[英]Using object types with Jasmine's toHaveBeenCalledWith method
我剛剛開始使用Jasmine,請原諒新手問題但是在使用toHaveBeenCalledWith
時是否可以測試對象類型?
expect(object.method).toHaveBeenCalledWith(instanceof String);
我知道我可以做到這一點,但它正在檢查返回值而不是參數。
expect(k instanceof namespace.Klass).toBeTruthy();
我發現了一個更酷的機制,使用jasmine.any()
,因為我發現手動分開的參數是易讀性的次優。
在CoffeeScript中:
obj = {}
obj.method = (arg1, arg2) ->
describe "callback", ->
it "should be called with 'world' as second argument", ->
spyOn(obj, 'method')
obj.method('hello', 'world')
expect(obj.method).toHaveBeenCalledWith(jasmine.any(String), 'world')
toHaveBeenCalledWith
是一個間諜的方法。 所以你只能在間諜上調用它們,如文檔中所述:
// your class to test
var Klass = function () {
};
Klass.prototype.method = function (arg) {
return arg;
};
//the test
describe("spy behavior", function() {
it('should spy on an instance method of a Klass', function() {
// create a new instance
var obj = new Klass();
//spy on the method
spyOn(obj, 'method');
//call the method with some arguments
obj.method('foo argument');
//test the method was called with the arguments
expect(obj.method).toHaveBeenCalledWith('foo argument');
//test that the instance of the last called argument is string
expect(obj.method.calls.mostRecent().args[0] instanceof String).toBeTruthy();
});
});
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.