 'path'
 import R from 'ramda'
+
 import commitInfo from '@cypress/commit-info'
+import pkg from '@packages/root'
 import { RunnablesStore } from '@packages/reporter'
 import { ServerCt } from '@packages/server-ct'
 import api from './api'
@@ -19,9 +21,11 @@ import cwd from './cwd'
 import errors from './errors'
 import logger from './logger'
 import Reporter from './reporter'
+import runEvents from './plugins/run_events'
 import savedState from './saved_state'
 import scaffold from './scaffold'
 import { ServerE2E } from './server-e2e'
+import system from './util/system'
 import user from './user'
 import { ensureProp } from './util/class-helpers'
 import { escapeFilenameInUrl } from './util/escape_filename'
@@ -40,8 +44,6 @@ interface OpenOptions {
   onAfterOpen: (cfg: any) => Bluebird<any>
 }
 
-// type ProjectOptions = Record<string, any>
-
 export type Cfg = Record<string, any>
 
 const localCwd = cwd()
@@ -183,6 +185,20 @@ export class ProjectBase<TServer extends ServerE2E | ServerCt> extends EE {
           this.watchPluginsFile(cfg, options),
         )
       })
+      .then(() => {
+        if (cfg.isTextTerminal || !cfg.experimentalInteractiveRunEvents) return
+
+        return system.info()
+        .then((sys) => {
+          const beforeRunDetails = {
+            config: cfg,
+            cypressVersion: pkg.version,
+            system: _.pick(sys, 'osName', 'osVersion'),
+          }
+
+          return runEvents.execute('before:run', cfg, beforeRunDetails)
+        })
+      })
     })
     .return(this)
   }
@@ -227,6 +243,13 @@ export class ProjectBase<TServer extends ServerE2E | ServerCt> extends EE {
     )
     .then(() => {
       process.chdir(localCwd)
+
+      return this.getConfig()
+    })
+    .then((config) => {
+      if (config.isTextTerminal || !config.experimentalInteractiveRunEvents) return
+
+      return runEvents.execute('after:run', config)
     })
   }
 

packages/server/test/unit/config_spec.js

@@ -1329,6 +1329,7 @@ describe('lib/config', () => {
             env: {},
             execTimeout: { value: 60000, from: 'default' },
             experimentalFetchPolyfill: { value: false, from: 'default' },
+            experimentalInteractiveRunEvents: { value: false, from: 'default' },
             experimentalSourceRewriting: { value: false, from: 'default' },
             experimentalStudio: { value: false, from: 'default' },
             fileServerFolder: { value: '', from: 'default' },
@@ -1411,6 +1412,7 @@ describe('lib/config', () => {
             e2e: { from: 'default', value: {} },
             execTimeout: { value: 60000, from: 'default' },
             experimentalFetchPolyfill: { value: false, from: 'default' },
+            experimentalInteractiveRunEvents: { value: false, from: 'default' },
             experimentalSourceRewriting: { value: false, from: 'default' },
             experimentalStudio: { value: false, from: 'default' },
             env: {