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// libnbd Rust test case
// Copyright Tage Johansson
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#![deny(warnings)]
mod nbdkit_pattern;
use nbdkit_pattern::PATTERN;
#[tokio::test]
async fn test_async_pread_structured() {
let nbd = libnbd::AsyncHandle::new().unwrap();
nbd.connect_command(&[
"nbdkit",
"-s",
"--exit-with-parent",
"-v",
"pattern",
"size=1M",
])
.await
.unwrap();
fn f(buf: &[u8], offset: u64, s: u32, err: &mut i32) {
assert_eq!(*err, 0);
*err = 42;
assert_eq!(buf, PATTERN.as_slice());
assert_eq!(offset, 0);
assert_eq!(s, libnbd::READ_DATA);
}
let mut buf = [0; 512];
nbd.pread_structured(
&mut buf,
0,
|b, o, s, e| {
f(b, o, s, e);
0
},
None,
)
.await
.unwrap();
assert_eq!(buf.as_slice(), PATTERN.as_slice());
nbd.pread_structured(
&mut buf,
0,
|b, o, s, e| {
f(b, o, s, e);
0
},
Some(libnbd::CmdFlag::DF),
)
.await
.unwrap();
assert_eq!(buf.as_slice(), PATTERN.as_slice());
let res = nbd
.pread_structured(
&mut buf,
0,
|b, o, s, e| {
f(b, o, s, e);
-1
},
Some(libnbd::CmdFlag::DF),
)
.await;
assert_eq!(res.unwrap_err().errno(), Some(42));
}
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