valid-v-for.js

/**
 * @author Toru Nagashima
 * @copyright 2017 Toru Nagashima. All rights reserved.
 * See LICENSE file in root directory for full license.
 */
'use strict'

// ------------------------------------------------------------------------------
// Requirements
// ------------------------------------------------------------------------------

const RuleTester = require('eslint').RuleTester
const rule = require('../../../lib/rules/valid-v-for')

// ------------------------------------------------------------------------------
// Tests
// ------------------------------------------------------------------------------

const tester = new RuleTester({
  parser: 'vue-eslint-parser',
  parserOptions: { ecmaVersion: 2015 }
})

tester.run('valid-v-for', rule, {
  valid: [
    {
      filename: 'test.vue',
      code: ''
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="x in list"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="x of list"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(x, i, k) in list"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(x, i, k) of list"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="({id, name}, i, k) of list"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="([id, name], i, k) of list"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><your-component v-for="x in list" :key="x.id"></your-component></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div is="your-component" v-for="x in list" :key="x.id"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><div :is="your-component" v-for="x in list" :key="x.id"></div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="x in list"><custom-component :key="x"></custom-component></template></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="x in list"><div :key="x"></div></template></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="x in list"><div></div></template></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template v-for="x of list"><slot name="item" /></template>'
    },
    {
      filename: 'test.vue',
      code: '<template v-for="x of list">foo<div></div></template>'
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="x of list"><div v-for="foo of x" :key="foo"></div></template></div></template>'
    },
    {
      filename: 'test.vue',
      code: `
        <template v-for="x in xs">
          <template v-for="y in x.ys">
            <li v-for="z in y.zs" :key="z.id">
              123
            </li>
          </template>
        </template>`
    },
    {
      filename: 'test.vue',
      code: `
        <template v-for="x in xs">
          <template v-for="y in ys">
            <li v-for="z in zs" :key="x.id + y.id + z.id">
              123
            </li>
          </template>
        </template>`
    }
  ],
  invalid: [
    {
      filename: 'test.vue',
      code: '<template><div><div v-for:aaa="x in list"></div></div></template>',
      errors: ["'v-for' directives require no argument."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for.aaa="x in list"></div></div></template>',
      errors: ["'v-for' directives require no modifier."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for></div></div></template>',
      errors: ["'v-for' directives require that attribute value."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(,a,b) in list"></div></div></template>',
      errors: ["Invalid alias ''."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(a,,b) in list"></div></div></template>',
      errors: ["Invalid alias ''."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(a,b,,) in list"></div></div></template>',
      errors: ["Invalid alias ''."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(a,{b,c}) in list"></div></div></template>',
      errors: ["Invalid alias '{b,c}'."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(a,b,{c,d}) in list"></div></div></template>',
      errors: ["Invalid alias '{c,d}'."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><your-component v-for="x in list"></your-component></div></template>',
      errors: ["Custom elements in iteration require 'v-bind:key' directives."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div is="your-component" v-for="x in list"></div></div></template>',
      errors: ["Custom elements in iteration require 'v-bind:key' directives."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div :is="your-component" v-for="x in list"></div></div></template>',
      errors: ["Custom elements in iteration require 'v-bind:key' directives."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-bind:is="your-component" v-for="x in list"></div></div></template>',
      errors: ["Custom elements in iteration require 'v-bind:key' directives."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="x in list" :key="100"></div></div></template>',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><custom-component v-for="x in list" :key="100"></custom-component></div></template>',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="x in list" :key="foo"></div></div></template>',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><custom-component v-for="x in list" :key="foo"></custom-component></div></template>',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><div v-for="(item, index) in suggestions" :key></div></div></template>',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="x in list" :key="x"><custom-component></custom-component></template></div></template>',
      errors: ["Custom elements in iteration require 'v-bind:key' directives."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="xin list"><div></div></template></div></template>',
      errors: ["'v-for' directives require that attribute value."]
    },
    {
      filename: 'test.vue',
      code: '<template><div><template v-for="x of list"><div v-for="foo of y" :key="foo"></div></template></div></template>',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."]
    },
    {
      filename: 'test.vue',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."],
      code: `
        <template v-for="x in xs">
          <template v-for="y in a.ys">
            <li v-for="z in y.zs" :key="z.id">
              123
            </li>
          </template>
        </template>`
    },
    {
      filename: 'test.vue',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."],
      code: `
        <template v-for="x in xs">
          <template v-for="y in x.ys">
            <li v-for="z in a.zs" :key="z.id">
              123
            </li>
          </template>
        </template>`
    },
    {
      filename: 'test.vue',
      errors: ["Expected 'v-bind:key' directive to use the variables which are defined by the 'v-for' directive."],
      code: `
        <template v-for="x in xs">
          <template v-for="y in x.ys">
            <li v-for="z in x.zs" :key="z.id">
              123
            </li>
          </template>
        </template>`
    }

  ]
})