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#![feature(coverage_attribute)]
#![feature(custom_inner_attributes)] // for #![rustfmt::skip]
#![allow(unused_assignments, dead_code)]
#![rustfmt::skip]
//@ edition: 2018
//@ compile-flags: -Copt-level=1
//@ aux-build: executor.rs
extern crate executor;
async fn c(x: u8) -> u8 {
if x == 8 {
1
} else {
0
}
}
async fn d() -> u8 { 1 }
async fn e() -> u8 { 1 } // unused function; executor does not block on `g()`
async fn f() -> u8 { 1 }
async fn foo() -> [bool; 10] { [false; 10] } // unused function; executor does not block on `h()`
pub async fn g(x: u8) {
match x {
y if e().await == y => (),
y if f().await == y => (),
_ => (),
}
}
async fn h(x: usize) { // The function signature is counted when called, but the body is not
// executed (not awaited) so the open brace has a `0` count (at least when
// displayed with `llvm-cov show` in color-mode).
match x {
y if foo().await[y] => (),
_ => (),
}
}
async fn i(x: u8) { // line coverage is 1, but there are 2 regions:
// (a) the function signature, counted when the function is called; and
// (b) the open brace for the function body, counted once when the body is
// executed asynchronously.
match x {
y if c(x).await == y + 1 => { d().await; }
y if f().await == y + 1 => (),
_ => (),
}
}
fn j(x: u8) {
// non-async versions of `c()`, `d()`, and `f()` to make it similar to async `i()`.
fn c(x: u8) -> u8 {
if x == 8 {
1
} else {
0
}
}
fn d() -> u8 { 1 } // inner function is defined in-line, but the function is not executed
fn f() -> u8 { 1 }
match x {
y if c(x) == y + 1 => { d(); }
y if f() == y + 1 => (),
_ => (),
}
}
fn k(x: u8) { // unused function
match x {
1 => (),
2 => (),
_ => (),
}
}
fn l(x: u8) {
match x {
1 => (),
2 => (),
_ => (),
}
}
async fn m(x: u8) -> u8 { x - 1 }
fn main() {
let _ = g(10);
let _ = h(9);
let mut future = Box::pin(i(8));
j(7);
l(6);
let _ = m(5);
executor::block_on(future.as_mut());
}
|
