Question

我目前有两个功能，分别是测试：

function A(x) {
  // do A things
  return Aresults;
}
function testA() {
  // this put A through its test and make sure it does what it's supposed to
}

和

function B(x) {
  // do B things which involve using A
  return Bresults;
}
function testB() {
  // this put B through its test and make sure it does what it's supposed to
}

我现在意识到A的唯一用途是在B.所以我想重新分解并保护代码：

function B(x) {
  function A(x) {
    // do A things
    return Aresults;
  }
  // do B things which involve using A
  return Bresults;
}
function testB() {
  // this put B through its test and make sure it does what it's supposed to
}

我的问题是我怎么能为A添加测试，因为它是B的封闭功能？即我的testA功能在哪里？

Answer 1

你不需要。单元测试的目的是测试行为而非实现。

所以你测试了什么方法，而不是它是如何做的。

从这个角度来看，你应该只关心函数调用产生的副作用，就是这样。

测试关闭功能

1 个答案: