test: fix eslint related tests

packages/@vue/cli-plugin-eslint/__tests__/eslintGenerator.spec.js

@@ -9,6 +9,7 @@ test('base', async () => {
 
   expect(pkg.scripts.lint).toBeTruthy()
   expect(pkg.eslintConfig).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', 'eslint:recommended']
   })
 })
@@ -24,6 +25,7 @@ test('airbnb', async () => {
 
   expect(pkg.scripts.lint).toBeTruthy()
   expect(pkg.eslintConfig).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', '@vue/airbnb']
   })
   expect(pkg.devDependencies).toHaveProperty('@vue/eslint-config-airbnb')
@@ -40,6 +42,7 @@ test('standard', async () => {
 
   expect(pkg.scripts.lint).toBeTruthy()
   expect(pkg.eslintConfig).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', '@vue/standard']
   })
   expect(pkg.devDependencies).toHaveProperty('@vue/eslint-config-standard')
@@ -56,6 +59,7 @@ test('prettier', async () => {
 
   expect(pkg.scripts.lint).toBeTruthy()
   expect(pkg.eslintConfig).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', '@vue/prettier']
   })
   expect(pkg.devDependencies).toHaveProperty('@vue/eslint-config-prettier')
@@ -79,6 +83,7 @@ test('typescript', async () => {
 
   expect(pkg.scripts.lint).toBeTruthy()
   expect(pkg.eslintConfig).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', '@vue/prettier', '@vue/typescript']
   })
   expect(pkg.devDependencies).toHaveProperty('@vue/eslint-config-prettier')

packages/@vue/cli/__tests__/invoke.spec.js

@@ -28,6 +28,7 @@ async function assertUpdates (project) {
 
   const eslintrc = JSON.parse(await project.read('.eslintrc'))
   expect(eslintrc).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', '@vue/airbnb']
   })
 
@@ -79,6 +80,7 @@ test('invoke with existing files', async () => {
 
   const eslintrc = JSON.parse(await project.read('.eslintrc'))
   expect(eslintrc).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', 'eslint:recommended']
   })
 
@@ -104,11 +106,13 @@ test('invoke with existing files (yaml)', async () => {
 
   const eslintrc = JSON.parse(await project.read('.eslintrc'))
   expect(eslintrc).toEqual({
+    root: true,
     extends: ['plugin:vue/essential', 'eslint:recommended']
   })
 
   await project.rm(`.eslintrc`)
   await project.write(`.eslintrc.yml`, `
+root: true
 extends:
   - 'plugin:vue/essential'
   - 'eslint:recommended'
@@ -118,6 +122,7 @@ extends:
 
   const updated = await project.read('.eslintrc.yml')
   expect(updated).toMatch(`
+root: true
 extends:
   - 'plugin:vue/essential'
   - '@vue/airbnb'