茉莉花测试对象属性 [英] Jasmine test for object properties

问题描述

我想做什么

describe('my object', function() {
  it('has these properties', function() {
    expect(Object.keys(myObject)).toEqual([
      'property1',
      'property2',
      ...
    ]);
  });
});

但是当然Object.keys返回一个数组，根据定义，该数组是有序的...我宁愿不考虑属性排序而进行此测试(这对我来说很有意义，因为无论如何都没有对象键排序的规范...(至少是ES5).

but of course Object.keys returns an array, which by definition is ordered...I'd prefer to have this test pass regardless of property ordering (which makes sense to me since there is no spec for object key ordering anyway...(at least up to ES5)).

如何验证我的对象具有应具有的所有属性，同时又确保它不丢失任何属性，而不必担心以正确的顺序列出这些属性?

How can I verify my object has all the properties it is supposed to have, while also making sure it isn't missing any properties, without having to worry about listing those properties in the right order?

推荐答案

它是

或者，您可以使用外部检查，例如 _.has (其中包含myObject.hasOwnProperty(prop)):

Alternatively, you could use external checks like _.has (which wraps myObject.hasOwnProperty(prop)):

var _ = require('underscore');
describe('my object', function() {
  it('has these properties', function() {
    var props = [
      'property1',
      'property2',
      ...
    ];
    props.forEach(function(prop){
      expect(_.has(myObject, prop)).toBeTruthy();
    })
  });
});

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