Thus, one may use the following sequence to perform a regexp match on call arguments, when one wants to check that the string arguments match a specific regular expression: There are special matchers for interacting with spies.

A spy only exists in the describe or it block in which it is defined, and will be removed after each spec. Has anyone else seen a problem like this?Thanks for the report Ryan. The toHaveBeenCalledWith() matcher verifies whether the spied method has been called with the right argument(s). Anyways the gist of the problem is summarized by my first post.

This means, you can test it against your custom types too, not just the built in ones. In this… Jasmine — Async TestsTesting is an important part of JavaScript. Hope this helps. There are two matchers toHaveBeenCalled and toHaveBeenCalledWith which should be used with spies. The toHaveBeenCalledWith() matcher verifies whether the spied method has been called with the right argument(s). GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.By clicking “Sign up for GitHub”, you agree to our I noticed some strange slow behavior when using toHaveBeenCalledWith with Backbone events. A spy can stub any function and tracks calls to it and all arguments. Jasmine is a behavior-driven development framework for testing JavaScript code. This guide is running against Jasmine version A test suite begins with a call to the global Jasmine function Specs are defined by calling the global Jasmine function Each matcher implements a boolean comparison between the actual value and the expected value. How to get all arguments for all calls that have been made to the spy?

In this article, we're going to move on to spying on our methods using mocks. method . The toHaveBeenCalledWith() matcher returns true and the spec passes This syntax has changed for Jasmine …

There are two matchers toHaveBeenCalled and toHaveBeenCalledWith which should be used with spies. expect(foo).toHaveBeenCalledWith(jasmine.any(Number), jasmine.any(Function)); It takes a constructor name and compares it to the constructor of the value. It looks like your fix is doing something different than what toHaveBeenCalledWith is doing.toHaveBeenCalledWith will check ALL of the calls for anything that matches your provided arguments.

Each is used here - all expectations and specs pass.

A spy only exists in the describe or it block in which it is defined, and will be removed after each spec.

A spy can stub any function and tracks calls to it and all arguments. After doing some digging, I've discovered that Jasmine spy objects have a calls property, which in turn has a mostRecent() function.

Is it possible to do this without writing a custom matcher? I want to be able to call toHaveBeenCalledWith(something, anything).. Let's say I want to spy on a method .on(event, callback).All I care about is if the event is listened to rather than what the actual callback identity is.

Jasmine will then pass or fail the spec.Any matcher can evaluate to a negative assertion by chaining the call to Jasmine has a rich set of matchers included. And it has a clean, obvious syntax so that you can easily write tests. toHaveBeenCalledWith: equal vs. identical arguments Showing 1-2 of 2 messages. If you want to check the arguments for multiple calls to your spy, you should use toHaveBeenCalledWith multiple times. Jasmine will then pass or fail the spec.Any matcher can evaluate to a negative assertion by chaining the call to Jasmine has a rich set of matchers included.

If the timeout expires before If specific specs should fail faster or need more time this can be adjusted by setting If the entire suite should have a different timeout,

toHaveBeenCalledWith: equal vs. identical arguments: Tim Buschtoens: 2/7/14 5:42 AM: Hi there. Spread the love Related Posts Getting Started with Testing with JasmineTesting is an important part of JavaScript.

Jasmine has test double functions called spies.