anonReq.Body = readerOne

	// call the HTTP handler.
	apiRouter.ServeHTTP(rec, anonReq)

	// expected error response when the unsigned HTTP request is not permitted.
	accessDenied := getAPIError(ErrAccessDenied).HTTPStatusCode
	if rec.Code != accessDenied {
		t.Fatal(failTestStr(anonTestStr, fmt.Sprintf("Object API Nil Test expected to fail with %d, but failed with %d", accessDenied, rec.Code)))
	}

		// to a meaningful S3 API errors. This is added to aid in
		// debugging unexpected/unhandled errors.
		internalLogIf(ctx, err)
	}

	return apiErr
}

// getAPIError provides API Error for input API error code.
func getAPIError(code APIErrorCode) APIError {
	if apiErr, ok := errorCodes[code]; ok {
		return apiErr
	}
	return errorCodes.ToAPIErr(ErrInternalError)
}