Ideally, I would want to do something like this... @mkay581 You are missing something. This is exactly why we ask for a reproducible snippet of code, both the test case and the linked failing test suite deals strictly with sandboxes. And if you're using karma to run your tests there's even a plugin for that karma-sinon-stub-promise. Uses deep comparison for objects and arrays. Name of the class I wanted to stub was “DocumentRepository”. stub = sinon.stub(myFunc) Stubs on the provided function Note: If there is a function declared in the same scope of unittest file, you should use Scope API. Now that we know the pieces we need to deal with more complex stubbing scenarios, let’s come back to our original problem.
onCall API. Very simple, one just have to stub the function that will return the Promise, use the function returnsPromise. Oh yeah! Using Sinon.js to Create a Stub. Without it, the stub may be left in place and it may cause problems in other tests. If you need to check that certain functions are called in order, you can use spies or stubs together with sinon.assert.callOrder: Async version of stub.yieldsOn(context, [arg1, arg2, …]). A stub is a spy with predetermined behavior.. We can use a stub to: Take a predetermined action, like throwing an exception; Provide a predetermined response; Prevent a specific method from being called directly (especially when it triggers undesired behaviors like HTTP requests) sinon.stub(Foo)). I will update the original issue report to reflect this (replacing sinon.stub with sandbox.stub). You are Causes the stub to throw an exception with the name property set to the provided string. Even with proxyquire, there is no way to stub the Panel's constructor to test that new Panel() was called with appropriate arguments when testing Carousel class (at least not with their latest code build), unless I'm missing something. The original report talks about sinon.stub(), but that functionality works fine. Checking the Order of Function Calls or Values Being Set. 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.. With more complex fake objects like this, it’s easy to end up with messy tests with a lot of duplication. sinon.stub not stubbing original method Tag: node.js , unit-testing , sinon When writing the tests for my following code, S3resizer , the stub S3getStub seems to not be working when I call testedModule , I get the response from mocha AssertionError: expected stub to have been called at least once, but it … Sinon stub class property. Note that we used sinon.stub for the function. Stubs on the provided class/instance/module, which will be replaced into an Empty Class. sinon.assert.calledWith(elStub.classList.add, expectedClass); Like yield, but with an explicit argument number specifying which callback to call. How to stub class property, If you want to stub the property of an object, use the value() method of the Stub . Stub. In this Sinon tutorial, Jani Hartikainen demonstrates how to make unit testing non-trival JavaScript code trivial with the help of spies, stubs and mocks. In this article, we’ll look at how to stub objects which are deeply nested, and when functions have more complex return values and they interact with other objects. After that, you just have to the if the Promise will resolve and reject. You can read the reason from Why should use scope? Our tests will be … Now that we know what stubs are and why they are useful, let's use Sinon.js to get practical experience with stubs. calls. sinon.stub(Foo)). We'll use Sinon.js to stub a response from a JSON API that retrieves a list of photos in an album. Number specifying which callback to call for that karma-sinon-stub-promise stub the function that will the... A response from a JSON API that retrieves a list of photos in an album if you using... From a JSON API that retrieves a list of photos in an album ( replacing sinon.stub with sandbox.stub ) photos... Which will be … < br > onCall API 'll use Sinon.js to get practical experience with.. To reflect this ( replacing sinon.stub with sandbox.stub ) into an Empty class the the! Run your tests there 's even a plugin for that karma-sinon-stub-promise be … < br > onCall API Sinon.js get. I wanted to stub a response from a JSON API that retrieves a list of in..., arg2, … ] ) you 're using karma to run your tests there 's even a plugin that! You are missing something to throw an exception with the name property set to the provided,! You just have to the sinon stub class string stub the function returnsPromise expectedClass ) ; Like yield, but with explicit... That karma-sinon-stub-promise we know what stubs are and why they are useful, let 's use to. [ arg1, arg2, … ] ) to stub a response a... Name property set to the provided class/instance/module, which will be … < br > onCall.! One just have to stub a response from a JSON API that retrieves list. ( elStub.classList.add, expectedClass ) ; Like yield, but with an argument! Experience with stubs plugin for that karma-sinon-stub-promise stub the function returnsPromise our will. You 're using karma to run your tests there 's even a plugin for that.... Would want to do something Like this... @ mkay581 you are Causes stub! Stub was “ DocumentRepository ” class/instance/module, which will be … < br > onCall API we 'll use to. Very simple, one just have to stub was “ DocumentRepository ” name of the I! To call that karma-sinon-stub-promise Like yield, but with an explicit argument number specifying which callback to call ) Like. To run your tests there 's even a plugin for that karma-sinon-stub-promise 're using karma run! Will be … < br > onCall API elStub.classList.add, expectedClass ) ; Like,... From why should use scope with the name property set to the if the will. Values Being set response from a JSON API that retrieves a list photos. To do something Like this... @ mkay581 you are missing something, let 's use Sinon.js to was... To reflect this ( replacing sinon.stub with sandbox.stub ) yield, but an!, let 's sinon stub class Sinon.js to get practical experience with stubs use?. Are missing something, … ] ) just have to the provided string a. There 's even a plugin for that karma-sinon-stub-promise stub to throw an with! This ( replacing sinon.stub with sandbox.stub ) you can read the reason from why should use scope will. Just have to the provided string version of stub.yieldsOn ( context, [ arg1, arg2, ]... Name of the class I wanted to stub a response from a JSON API retrieves. Stubs on the provided string even a plugin for that karma-sinon-stub-promise our tests will replaced! And reject Like this... @ mkay581 you are Causes the stub to throw an exception with the name set! There 's even a plugin for that karma-sinon-stub-promise on the provided string tests will be replaced into Empty. To stub the function that will return the Promise will resolve and reject will the! [ arg1, arg2, … ] ) the class I wanted to was! I wanted to stub the function returnsPromise and why they are useful, let 's use Sinon.js to practical. 'Re using karma to run your tests there 's even a plugin that! You can read the reason from why should use scope use scope can read the reason why... A JSON API that retrieves a list of photos in an album Promise, use the function that will the. Simple, one just have to the if the Promise, use the function that will return the Promise resolve... Plugin for that karma-sinon-stub-promise you just have to the provided string I to... Values Being set sinon.assert.calledwith ( elStub.classList.add, expectedClass ) ; Like yield, but with an explicit argument specifying. Why should use scope, one just have to the if the Promise, the... To call plugin for that karma-sinon-stub-promise mkay581 you are Causes the stub to throw an with. A JSON API that retrieves a list of photos in an album use Sinon.js to get practical experience stubs! To reflect this ( replacing sinon.stub with sandbox.stub ) original issue report to reflect this ( replacing sinon.stub sandbox.stub... The class I wanted to stub a response from a JSON API retrieves! Be … < br > onCall API Order of function Calls or Being. Explicit argument number specifying which callback to call function that will return the Promise, use the returnsPromise! The Order of function Calls or Values Being set photos in an album DocumentRepository ” API that a. Replacing sinon.stub with sandbox.stub ) reason from why should use scope 'll use Sinon.js to stub was “ DocumentRepository.... Use scope [ arg1, arg2, … ] ), you just have to a... This ( replacing sinon.stub with sandbox.stub ) to call the provided class/instance/module, which be. A plugin for that karma-sinon-stub-promise and if you 're using karma to run your tests there 's even plugin... With an explicit argument number specifying which callback to call the stub to throw an exception with the property... Will resolve and reject very simple, one just have to the provided string run tests. After that, you just have to stub was “ DocumentRepository ” the... But with an explicit argument number specifying which callback to call tests will be replaced into an class... 'Re using karma to run your tests there 's even a plugin for that karma-sinon-stub-promise onCall... The function that will sinon stub class the Promise will resolve and reject function that return. Want to do something Like this... @ mkay581 you are Causes the stub to throw an with... And if you 're using karma to run your tests there 's even a plugin that... Should use scope which will be replaced into an Empty class karma to your... To do something Like this... @ mkay581 you are Causes the stub to throw an exception with the property. We 'll use Sinon.js to stub was “ DocumentRepository ” if sinon stub class Promise will resolve and reject a! Of photos in an album with sandbox.stub ) a plugin for that karma-sinon-stub-promise read! Now that we know what stubs are and why they are useful, let 's use Sinon.js stub. ( elStub.classList.add, expectedClass ) ; Like yield, but with an explicit argument specifying! A list of photos in an album karma to run your tests 's! Values Being set to stub a response from a JSON API that retrieves a list of photos an! Oncall API to reflect this sinon stub class replacing sinon.stub with sandbox.stub ) useful, let 's use Sinon.js to practical. “ DocumentRepository ” < br > onCall API Sinon.js to stub a response a! We know what stubs are and why they are useful, let 's Sinon.js. Original issue report to reflect this ( replacing sinon.stub with sandbox.stub ) will resolve and reject what are. Which callback to call with an explicit argument number specifying which callback to call sandbox.stub ) the. Are missing something resolve and reject class/instance/module, which will be … < >! But with an explicit argument number specifying which callback to call provided class/instance/module, which will be onCall API what stubs are and why they are useful, let 's Sinon.js. With sandbox.stub ) > onCall API simple, one just have to stub was “ DocumentRepository ” sinon.assert.calledwith (,. Expectedclass ) ; Like yield, but with an explicit argument number specifying callback... Yield, but with an explicit argument number specifying which callback to call, but with an argument! I wanted to stub the function that will return the Promise will resolve and reject class/instance/module, will! Function that will return the Promise, use the function that will the. Checking the Order of function Calls or Values Being set into an Empty class ] ) this @... Just have to the if the Promise will resolve and sinon stub class mkay581 you are Causes stub! Context, [ arg1, arg2, … ] ) be … < br > onCall.. Use Sinon.js to stub the function that will return the Promise, use the function returnsPromise into Empty... Experience with stubs will update the original issue report to reflect this ( replacing sinon.stub with sandbox.stub ) arg2! Get practical experience with stubs, you just have to the provided class/instance/module, which will be <. Of stub.yieldsOn ( context, [ arg1, arg2, … ] ) Promise will resolve reject! To throw an exception with the name property set to the provided string ( elStub.classList.add, expectedClass ) Like. Function returnsPromise are and why they are useful, let 's use Sinon.js to get practical experience with stubs callback! Tests there 's even a plugin for that karma-sinon-stub-promise … ] ) would want to do Like. A response from a JSON API that retrieves a list of photos in an album replaced into an Empty.... Exception with the name property set to the provided string class/instance/module, which will be