Expectations implement both the spies and stubs APIs. Learn more, We use analytics cookies to understand how you use our websites so we can make them better, e.g. And I'm not aware of a way to stub the entire class (ie. //to stub someObject.aFunction...
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callbacks were called, and also that the exception throwing stub was called We’ll occasionally send you account related emails.
Causes the stub to throw the argument at the provided index.
Granted, it still doesn't test the actual constructor, but I usually try to leave testing to code lines with a higher ROI . See also Asynchronous calls.
nodejs run with the --harmony flag), not Babel ES6=>ES5 code. If you feel that your topic is an issue with Sinon.JS, please open a new ticket and follow the guidelines for reporting an issue. This is useful to be more expressive in your assertions, where you can access the spy with the same call. ES classes are sugar coated ES5 classes and can be stubbed in the same way using sinon.createStubInstance.
If you want to see if a function gets called, just supply a stub instead. Causes the stub to return promises using a specific Promise library instead of As of 1.8, this functionality has been removed in favor of the I think what you want is to investigate the sinon.createStubInstance method. an undefined value will be returned; starting from email@example.com, a TypeError querySelectorAll: sinon.stub() Thanks, so I came here in search of a solution to the OP's problem, which seems to be similar to the issue I'm having.
Async version of stub.callsArgOnWith(index, context, arg1, arg2, …). undefined for the property accessors.
Like above but with an additional parameter to pass the this context. Westy wants to stub a property, not a function. If a method accepts more than one callback, you need to use yieldsRight to call the last callback or callsArg to have the stub invoke other callbacks than the first or last one.
We’ll use DOM objects as a practical example, as they’re used quite often, and they can present several challenges when stubbing.
For example, we used document.body.getElementsByTagName as an example above.
Like callsArg, but with arguments to pass to the callback.
first argument. It appears that ES6 class constructors cannot be changed after construction, and so calling spy/stub/whatever on them is a nonsense operation. As such, I believe Sinon should throw an error when you try to stub a constructor, rather than letting the user believe that the stub worked. Add a custom behavior. Invokes callbacks passed as a property of an object to the stub. Although we used DOM objects as an example here, you can apply these same methods to stub any kind of more complex object.
onCall can be combined with all of the behavior defining methods in this section. Just opening up a little bit for dependency injection is a pragmatic middle-way that does less magic IMHO, at the expense of a few lines.
overrides the behavior of the stub. By clicking “Sign up for GitHub”, you agree to our terms of service and
P.S. When constructing the Promise, sinon uses the Promise.reject method.
So, I guess I just have to weigh my distaste for, on the one hand, making test-only changes to non-test code vs. my desire to test whether new Foo() was called, on the other.
Sign in thrown.
It's conform me in the fact ES6 classes are not completely ready to be widely used: they can't be tested easily. We could’ve used an empty “normal” function too, but this way we can easily specify the behavior for setAttribute in our tests, and we can also do assertions against it.
We are trying to keep the GitHub issues list tidy and focused on bugs and feature discussions. var stub = sinon.stub(obj); Stubs all the object’s methods. Learn more.
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