Handle toString; add tests for other builtins

This changes current support for __proto__ in key paths.

See: #1706

src/index.js

@@ -165,8 +165,7 @@ export default class VueI18n {
  if (!message || !key) { return false }
  if (!isNull(this._path.getPathValue(message, key))) { return true }
  // fallback for flat key
- if (message[key]) { return true }
- return false
+ return Object.prototype.hasOwnProperty.call(message, key)
  }
 
  if (this._warnHtmlInMessage === 'warn' || this._warnHtmlInMessage === 'error') {

src/path.js

@@ -288,6 +288,9 @@ export default class I18nPath {
  let last: any = obj
  let i: number = 0
  while (i < length) {
+ if (!Object.prototype.hasOwnProperty.call(last, paths[i])) {
+ return null
+ }
  const value: any = last[paths[i]]
  if (value === undefined || value === null) {
  return null

test/unit/basic.test.js

@@ -660,6 +660,89 @@ describe('basic', () => {
  assert(vm.$te('message.hello', 'xx') === false)
  })
  })
+
+ describe('builtin property handling', () => {
+ [
+ // '__proto__', // TODO: see https://github.com/kazupon/vue-i18n/issues/1706
+ 'constructor',
+ 'hasOwnProperty',
+ 'isPrototypeOf',
+ 'propertyIsEnumerable',
+ 'toLocaleString',
+ 'toString',
+ 'valueOf'
+ ].forEach(k => {
+ describe('top-level props', () => {
+ describe('existing key', () => {
+ let vm;
+ beforeEach(() => {
+ const i18n = new VueI18n({
+ locale: 'en',
+ fallbackLocale: 'en',
+ messages: {
+ en: {
+ [k]: 'i exist'
+ },
+ ja: {
+ [k]: 'i exist (ja)'
+ },
+ },
+ modifiers: {
+ custom: str => str.replace(/[aeiou]/g, 'x')
+ }
+ })
+ vm = new Vue({ i18n })
+ })
+
+ it('should return true', () => {
+ assert(vm.$te(k) === true)
+ })
+
+ it('should return true with locale', () => {
+ assert(vm.$te(k, 'ja') === true)
+ })
+ })
+
+ describe('not existing key', () => {
+ it('should return false', () => {
+ const vm = new Vue({ i18n })
+ assert(vm.$te(k) === false)
+ })
+
+ it('should return false with locale', () => {
+ const vm = new Vue({ i18n })
+ assert(vm.$te(k, 'ja') === false)
+ })
+ })
+ })
+
+ describe('deep props', () => {
+ describe('existing key', () => {
+ it('should return true', () => {
+ const vm = new Vue({ i18n })
+ assert(vm.$te(`issues.builtins.existing.${k}`) === true)
+ })
+
+ it('should return true with locale', () => {
+ const vm = new Vue({ i18n })
+ assert(vm.$te(`issues.builtins.existing.${k}`, 'ja') === true)
+ })
+ })
+
+ describe('not existing key', () => {
+ it('should return false', () => {
+ const vm = new Vue({ i18n })
+ assert(vm.$te(`issues.builtins.missing.${k}`) === false)
+ })
+
+ it('should return false with locale', () => {
+ const vm = new Vue({ i18n })
+ assert(vm.$te(`issues.builtins.missing.${k}`, 'ja') === false)
+ })
+ })
+ })
+ })
+ })
  })
 
  describe('i18n#locale', () => {

test/unit/fixture/index.js

@@ -1,4 +1,4 @@
-export default {
+module.exports = {
  en: {
  message: {
  hello: 'the world',
@@ -70,7 +70,20 @@ export default {
  ]
  ],
  issues: {
- arrayBugs: ['bug1', 'bug2']
+ arrayBugs: ['bug1', 'bug2'],
+ builtins: {
+ existing: {
+ // '__proto__': 'i exist', // TODO
+ 'constructor': 'i exist',
+ 'hasOwnProperty': 'i exist',
+ 'isPrototypeOf': 'i exist',
+ 'propertyIsEnumerable': 'i exist',
+ 'toLocaleString': 'i exist',
+ 'toString': 'i exist',
+ 'valueOf': 'i exist'
+ },
+ missing: {}
+ }
  },
  'foo.bar.buz': 'hello flat key!'
  },
@@ -111,7 +124,20 @@ export default {
  ]
  ],
  issues: {
- arrayBugs: ['バグ1', 'バグ2']
+ arrayBugs: ['バグ1', 'バグ2'],
+ builtins: {
+ existing: {
+ // '__proto__': 'i exist (ja)', // TODO
+ 'constructor': 'i exist (ja)',
+ 'hasOwnProperty': 'i exist (ja)',
+ 'isPrototypeOf': 'i exist (ja)',
+ 'propertyIsEnumerable': 'i exist (ja)',
+ 'toLocaleString': 'i exist (ja)',
+ 'toString': 'i exist (ja)',
+ 'valueOf': 'i exist (ja)'
+ },
+ missing: {}
+ }
  },
  'foo.bar.buz': 'こんにちは、フラットなキーさん！'
  }