rust/tests/coverage/try_error_result.rs

120 lines
2.5 KiB
Rust

#![allow(unused_assignments)]
#![cfg_attr(rustfmt, rustfmt::skip)]
//@ failure-status: 1
fn call(return_error: bool) -> Result<(), ()> {
if return_error {
Err(())
} else {
Ok(())
}
}
fn test1() -> Result<(), ()> {
let mut
countdown = 10
;
for
_
in
0..10
{
countdown
-= 1
;
if
countdown < 5
{
call(/*return_error=*/ true)?;
call(/*return_error=*/ false)?;
}
else
{
call(/*return_error=*/ false)?;
}
}
Ok(())
}
struct Thing1;
impl Thing1 {
fn get_thing_2(&self, return_error: bool) -> Result<Thing2, ()> {
if return_error {
Err(())
} else {
Ok(Thing2 {})
}
}
}
struct Thing2;
impl Thing2 {
fn call(&self, return_error: bool) -> Result<u32, ()> {
if return_error {
Err(())
} else {
Ok(57)
}
}
}
fn test2() -> Result<(), ()> {
let thing1 = Thing1{};
let mut
countdown = 10
;
for
_
in
0..10
{
countdown
-= 1
;
if
countdown < 5
{
thing1.get_thing_2(/*err=*/ false)?.call(/*err=*/ true).expect_err("call should fail");
thing1
.
get_thing_2(/*return_error=*/ false)
?
.
call(/*return_error=*/ true)
.
expect_err(
"call should fail"
);
let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ true)?;
assert_eq!(val, 57);
let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ false)?;
assert_eq!(val, 57);
}
else
{
let val = thing1.get_thing_2(/*return_error=*/ false)?.call(/*return_error=*/ false)?;
assert_eq!(val, 57);
let val = thing1
.get_thing_2(/*return_error=*/ false)?
.call(/*return_error=*/ false)?;
assert_eq!(val, 57);
let val = thing1
.get_thing_2(/*return_error=*/ false)
?
.call(/*return_error=*/ false)
?
;
assert_eq!(val, 57);
}
}
Ok(())
}
fn main() -> Result<(), ()> {
test1().expect_err("test1 should fail");
test2()
?
;
Ok(())
}