You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: random_timer.rs
    path of file: ./repos/tock/capsules/core/src/test
    
    the code of the file until where you have to start completion: // Licensed under the Apache License, Version 2.0 or the MIT License.
// SPDX-License-Identifier: Apache-2.0 OR MIT
// Copyright Tock Contributors 2022.

//! Test that a Timer implementation is working by trying a few edge
//! cases on the interval, including intervals of 1 and 0. Depends
//! on a working UART and debug! macro. Tries repeating as well as
//! one-shot Timers.
//!
//! Author: Phili
    
    fn set_next_timer(&self) {
        let iv = self.iv.get();
        self.iv.set(iv + 1);

        let counter = self.counter.get();
        if counter == 0 {
            let mut us: u32 = (iv * 745939) % 115843;
            if us % 11 == 0 {
                // Try delays of zero in 1 of 11 cases
                us = 0;
            }
            let new_interval = self.timer.ticks_from_us(us);
            self.interval.set(new_interval.into_u32());
            if us % 7 == 0 {
                let new_counter = 2 + self.interval.get() * 23 % 13;
                self.counter.set(new_counter);
                //debug!("Timer{} repeating with interval {}", self._id, self.interval.get());
                self.timer.repeating(new_interval);
            } else {
                //debug!("Timer{} oneshot with interval {}", self._id, self.interval.get());
                self.timer.oneshot(new_interval);
            }
        } else {
            self.counter.set(counter - 1);
        }
    }