What are some examples of performance testing decorators?

What are some examples of performance testing decorators?

Performance testing decorators are used to measure the performance of functions in your code. For example, you can create a decorator that logs the time taken by a function to execute.

Can you show me a code example of such a decorator?

Sure! Here's a simple example in Python:

import time

def performance_decorator(func):
    def wrapper(*args, **kwargs):
        start_time = time.time()
        result = func(*args, **kwargs)
        end_time = time.time()
        print(f"{func.__name__} took {end_time - start_time:.4f} seconds to execute.")
        return result
    return wrapper

@performance_decorator
def my_function():
    time.sleep(1)
    print("Function executed!")

my_function()

What other use cases do performance testing decorators have?

They can be used for profiling, logging performance metrics, and even for benchmarking different implementations of a function.

Are there any libraries that provide built-in decorators for performance testing?

Yes, libraries like timeit in Python can help with performance testing, and some frameworks offer built-in decorators for this purpose.