Avoid inaccurate tests: Use httptest when testing HTTP handlers in Go

Testing HTTP handlers in Go involves wrapping inputs in HTTP requests and writing responses to http.ResponseWriter. Using client-side requests for handler tests can lead to inaccuracies; instead, use the httptest package to construct server-side requests with httptest.NewRequest or httptest.NewRequestWithContext. For capturing responses, httptest.NewRecorder provides a mock implementation of http.ResponseWriter. Always use a new response recorder for each handler call and extract responses using the Result method.