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51 lines
1.3 KiB
Rust
51 lines
1.3 KiB
Rust
// SPDX-License-Identifier: MIT OR Apache-2.0
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//
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// Copyright (c) 2019-2022 Andre Richter <andre.o.richter@gmail.com>
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//! Timer sanity tests.
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#![feature(custom_test_frameworks)]
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#![no_main]
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#![no_std]
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#![reexport_test_harness_main = "test_main"]
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#![test_runner(libkernel::test_runner)]
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use core::time::Duration;
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use libkernel::{bsp, cpu, exception, memory, time, time::interface::TimeManager};
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use test_macros::kernel_test;
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#[no_mangle]
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unsafe fn kernel_init() -> ! {
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exception::handling_init();
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memory::mmu::post_enable_init();
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bsp::console::qemu_bring_up_console();
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// Depending on CPU arch, some timer bring-up code could go here. Not needed for the RPi.
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test_main();
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cpu::qemu_exit_success()
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}
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/// Simple check that the timer is running.
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#[kernel_test]
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fn timer_is_counting() {
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assert!(time::time_manager().uptime().as_nanos() > 0)
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}
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/// Timer resolution must be sufficient.
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#[kernel_test]
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fn timer_resolution_is_sufficient() {
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assert!(time::time_manager().resolution().as_nanos() < 100)
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}
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/// Sanity check spin_for() implementation.
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#[kernel_test]
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fn spin_accuracy_check_1_second() {
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let t1 = time::time_manager().uptime();
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time::time_manager().spin_for(Duration::from_secs(1));
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let t2 = time::time_manager().uptime();
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assert_eq!((t2 - t1).as_secs(), 1)
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}
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