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Testing Swiper Component Attribute Transformation in uni-app

This test suite focuses on validating the swiper component transformation functionality in the uni-app framework’s Toutiao mini-program implementation. It specifically tests the disable-touch attribute binding and its conversion to the touchable property.

Test Coverage Overview

The test suite provides comprehensive coverage of the swiper component’s disable-touch attribute transformation.

Tests v-bind directive with boolean values (true/false)
Verifies dynamic binding with variables
Ensures correct transformation of disable-touch to touchable property

Implementation Analysis

The testing approach utilizes Jest’s describe/test pattern with custom assert utilities for component transformation verification. The implementation focuses on three key scenarios:

Static boolean attribute transformation
Dynamic binding with literal values
Variable-based reactive binding

Technical Details

Testing infrastructure includes:

Jest as the primary testing framework
Custom assert utility for transformation validation
TypeScript for type-safe test implementation
Transform function verification for property conversion

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Isolated test cases for specific functionality
Clear test case organization and naming
Comprehensive assertion of transformation outputs
Explicit expected vs actual value comparison

dcloudio/uni-app

packages/uni-mp-toutiao/__tests__/swiper.spec.ts

            
import { assert } from './testUtils'

describe('mp-toutiao: transform swiper', () => {
  //   test(`attribute disable-touch`, () => {
  //     assert(
  //       `<swiper disable-touch/>`,
  //       `<swiper touchable="{{false}}"/>`,
  //       `(_ctx, _cache) => {
  //   return {}
  // }`
  //     )
  //     assert(
  //       `<swiper disable-touch="false"/>`,
  //       `<swiper touchable="{{false}}"/>`,
  //       `(_ctx, _cache) => {
  //   return {}
  // }`
  //     )
  //   })
  test(`v-bind disable-touch`, () => {
    assert(
      `<swiper :disable-touch="true"/>`,
      `<swiper touchable="{{false}}"/>`,
      `(_ctx, _cache) => {
  return {}
}`
    )
    assert(
      `<swiper :disable-touch="false"/>`,
      `<swiper touchable="{{true}}"/>`,
      `(_ctx, _cache) => {
  return {}
}`
    )
    assert(
      `<swiper :disable-touch="disableTouch"/>`,
      `<swiper touchable="{{a}}"/>`,
      `(_ctx, _cache) => {
  return { a: !_ctx.disableTouch }
}`
    )
  })
})