vue2/test/unit/modules/compiler/compiler-options.spec.ts

import Vue from 'vue'
import { compile } from 'web/compiler'
import { getAndRemoveAttr } from 'compiler/helpers'

describe('compile options', () => {
  it('should be compiled', () => {
    const { render, staticRenderFns, errors } = compile(
      `
      <div>
        <input type="text" v-model="msg" required max="8" v-validate:field1.group1.group2>
      </div>
    `,
      {
        directives: {
          validate(el, dir) {
            if (dir.name === 'validate' && dir.arg) {
              el.validate = {
                field: dir.arg,
                groups: dir.modifiers ? Object.keys(dir.modifiers) : []
              }
            }
          }
        },
        modules: [
          {
            transformNode(el) {
              el.validators = el.validators || []
              const validators = [
                'required',
                'min',
                'max',
                'pattern',
                'maxlength',
                'minlength'
              ]
              validators.forEach(name => {
                const rule = getAndRemoveAttr(el, name)
                if (rule !== undefined) {
                  el.validators.push({ name, rule })
                }
              })
            },
            genData(el) {
              let data = ''
              if (el.validate) {
                data += `validate:${JSON.stringify(el.validate)},`
              }
              if (el.validators) {
                data += `validators:${JSON.stringify(el.validators)},`
              }
              return data
            },
            transformCode(el, code) {
              // check
              if (!el.validate || !el.validators) {
                return code
              }
              // setup validation result props
              const result = { dirty: false } // define something other prop
              el.validators.forEach(validator => {
                result[validator.name] = null
              })
              // generate code
              return `_c('validate',{props:{
              field:${JSON.stringify(el.validate.field)},
              groups:${JSON.stringify(el.validate.groups)},
              validators:${JSON.stringify(el.validators)},
              result:${JSON.stringify(result)},
              child:${code}}
            })`
            }
          }
        ]
      }
    )
    expect(render).not.toBeUndefined()
    expect(staticRenderFns).toEqual([])
    expect(errors).toEqual([])

    const renderFn = new Function(render)
    const vm = new Vue({
      data: {
        msg: 'hello'
      },
      components: {
        validate: {
          props: ['field', 'groups', 'validators', 'result', 'child'],
          render(h) {
            return this.child
          },
          computed: {
            valid() {
              let ret = true
              for (let i = 0; i < this.validators.length; i++) {
                const { name } = this.validators[i]
                if (!this.result[name]) {
                  ret = false
                  break
                }
              }
              return ret
            }
          },
          mounted() {
            // initialize validation
            const value = this.$el.value
            this.validators.forEach(validator => {
              const ret = this[validator.name](value, validator.rule)
              this.result[validator.name] = ret
            })
          },
          methods: {
            // something validators logic
            required(val) {
              return val.length > 0
            },
            max(val, rule) {
              return !(parseInt(val, 10) > parseInt(rule, 10))
            }
          }
        }
      },
      render: renderFn,
      staticRenderFns
    }).$mount()
    expect(vm.$el.innerHTML).toBe('<input type="text">')
    expect(vm.$children[0].valid).toBe(true)
  })

  it('should collect errors', () => {
    let compiled = compile('hello')
    expect(compiled.errors.length).toBe(1)
    expect(compiled.errors[0]).toContain('root element')

    compiled = compile('<div v-if="a----">{{ b++++ }}</div>')
    expect(compiled.errors.length).toBe(2)
    expect(compiled.errors[0]).toContain('Raw expression: v-if="a----"')
    expect(compiled.errors[1]).toContain('Raw expression: {{ b++++ }}')
  })

  it('should collect errors with source range', () => {
    let compiled = compile('hello', { outputSourceRange: true })
    expect(compiled.errors.length).toBe(1)
    expect(compiled.errors[0].start).toBe(0)
    expect(compiled.errors[0].end).toBeUndefined()

    compiled = compile('<div v-if="a----">{{ b++++ }}</div>', {
      outputSourceRange: true
    })
    expect(compiled.errors.length).toBe(2)
    expect(compiled.errors[0].start).toBe(5)
    expect(compiled.errors[0].end).toBe(17)
    expect(compiled.errors[1].start).toBe(18)
    expect(compiled.errors[1].end).toBe(29)

    compiled = compile('<div><span></div>', { outputSourceRange: true })
    expect(compiled.errors.length).toBe(1)
    expect(compiled.errors[0].start).toBe(5)
    expect(compiled.errors[0].end).toBe(11)
  })

  it('should collect source range for binding keys', () => {
    const compiled = compile('<div><slot v-bind:key="key" /></div>', {
      outputSourceRange: true
    })
    expect(compiled.errors.length).toBe(1)
    expect(compiled.errors[0].start).toBe(11)
    expect(compiled.errors[0].end).toBe(27)
  })
})