如何使$ httpBackend对URL查询参数的顺序不敏感? [英] How can I make $httpBackend insensitive to the order of URL query parameters?

问题描述

我正在使用Angular.js $httpBackend测试一些包装$http调用的服务(这是在ngMock中，而不是 ngMockE2E中).

I am using the Angular.js $httpBackend to test some services that wrap $http calls (this is in ngMock, not ngMockE2E).

似乎expect和when之类的东西对URL查询参数的顺序敏感.例如.如果我执行$httpBackend.when('POST','/apiCall?X=1&Y=2').respond(/* ... */)或$httpBackend.expectPOST('/apiCall?X=1&Y=2')，如果URL中包含 Y = 2& X = 1 而不是 X = 1& Y = 2 ，则会收到URL不匹配的情况>.

It seems that things like expect and when are sensitive to the order of URL query parameters. E.g. if I do $httpBackend.when('POST','/apiCall?X=1&Y=2').respond(/* ... */) or $httpBackend.expectPOST('/apiCall?X=1&Y=2'), I get URL mismatches if I have Y=2&X=1 in the URL instead of X=1&Y=2.

我想以这样的方式编写测试:被测试的服务可以自由更改URL查询字符串参数的顺序，而不会破坏测试.我无法在$ httpBackend文档中找到任何解决方法.正确的方法是什么?

I want to write my tests in such a way that the service being tested will be free to change the order of URL query string parameters without breaking the tests. I haven't been able to find anything to solve this in the $httpBackend documentation. What's the right way to do this?

推荐答案

angular将对与$ http结合使用的params对象的键进行排序.

angular will sort the keys of the params object used in conjunction with $http.

$http({
    url:"/myurl",
    method:"GET",
    params:{
       Y:1
       X:2
    }}); 

Angular将有效地执行以下操作:Object.keys(myParams).sort() 并按此顺序附加键. 最终是'/myurl?X=2&Y=1'

Angular will do the following effectively: Object.keys(myParams).sort() and append the keys in that order. which ends up being '/myurl?X=2&Y=1'

我建议不要在URL中直接使用查询参数，而要在角度params:中使用该参数，然后角度将进行处理.

I would suggest consistently using query parameters not directly in the url, but instead in the parameter params: that angular will then process.

另一种解决方案是在测试中使用正则表达式，例如

Another solution would be to use Regular Expressions in your tests, something like

$httpBackend.expectPOST(/\/myurl\?((X|Y)=\d{1,}&?){2}/) 自从文档重新设计以来，您很难使用RegExp，因为颜色不会混合.

The fact that you can use RegExp's is really hard to spot since the documentation redesign, as the colors do not blend.

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