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Testing v-if Directive Transformation for Baidu Mini Program in uni-app

This test suite validates the v-if directive transformation functionality in the uni-app framework for Baidu Mini Program compatibility. It ensures proper conversion of Vue conditional rendering syntax to Baidu’s Smart Program equivalent syntax.

Test Coverage Overview

The test suite focuses on validating the transformation of Vue’s v-if directives to Baidu Mini Program’s s-if syntax.

Tests basic conditional rendering with v-if, v-else-if, and v-else directives
Verifies correct template transformation
Ensures proper expression evaluation and context binding

Implementation Analysis

The testing approach utilizes Jest framework with custom assertion utilities to verify template transformations. The implementation follows a pattern of comparing input Vue template syntax against expected Baidu Mini Program output, with additional verification of the generated render function.

The test leverages template string literals and specialized assertion helpers to streamline the testing process.

Technical Details

Testing Framework: Jest
Custom Assertion Utilities: testUtils
Template Transformation Testing
Render Function Validation
Context Binding Verification

Best Practices Demonstrated

The test suite exemplifies strong testing practices through clear test case organization and comprehensive validation of both template transformation and runtime behavior.

Isolated test scenarios
Clear input/output validation
Runtime context verification
Structured assertion patterns

dcloudio/uni-app

packages/uni-mp-baidu/__tests__/vIf.spec.ts

            
import { assert } from './testUtils'

describe(`mp-baidu: transform v-if`, () => {
  test(`basic`, () => {
    assert(
      `<view v-if="ok"/><view v-else-if="ok1"/><view v-else/>`,
      `<view s-if="{{a}}"/><view s-elif="{{b}}"/><view s-else/>`,
      `(_ctx, _cache) => {
  return _e({ a: _ctx.ok }, _ctx.ok ? {} : _ctx.ok1 ? {} : {}, { b: _ctx.ok1 })
}`
    )
  })
})