問題描述

我有一個具有以下功能的數據服務

I have a data service with following function

function getInsureds(searchCriteria) {

    var deferred = $q.defer();

    insuredsSearch.get(searchCriteria,
        function (insureds) {
            deferred.resolve(insureds);
        },
        function (response) {
            deferred.reject(response);
        });

    return deferred.promise;
}

我想測試以下功能:

function search ()
{
  dataService
      .getInsureds(vm.searchCriteria)
      .then(function (response) {
           vm.searchCompleted = true;

            if (response.insureds.length > 100) {
              vm.searchResults = response.insureds.slice(0, 99);
            } else {
                vm.searchResults = response.insureds;
           }
       });
}

我將如何對承諾進行存根，以便在我調用 getInsureds 時它會解決承諾并立即返回結果.我是這樣開始的(茉莉花測試)，但我被卡住了，因為我不知道如何解決承諾并傳遞所需的參數.

How would I stub the promise so that when I call getInsureds it would resolve the promise and return me the results immediately. I started like this (jasmine test), but I am stuck, as I don't know how to resolve the promise and pass in arguments needed.

it("search returns over 100 results searchResults should contain only 100 records ", function () {

    var results103 = new Array();

    for (var i = 0; i < 103; i++) {
        results103.push(i);
    }

    var fakeSearchForm = { $valid: true };
    var isSearchValidStub = sinon.stub(sut, "isSearchCriteriaValid").returns(true);

    var deferred = $q.defer();
    var promise = deferred.promise;
    var dsStub = sinon.stub(inSearchDataSvc, "getInsureds").returns(promise);

    var resolveStub = sinon.stub(deferred, "resolve");

    //how do i call resolve  and pass in results103

    sut.performSearch(fakeSearchForm);

    sinon.assert.calledOnce(isSearchValidStub);
    sinon.assert.calledOnce(dsStub);

    sinon.assert.called(resolveStub);

    expect(sut.searchResults.length).toBe(100);

});

推薦答案

你只需要在調用搜索函數之前解決promise.這樣，您的存根將返回已解決的承諾，并且 then 將立即被調用.所以不是

You just have to resolve the promise before you call the search function. This way your stub will return a resolved promise and then will be called immediately. So instead of

var resolveStub = sinon.stub(deferred, "resolve");

您將使用您的虛假響應數據解決延遲問題

you will resolve the deferred with your fake response data

deferred.resolve({insureds: results103})

這篇關于一個stub如何與sinon約定?的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！