我如何监视Typescript的获取器和设置器? [英] How do I spyOn Typescript getters and setters?

问题描述

当我进行单元测试时，我的吸气剂是Typescript的二传手，我找不到监视这些吸气剂和二传手的方法.而是，该对象立即得到评估.我正在使用Jasmine进行单元测试.

When I unit test my getters are setters for Typescript, I cannot find a way to spy on those getters and setters. Instead, the object immediately gets evaluated. I am using Jasmine to unit test.

推荐答案

尚不支持，但是如果您现在真的需要支持，则可以扩展 SpyRegistry .js 文件并添加 apsillers 建议的代码:

If you really need the support now, you can extend SpyRegistry.js file and add the code that apsillers proposed:

this.spyOnProperty = function(obj, methodName, accessType) {
    ...
    var desc = Object.getPropertyDescriptor(obj, methodName);
    if(desc[accessType]) { // "get" or "set" exists on the property
        var spy = j$.createSpy(methodName, desc[accessType]);  

        desc[accessType] = spy;

        Object.defineProperty(obj, methodName, desc);
    }
}

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