pytest

Define a test function using pytest.

Use the `requests` library to make a request to the API endpoint.

Assert that the response status code is 200.

Assert that the response JSON data matches the expected data structure.

Use pytest fixtures to manage test setup (e.g., setting up a test database).

Set up a test database using a fixture.

Execute a database query using SQLAlchemy or a similar ORM.

Assert that the query returns the expected number of rows.

Assert that the data in the returned rows matches the expected values.

Use pytest.approx to compare floating-point numbers within a tolerance.

Use the `subprocess` module to execute the command-line tool.

Capture the output of the tool.

Assert that the output matches the expected output.

Assert that the tool returns the expected exit code.

Use fixtures to create temporary files or directories for testing.

Use Selenium or a similar web testing framework.

Navigate to the web application's URL.

Locate UI elements using CSS selectors or XPath.

Interact with the UI elements (e.g., clicking buttons, filling forms).

Assert that the UI elements display the expected content and behavior.

Use `pytest.raises` to assert that a specific exception is raised when a function is called.

Verify the exception message matches the expected message.

Test different error conditions to ensure comprehensive exception handling.

Use fixtures to set up error-prone scenarios.