fix(grep): fix options sent to fast glob package - issue 27216 (#27231)

* Declare function so we can import

* Fix ignore pattern to match api

* Fix lint

* Only force array if not already an array

Turn grep filtering on for own test

* Add a command to test grep tag @smoke

* adding tests

---------

Co-authored-by: Cacie Prins <cacieprins@users.noreply.github.com>
Co-authored-by: Jordan <jordan@jpdesigning.com>
Co-authored-by: Adam Stone-Lord <adams@cypress.io>
Co-authored-by: Matthew Schile <mschile@cypress.io>

npm/grep/cypress.config.js

@@ -1,10 +1,17 @@
 const { defineConfig } = require('cypress')
+const cypressGrepPlugin = require('./src/plugin')
 
 module.exports = defineConfig({
   e2e: {
     defaultCommandTimeout: 1000,
     setupNodeEvents (on, config) {
-      require('./src/plugin')(config)
+      cypressGrepPlugin(config)
+
+      on('task', {
+        grep (config) {
+          return cypressGrepPlugin(config)
+        },
+      })
 
       return config
     },

npm/grep/cypress/e2e/unit.js

@@ -437,3 +437,36 @@ describe('utils', () => {
     })
   })
 })
+
+describe('plugin', () => {
+  context('excludeSpecPattern', () => {
+    it('supports an array value', () => {
+      cy.task('grep', {
+        excludeSpecPattern: ['**/test2.spec.js', '**/test3.spec.js'],
+        specPattern: '**/*.spec.js',
+        env: {
+          grepTags: 'smoke',
+          grepFilterSpecs: true,
+        },
+      }).then((config) => {
+        expect(config.specPattern.length).to.equal(1)
+        expect(config.specPattern[0]).to.contain('test1.spec.js')
+      })
+    })
+
+    it('supports a string value', () => {
+      cy.task('grep', {
+        excludeSpecPattern: '**/test2.spec.js',
+        specPattern: '**/*.spec.js',
+        env: {
+          grepTags: 'smoke',
+          grepFilterSpecs: true,
+        },
+      }).then((config) => {
+        expect(config.specPattern.length).to.equal(2)
+        expect(config.specPattern[0]).to.contain('test1.spec.js')
+        expect(config.specPattern[1]).to.contain('test3.spec.js')
+      })
+    })
+  })
+})

npm/grep/src/plugin.js

@@ -69,7 +69,7 @@ function cypressGrepPlugin (config) {
     debug('integrationFolder', integrationFolder)
     const specFiles = globby.sync(specPattern, {
       cwd: integrationFolder,
-      ignore: excludeSpecPattern,
+      ignore: Array.isArray(excludeSpecPattern) ? excludeSpecPattern : [excludeSpecPattern],
       absolute: true,
     })