Data Driven API Testing Using Rest Assured

In this session, we would be looking into how we can perform the data-driven tests while doing API Testing using Rest assured.

As we all understand data-driven testing is an integral and important part while designing any testing framework as it helps us to segregate our test data from the code. 


So whenever any change happens in the data we don’t need to go and update that in code instead, we can update test data in our the source where we have kept it (Test Data can be kept either in excel or in some configuration or class files inside our project).

So In this session, we would be continuing doing some data driven test with One Sample API that we already have worked in our previous session.

As you have observed in my last blog we have done the hard coding of our Base URI and also every time when doing post requests we are taking the body from our code which is not good practice and should be avoided. Below is the code snapshot from my last blog.

In this session, we would be looking into two approaches of doing the Data-Driven Test while doing API Testing

ü  Using Properties or Configuration file

ü  Using Class File

Approach 1:

For Reading test data from Properties or configuration the file we can perform below steps

1)  Inside project main Folder under Configuration or any other Package of your choice create one text file with extension as .properties in this example I am creating one file named as Config.properties

2)  In these properties, the file declares the value in Key, value format of our Base URI.

3)  In project Base Class or in same test Class, declare one Properties variable and provide the path of .properties file along with below code snapshot.

4)  Now we are ready to use our Properties file inside test classes using below syntax.

pro.getProperty("BaseUrl");

Here, the getProperty method will take the Key of the property as a parameter and return the value of the matched key from the .properties file.

Approach 2:

Similarly for reading data from Another Class file we could follow the below steps:

1)  Inside project main Folder under Resources or any other Package of your choice create one class file let’s say TestResources.java

2)  In this Class create one static function and declare the body which we want to put in request and return that string.

3)  Finally Call this function inside our test class using

    classname.function name

The final Code for the API would look like below. If we observed carefully this code is much cleaner and easy to maintain than my last code.

SHARE THIS