What is the purpose of using fixtures in testing?

Fixtures in testing are pre-prepared data or system states used to ensure repeatability and predictability of tests. They allow setting up the test environment (for example, populating a database with necessary records, creating objects with specific parameters) before executing the test.

Goals of using fixtures:

• Provide a stable and controlled environment for tests.
• Isolate tests from external data changes.
• Simplify writing and maintaining tests.

For example, in tests, you can use a fixture that creates a user with specified parameters to verify the authorization functionality.