fix: e2e runner args passing

close #1393

Author: yyx990803

packages/@vue/cli-plugin-e2e-cypress/README.md

@@ -25,7 +25,10 @@ Cypress offers a rich interactive interface for running E2E tests, but currently
   -s, --spec (headless only) runs a specific spec file. defaults to "all"
   ```
 
-  Additionally, [all Cypress CLI options for `cypress run` are also supported](https://docs.cypress.io/guides/guides/command-line.html#cypress-run).
+  Additionally:
+
+  - In GUI mode, [all Cypress CLI options for `cypress open` are also supported](https://docs.cypress.io/guides/guides/command-line.html#cypress-open);
+  - In `--headless` mode, [all Cypress CLI options for `cypress run` are also supported](https://docs.cypress.io/guides/guides/command-line.html#cypress-run).
 
 ## Configuration
 

packages/@vue/cli-plugin-e2e-cypress/index.js

@@ -14,7 +14,7 @@ module.exports = (api, options) => {
       `All Cypress CLI options are also supported:\n` +
       chalk.yellow(`https://docs.cypress.io/guides/guides/command-line.html#cypress-run`)
   }, async (args, rawArgs) => {
-    removeArg(rawArgs, 'headless')
+    removeArg(rawArgs, 'headless', 0)
     removeArg(rawArgs, 'mode')
     removeArg(rawArgs, 'url')
 
@@ -58,11 +58,11 @@ module.exports.defaultModes = {
   'test:e2e': 'production'
 }
 
-function removeArg (rawArgs, arg) {
+function removeArg (rawArgs, arg, offset = 1) {
   const matchRE = new RegExp(`^--${arg}`)
   const equalRE = new RegExp(`^--${arg}=`)
   const i = rawArgs.findIndex(arg => matchRE.test(arg))
   if (i > -1) {
-    rawArgs.splice(i, equalRE.test(rawArgs[i]) ? 1 : 2)
+    rawArgs.splice(i, offset + (equalRE.test(rawArgs[i]) ? 0 : 1))
   }
 }

packages/@vue/cli-plugin-e2e-nightwatch/index.js

@@ -1,12 +1,3 @@
-function removeArg (rawArgs, arg) {
-  const matchRE = new RegExp(`^--${arg}`)
-  const equalRE = new RegExp(`^--${arg}=`)
-  const i = rawArgs.findIndex(arg => matchRE.test(arg))
-  if (i > -1) {
-    rawArgs.splice(i, equalRE.test(rawArgs[i]) ? 1 : 2)
-  }
-}
-
 module.exports = (api, options) => {
   api.registerCommand('test:e2e', {
     description: 'run e2e tests with nightwatch',
@@ -79,3 +70,12 @@ module.exports = (api, options) => {
 module.exports.defaultModes = {
   'test:e2e': 'production'
 }
+
+function removeArg (rawArgs, arg, offset = 1) {
+  const matchRE = new RegExp(`^--${arg}`)
+  const equalRE = new RegExp(`^--${arg}=`)
+  const i = rawArgs.findIndex(arg => matchRE.test(arg))
+  if (i > -1) {
+    rawArgs.splice(i, offset + (equalRE.test(rawArgs[i]) ? 0 : 1))
+  }
+}