A Compact Guide To Parallel Testing

Parallel testing is a type of testing, in which testers perform the testing for multiple applications or sub-component of one application to reduce the test time.

When any organization upgrading their system by converting the old system into new and the data is an important part and transferring this data is a complex process.

When verifying compatibility of a newly developed system with the existing old system is called “Parallel Testing”.In Parallel testing, testers run old system and new system concurrently with the same input to test that both the systems are behaving same or not.

Below image defines the Parallel Testing:

Why do Parallel Testing?

• Parallel testing is performed to check whether the new system is performing correctly or not.

• Parallel testing is performed to check the integrity of a new system.

• Parallel testing is performed to check the consistency between old and new versions of a system.

When to do Parallel Testing?

• When an organization moving from old version to new version or system.

• When important data is imported from one system to another.

• When synchronization is performed between two systems.

   

Pre-conditions to Perform Parallel Testing:-

• The parallel test should be started when environment setup has done properly.

• All preconditions and scenarios should be defined first.

• New data and legacy data must be integrated properly.

Following steps should be followed to perform Parallel Testing:-

Step 1:-Run newly developed system and old system together.

Step 2:- Understand the difference between newly developed system and old system.

Step 3:-Test complete cycle using same inputs in both newly developed systems and old system.

Step 4:-compare the output of the newly developed system and old system.

Step 5:-If found any bug report that.