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Testing v-text Template Directive Compilation in dcloudio/uni-app

This test suite evaluates the v-text directive implementation in uni-app’s UTS Android environment, focusing on template text binding functionality. The tests verify proper text node creation and value binding in the virtual DOM rendering process.

Test Coverage Overview

The test coverage focuses on the v-text directive’s core functionality in template compilation.

Tests template-based text node creation
Verifies proper value binding through toDisplayString
Validates props array configuration
Ensures correct mapping of text content

Implementation Analysis

The testing approach utilizes Jest’s describe/test structure combined with a custom assert utility for comparing template compilation output. The implementation verifies the transformation of v-text directives into createElementVNode calls with appropriate property mappings.

Template string comparison testing
Virtual DOM node creation validation
Property binding verification

Technical Details

Jest test framework
Custom assert utility for template comparison
UTS Android environment configuration
Virtual DOM compilation testing
Property mapping validation

Best Practices Demonstrated

The test suite demonstrates clean and focused unit testing practices with clear input/output validation. It employs precise assertion checking and maintains a single responsibility principle in test structure.

Isolated test cases
Clear expected output definition
Consistent testing patterns
Focused scope per test

dcloudio/uni-app

packages/uni-app-uts/__tests__/android/transforms/vText.spec.ts

            
import { assert } from '../testUtils'

describe('compiler:v-text', () => {
  test('template v-text', () => {
    assert(
      `<text v-text="a"/>`,
      `createElementVNode("text", utsMapOf({
  value: toDisplayString(_ctx.a)
}), null, 8 /* PROPS */, ["value"])`
    )
  })
})