Test logging

error_type process_logging() {
    boolean_type logging_enabled = VANILLAPDF_RV_TRUE;
    LoggingSeverity logging_severity;
 
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_IsEnabled(&logging_enabled));
 
    if (logging_enabled != VANILLAPDF_RV_FALSE) {
        return VANILLAPDF_TEST_ERROR_LOGGING_ENABLED;
    }
 
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_Enable());
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_IsEnabled(&logging_enabled));
 
    if (logging_enabled != VANILLAPDF_RV_TRUE) {
        return VANILLAPDF_TEST_ERROR_LOGGING_ENABLED;
    }
 
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_Disable());
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_IsEnabled(&logging_enabled));
 
    if (logging_enabled != VANILLAPDF_RV_FALSE) {
        return VANILLAPDF_TEST_ERROR_LOGGING_ENABLED;
    }
 
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_GetSeverity(&logging_severity));
    RETURN_ERROR_IF_NOT_SUCCESS(Logging_SetSeverity(logging_severity));
 
    return VANILLAPDF_TEST_ERROR_SUCCESS;
}