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e8678b1030
coverage: Format all coverage tests with `rustfmt` As suggested by <https://github.com/rust-lang/rust/pull/119984#discussion_r1452856806>. Test files in `tests/` are normally ignored by `x fmt`, but sometimes those files end up being run through `rustfmt` anyway, either by `rust-analyzer` or by hand. When that happens, it's annoying to have to manually revert formatting changes that are unrelated to the actual changes being made. So it's helpful for the tests in the repository to already have standard formatting beforehand. However, there are several coverage tests that deliberately use non-standard formatting, so that line counts reveal more information about where code regions begin and end. In those cases, we can use `#[rustfmt::skip]` to prevent that code from being disturbed. ``@rustbot`` label +A-code-coverage
66 lines
1.6 KiB
Rust
66 lines
1.6 KiB
Rust
#![feature(coverage_attribute)]
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#![feature(noop_waker)]
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// edition: 2018
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macro_rules! bail {
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($msg:literal $(,)?) => {
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if $msg.len() > 0 {
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println!("no msg");
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} else {
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println!($msg);
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}
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return Err(String::from($msg));
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};
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}
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macro_rules! on_error {
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($value:expr, $error_message:expr) => {
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$value.or_else(|e| {
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// FIXME(85000): no coverage in closure macros
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let message = format!($error_message, e);
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if message.len() > 0 {
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println!("{}", message);
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Ok(String::from("ok"))
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} else {
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bail!("error");
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}
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})
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};
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}
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fn load_configuration_files() -> Result<String, String> {
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Ok(String::from("config"))
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}
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pub async fn test() -> Result<(), String> {
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println!("Starting service");
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let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
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let startup_delay_duration = String::from("arg");
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let _ = (config, startup_delay_duration);
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Ok(())
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}
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#[coverage(off)]
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fn main() {
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executor::block_on(test()).unwrap();
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}
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mod executor {
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use core::future::Future;
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use core::pin::pin;
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use core::task::{Context, Poll, Waker};
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#[coverage(off)]
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pub fn block_on<F: Future>(mut future: F) -> F::Output {
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let mut future = pin!(future);
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let mut context = Context::from_waker(Waker::noop());
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loop {
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if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
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break val;
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}
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}
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}
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}
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