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Validating v-Model Transformations in uni-app Kuaishou Platform

This test suite validates v-model functionality in the uni-app Kuaishou mini-program platform implementation. It focuses on data binding and event handling for components and form elements, ensuring proper transformation of Vue’s v-model directives to Kuaishou’s native syntax.

Test Coverage Overview

The test suite provides comprehensive coverage of v-model transformations across different scenarios.

Component v-model binding and updating
Input and textarea element v-model implementations
Cache handling for v-model bindings
Combined v-model and v-on event handling

Implementation Analysis

The testing approach uses assertion-based validation to verify correct transformation of Vue template syntax to Kuaishou mini-program format. It employs template string comparisons to validate both the generated template markup and the corresponding JavaScript render functions.

The tests specifically verify the transformation of v-model directives into platform-specific bindings and event handlers using the _o, _j, and _p compiler utilities.

Technical Details

Testing Framework: Jest
Custom Assert Utility: testUtils
Transformation Verification: Template and render function output
Platform: Kuaishou Mini-Program
Key Dependencies: uni-app compiler

Best Practices Demonstrated

The test suite exemplifies strong testing practices through systematic validation of transform outputs.

Isolated test cases for distinct scenarios
Comprehensive input/output validation
Clear test case organization
Explicit expected outputs
Coverage of edge cases and combinations

dcloudio/uni-app

packages/uni-mp-kuaishou/__tests__/vModel.spec.ts

            
import { assert } from './testUtils'

describe('mp-kuaishou: transform v-model', () => {
  test(`component v-model`, () => {
    assert(
      `<Comp v-model="model" />`,
      `<comp ks:if="{{b}}" u-i="2a9ec0b0-0" bind:__l="__l" eO="{{a}}" bindupdateModelValue="__e" u-p="{{b}}"/>`,
      `(_ctx, _cache) => {
  return { a: _j({ 'updateModelValue': _o($event => _ctx.model = $event) }), b: _p({ modelValue: _ctx.model }) }
}`
    )
  })
  test(`component v-model with cache`, () => {
    assert(
      `<Comp v-model="model" />`,
      `<comp ks:if="{{b}}" u-i="2a9ec0b0-0" bind:__l="__l" eO="{{a}}" bindupdateModelValue="__e" u-p="{{b}}"/>`,
      `(_ctx, _cache) => {
  return { a: _j({ 'updateModelValue': _o($event => _ctx.model = $event) }), b: _p({ modelValue: _ctx.model }) }
}`,
      {
        cacheHandlers: true,
      }
    )
  })
  test(`input,textarea v-model`, () => {
    assert(
      `<input v-model="model" />`,
      `<input data-e-o="{{a}}" value="{{b}}" bindinput="__e"/>`,
      `(_ctx, _cache) => {
  return { a: { 'input': _o($event => _ctx.model = $event.detail.value) }, b: _ctx.model }
}`
    )
    assert(
      `<textarea v-model="model" />`,
      `<textarea data-e-o="{{a}}" value="{{b}}" bindinput="__e"/>`,
      `(_ctx, _cache) => {
  return { a: { 'input': _o($event => _ctx.model = $event.detail.value) }, b: _ctx.model }
}`
    )
  })
  test(`input v-model + v-on`, () => {
    assert(
      `<input @input="input" v-model="model" />`,
      `<input bindinput="__e" data-e-o="{{a}}" value="{{b}}"/>`,
      `(_ctx, _cache) => {
  return { a: { 'input': _o([$event => _ctx.model = $event.detail.value, _ctx.input]) }, b: _ctx.model }
}`
    )
    assert(
      `<input v-model="model" @input="input" />`,
      `<input bindinput="__e" data-e-o="{{a}}" value="{{b}}"/>`,
      `(_ctx, _cache) => {
  return { a: { 'input': _o([$event => _ctx.model = $event.detail.value, _ctx.input]) }, b: _ctx.model }
}`
    )
  })
})