SYSTEM TESTING

3) SYSTEM TESTING

It is end-to-end testing wherein testing environment is similar to the production environment.

Here, we navigate through all the features of the software and test if the end business / end feature works. We just test the end feature and don’t check for data flow or do functional testing and all.

Let us consider an example to explain System Testing.

Let us consider Citibank wants a software for overdraft feature. It asks IFlex company to develop the software and it provides CRS to develop the feature. The CRS contains how the overdraft feature works,

The difference between personal loan and overdrafts is – personal loans, loans can be provided upto 20 times more than the monthly income and also takes a long time to approve by the manager for personal loan. Whereas, in Overdraft, the loan amount is twice the monthly income and takes hardly a day to be approved by the manager. For ex, if a customer of Citibank wants a overdraft loan of Rs 20,000 over his monthly income of Rs 10,000. The manager approves the loan. Let us say that the interest rate is 2% and the activation fee for the first time is Rs 250. When the customer repays the loan at the end of the month, then the total amount he pays is – 20,000 + (2% of 20,000) + Activation fee ( 250 ) = 20,000 + 400 + 250 = 20,650Rs. 

Now, for the 2^nd time if the same customer wants another overdraft loan – then no activation fee is taken. Now the customer applies for another overdraft loan of Rs20,000. This time the amount he has to repay is – 20,000 + ( 2% of 20,000 ) = 20,400Rs.

The development team develops the software which looks something like this

The development team develops the required software as shown above. The first figure represents the software that can be accessed by the manager only. The 2^nd figure represents the software that can be accessed by the bank’s customers.

Let us consider system testing now. We test for interest calculation when the customer takes overdrafts for the 1^st time and when he takes overdrafts for the 2^nd time.

Scenario 1

1) Login as A – Apply for OD Rs 20000 – Click on Apply – Logout

2) Login as manager – Approve OD of A – Logout

3) Login as A – Check OD Balance – Rs 20000 should be deposited – Logout

4) Change the server date to next 30days

5) Login as A – Check OD Balance – 20000 + 400 + 250 = 20650 – Logout

6) Login as manager – click on Deposit – Deposit Rs 650 – Logout

7) Login as A – Repay OD amount – Check OD balance – Rs 0

8) Login as manager – Click on Deposit – Deposit Rs 20000 to A’s account - logout

9) Login as A – Apply for OD Rs 20000 – Click on Apply – Logout

10) Login as manager – Approve OD of A – Logout

11) Login as A – Check OD Balance – Rs 20000 should be deposited – Logout

12) Change the server date to next 30days

13) Login as A – Check OD Balance – 20000 + 400 = 20400 – Logout

14) Login as manager – Deposit 400 – logout

15) Login as A – repay OD amount – Check OD balance – Rs 0

Scenario 2 – now we test another scenario where in – let us consider that the bank gives an offer that states that – a customer who takes Rs 50000 as OD for the first time will not be charged activation fee and activation fee will not be refunded when he takes another OD for the 3^rd time – we have to test for 3test scenarios – wherein we have to take OD of Rs 50000 for the first time and check for OD Repay Balance after applying for another OD for 3^rd time.

Scenario 3 – now we take in other scenario – let us consider that the software is being used normally by all customers – suddenly Citibank decides to lower the Activation fee to Rs 125 for new customers – we have to test OD for new customers and see if its accepting only Rs 125.

But, then we get a requirement conflict – Suppose the customer has applied for Rs 20000 as OD with the existing Activation Fee for Rs 250. Before the manager is yet to approve it, the bank lowers the activation fee to Rs 125. Now we have to test what Activation Fee is charged for the OD of the Pending customer – In this case, the testing team cannot assume anything – they have to contact the Business Analyst or the Client and find out what they want in such a case.

Thus, if they (Client) give 1 set of requirement, we must come up with maximum possible scenarios.  

Let us consider another example – insurance domain

When we buy a car, we have to obtain an insurance on that. Let us consider that Bajaj Allianz Insurance company is the one which provides this car insurance. The insurance policy works in this way – for the 1^st year when the car is bought, the insurance to be paid is Rs10000. For the 2^nd year, the insurance must be renewed at Rs10000 again. For the 3^rd year, if no claim has been made, then that customer is offered a discount of Rs1500 and the he must have to renew the insurance at Rs8500 only. If an insurance claim has been made, then the insurance must be renewed at Rs10000 only. Bajaj Allianz Insurance wants the s/w to be developed which works as above. Thus it gives Wipro the CRS of above, to develop the s/w.

The development team develops the s/w as shown below,

The above s/w works in this way. When the insurance agent logs in to the home page, he clicks on New Insurance and creates a new insurance policy for the new customer and fills up all the details and the new customer is assigned a IID (Insurance ID) 100. He then pays the insurance amount Rs10,000. After 1year, when the time has come for renewal, then the agent logs in and clicks on Renew Insurance and enters the IID and renews insurance for Rs 10,000. The different test scenarios for the above are,

Scenario 1 :

1) Login as Agent – click on New Insurance – Create IID 100 and Amount Rs10000

2) Change server date by 1year

3) Login as agent – Click on Renew Insurance – and pay amount Rs 10,000

4) Change server date to 1year

5) Login as Agent – Renew Insurance – IID 100 – Insurance Amount must be Rs 8500 since no claim has been made – thus the test is pass

Scenario 2 :

Same as 1) , 2) , 3)

4) Before you renew for the 3^rd year, Claim Insurance – Change server date to 1year

5) Login as Agent – Renew IID 100 – Rs 10000 – No discount should be made because of the claim made above.

Scenario 3 :

Same as 1), 2), 3) and 4) of 1^st scenario

5) Before you renew 3^rd time, - Click on Claim IID 100 , Rs 15,000 – Try to claim the amount – We shouldn’t be able to claim this because the insurance has expired.

Let us consider another example – Advertisements on the Internet

When we open a website, say www.yahoo.com , we see an ad posted on the above – top of the homepage – it remains there for a few seconds before it disappears – this management of ads is done by something known as AMS – Advertisement Management System. Now we do s/w testing for this domain.

The below s/w works in the following way – let’s say that Nokia wants to showcase an ad on Feb 14^th at exactly 9:00AM on Yahoomail’s homepage for the whole of Asia region. The sales manager logs into the website and makes a request for an ad dated for the above day. He attaches a file ( preferably a video or image file of the Ad ) and submits the application. The following day AMS manager (Advertisement Management System ) of Yahoomail logs on and checks the pending ad requests. He checks the Nokia ad and checks if the space is available for the concerned day and time. If yes, then he estimates the cost of putting up the ad – at 10$ per second, the ad cost estimates upto 100$ for 10seconds. He then clicks on payment request and sends the estimate cost along with the request for payment to the Nokia manager. The Nokia manager logs onto Ad status – and checks the payment request and he makes the payment as per all the details and clicks on Submit and Pay. As soon as Yahoo’s AMS manager receives the payment, he deploys the Ad at the concerned date and time on Yahoomail’s Homepage.