Following is the output of the above-mentioned code when it is run through the help of the SpecRunner.html file. Jasmine is an open-source framework and easily available in different versions like stand-alone, ruby gem, Node.js, etc. Now let us change the code according to the following piece of code, where we are expecting a string type variable as an output of the function AddAny(). Jasmine can be used using a number of programming languages but today we are going to take a look at how to use it with Node.js. All you need to download is the standalone library files from the official website https://jasmine.github.io/ and implement the same in your application. /** * ## Require & Instantiate * * Require Jasmine's core files. Once you successfully download and unzip the zip file, then you will find the following sub-folders inside that zip file. In the following example, we will modify our customerMatcherSpec.js file and see how this actually works. In the same way, we can disable the describe block in order to implement the technique of Skipping Suite.
Jasmine is very easy to implement in any kind of development methodology. In the following example, we will see how the custom matcher works.
We will slightly modify our expectexam JavaScript file. After creating a JavaScript file append the following set of code inside the file.
To implement a failure case we need to write a failure test case. This code will fail because value 4 cannot be greater than 5. It is obvious that this test is going to fail because there is no such file or function to be tested.
All you need to download is the standalone library files from the official website https://jasmine.github.io/ and implement the same in your application. As the screenshot depicts we need to test Abc.js using Jasmine framework. By following BDD procedure, Jasmine provides a small syntax to test the smallest unit of the entire application instead of testing it as a whole. Hence our test fails. Now our application is ready to be tested by Jasmine framework.
Here Jasmine will try to match up true with false.
Matchers are the JavaScript function that does a Boolean comparison between an actual output and an expected output. spyOn() is inbuilt into the Jasmine library which allows you to spy on a definite piece of code. Jasmine is heavily influenced by Rspec, JS Spec, and Jspec.
Please modify the customerMatcher.js file accordingly.
Jasmine is very easy to implement in any kind of development methodology. Jasmine follows Behavior Driven Development (BDD) procedure to ensure that each line of JavaScript statement is properly unit tested. Step 6 − Now Create a web application project in your favorite IDE and add this downloaded library files into the application. It will allow you to spy on your application function calls. In the above code, we have mentioned one variable ”value” and we have explicitly mentioned this value as null.
Jasmine also provides different methods to provide sequentiality of the JS output. In this example, createSpy() method actually mimics the functionality of the getName11(). Following is what our customerMatcherSpec.js looks like.
We will modify the previous example using “x” just before it statement. Jasmine is an open-source framework and easily available in different versions like stand-alone, ruby gem, Node.js, etc.
Although this function is not present in the person object in spy Jasmine.js, we are not getting any error and hence the output is green and positive.
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