Tell about the functions you had to test on your last project.

In my last project, the main focus was on testing functions related to user data processing and business logic.

For example:

• Validation and processing of input forms: checking data correctness, required fields, formats.
• Calculation functions: computing discounts, taxes, final amounts.
• Integration with external services: verifying request accuracy and response handling.
• Authorization and authentication: checking access rights and session validity.

Both unit tests and integration tests were written for these functions to cover different levels and usage scenarios. Special attention was paid to boundary cases and error handling.