What is critical path testing?

Critical Path Testing is a testing approach that focuses on verifying the most important and frequently used system usage scenarios.

Objective:

• Ensure stable operation of key system functions.
• Minimize risks of failures in the most critical business processes.
• Confirm that main user journeys work correctly.

Criteria for defining the critical path:

• Usage frequency: Scenarios used by the majority of users.
• Business value: Scenarios directly related to revenue generation, performing key operations, or achieving main business goals.
• Impact of failure: Scenarios where failure would lead to serious consequences (data loss, financial losses, reputational damage).
• Interconnection with other functions: Scenarios that depend on or include many other functions.

Stages of critical path testing:

1. Identification: Determining key business processes and usage scenarios.
2. Prioritization: Highlighting the most critical paths based on established criteria.
3. Test case development: Creating detailed test cases for verifying each step of the critical path.
4. Execution: Running the developed test cases.
5. Results analysis: Evaluating testing results and fixing defects identified primarily on critical paths.

Advantages:

• Maximum coverage of the most important functions.
• Efficient use of testing resources.
• Early detection of critical defects.
• Increased confidence in system stability.

Disadvantages:

• Less comprehensive coverage of other system functions.
• Need for clear definition of critical paths.

Example of a critical path for an online store:

1. User login or registration.
2. Search for a product by name or category.
3. Add product to cart.
4. Proceed to checkout.
5. Choose delivery method.
6. Choose payment method.
7. Make payment.
8. Confirm the order.