fix: fix behavior when only using inverted tags (#24413)

* fix behavior when only using inverted tags

* fix: fix behavior when only using inverted tags

* yarn lint --fix ./npm/grep

Co-authored-by: Matt Schile <mschile@cypress.io>
Co-authored-by: Ryan Manuel <ryanm@cypress.io>
Co-authored-by: Blue F <blue@cypress.io>

Author: 4 people

npm/grep/cypress/e2e/unit.js

@@ -153,6 +153,13 @@ describe('utils', () => {
         ],
       ])
     })
+
+    it('allows all tags to be inverted', () => {
+      const parsed = parseTagsGrep('--@tag1,--@tag2')
+      expect(parsed).to.deep.equal([
+        [ { tag: '@tag1', invert: true }, { tag: '@tag2', invert: true } ]
+      ])
+    })
   })
 
   context('parseGrep', () => {

npm/grep/src/utils.js

@@ -86,6 +86,10 @@ function parseTagsGrep (s) {
     ORS_filtered.forEach((OR, index) => {
       ORS_filtered[index] = OR.concat(explicitNotTags)
     })
+
+    if (ORS_filtered.length === 0) {
+      ORS_filtered[ 0 ] = explicitNotTags
+    }
   }
 
   return ORS_filtered