Sinon JS：在 Sinon JS 中是否有一种方法可以对对象参数的键值中的方法进行存根处理？

Question

我希望在以下响应中模拟obj.key3值的不同响应。例如，如果obj.key3=true，则返回与其为false时不同的响应。

function method (obj) {
    return anotherMethod({key1: 'val1', key2: obj.key3});
}

- Rakesh Rawat

Answer 1

您可以使用.withArgs() 和一个对象匹配器，根据调用它的参数使 stub 返回（或执行）特定结果。

例如：

var sinon = require('sinon');

// This is just an example, you can obviously stub existing methods too.
var anotherMethod = sinon.stub();

// Match the first argument against an object that has a property called `key2`,
// and based on its value, return a specific string.
anotherMethod.withArgs(sinon.match({ key2 : true }))  .returns('key2 was true');
anotherMethod.withArgs(sinon.match({ key2 : false })) .returns('key2 was false');

// Your example that will now call the stub.
function method (obj) {
  return anotherMethod({ key1 : 'val1', key2: obj.key3 });
}

// Demo
console.log( method({ key3 : true  }) ); // logs: key2 was true
console.log( method({ key3 : false }) ); // logs: key2 was false

关于匹配器(matchers)的更多信息，请点击这里。

- robertklep