javascript - sinon stub 数组对象

Question

已经阅读了官方文档并进行了搜索，但我仍然不知道这一点。

简单的源代码:

// obj is an object with an array element
// each element in array has its function
if (obj.arr['key1']) {
    return obj.arr['key1'].getValue();
}

我想要的是控制obj.arr，例如:

var stub = sinon.stub(obj, "arr");
stub['key2'].returns = {...} //add new Index 
delete stub['key1'].returns //remove old Index

Answer 1

您可以像这样在数组中 stub 函数:

myObj = {

    myArray: [
    function(){}, 
    function(){}, 
    function(){}
    ]
}

var stub = sinon.stub(myObj.myArray, [0]).returns() //insert what should be returned

用途:

describe ('foo', function () {

    it ('foo', sinon.test(function () {

        this.stub (myObj.myArray, [0]).returns();

    }))
}

如果您想在 stub 之后自动清理。