...

Challenges

Pairwise or t-wise testing even though useful, it's not a silver bullet.

Some challenges or limitations to be aware of include:

1. test oracle: this technique doesn't address finding the proper test oracle for the generated scenarios. How do we know the scenario is behaving as expected? How do we know that a given scenario has issues or not?
2. modeling: depicting a "good" model requires the intervention of testers. Testers with the help of other team members are the ones able to figure out representative and important scenarios to model , their parameters, the values for those parameters, constraints, etc. 

Using pairwise and t-wise for scripted testing and exploratory testing

...

Pairwise and t-wise testing don't tell us how to actually perform testing; it just generates the combination of parameters. Therefore, we can use this technique also if choose to adopt a more exploratory testing approach, for example for certain configurations of hardware/software.

Challenges

Pairwise or t-wise testing even though useful, it's not a silver bullet.

Some challenges or limitations to be aware of include:

1. test oracle: this technique doesn't address finding the proper test oracle for the generated scenarios. How do we know the scenario is behaving as expected? How do we know that a given scenario has issues or not?
2. modeling: depicting a "good" model requires the intervention of testers. Testers with the help of other team members are the ones able to figure out representative and important scenarios to model , their parameters, the values for those parameters, constraints, etc. 

Xray datasets and Xray Test Case Designer

Xray has built-in support for parameterized tests and datasets, supporting user-defined datasets and automatic generation of combinations for the identified parameters.

Test Case Designer (TCD) provides a more comprehensive modeling tool, where it's possible to define parameters, apply constraints, enforce specific scenarios, generate optimized datasets/scenarios using 2-way or n-way to ensure that certain parameters are tested together, up to a certain level. With Test Case Designer it's possible to have a limited and manageabled set of test scenarios to perform and make sure that most combination of parameters are met with the initial scenarios, so that most risk is addressed upfront.

TCD doesn't replace Xray built-in capabilities for parameterized tests and datasets; it's a more evolved approach. Both can be used in a given project.

...