85 lines
2.3 KiB
Rust
85 lines
2.3 KiB
Rust
#![warn(rust_2018_idioms)]
|
|
|
|
use bytes::buf::Buf;
|
|
use bytes::Bytes;
|
|
|
|
#[test]
|
|
fn long_take() {
|
|
// Tests that get a take with a size greater than the buffer length will not
|
|
// overrun the buffer. Regression test for #138.
|
|
let buf = b"hello world".take(100);
|
|
assert_eq!(11, buf.remaining());
|
|
assert_eq!(b"hello world", buf.chunk());
|
|
}
|
|
|
|
#[test]
|
|
fn take_copy_to_bytes() {
|
|
let mut abcd = Bytes::copy_from_slice(b"abcd");
|
|
let abcd_ptr = abcd.as_ptr();
|
|
let mut take = (&mut abcd).take(2);
|
|
let a = take.copy_to_bytes(1);
|
|
assert_eq!(Bytes::copy_from_slice(b"a"), a);
|
|
// assert `to_bytes` did not allocate
|
|
assert_eq!(abcd_ptr, a.as_ptr());
|
|
assert_eq!(Bytes::copy_from_slice(b"bcd"), abcd);
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic]
|
|
fn take_copy_to_bytes_panics() {
|
|
let abcd = Bytes::copy_from_slice(b"abcd");
|
|
abcd.take(2).copy_to_bytes(3);
|
|
}
|
|
|
|
#[cfg(feature = "std")]
|
|
#[test]
|
|
fn take_chunks_vectored() {
|
|
fn chain() -> impl Buf {
|
|
Bytes::from([1, 2, 3].to_vec()).chain(Bytes::from([4, 5, 6].to_vec()))
|
|
}
|
|
|
|
{
|
|
let mut dst = [std::io::IoSlice::new(&[]); 2];
|
|
let take = chain().take(0);
|
|
assert_eq!(take.chunks_vectored(&mut dst), 0);
|
|
}
|
|
|
|
{
|
|
let mut dst = [std::io::IoSlice::new(&[]); 2];
|
|
let take = chain().take(1);
|
|
assert_eq!(take.chunks_vectored(&mut dst), 1);
|
|
assert_eq!(&*dst[0], &[1]);
|
|
}
|
|
|
|
{
|
|
let mut dst = [std::io::IoSlice::new(&[]); 2];
|
|
let take = chain().take(3);
|
|
assert_eq!(take.chunks_vectored(&mut dst), 1);
|
|
assert_eq!(&*dst[0], &[1, 2, 3]);
|
|
}
|
|
|
|
{
|
|
let mut dst = [std::io::IoSlice::new(&[]); 2];
|
|
let take = chain().take(4);
|
|
assert_eq!(take.chunks_vectored(&mut dst), 2);
|
|
assert_eq!(&*dst[0], &[1, 2, 3]);
|
|
assert_eq!(&*dst[1], &[4]);
|
|
}
|
|
|
|
{
|
|
let mut dst = [std::io::IoSlice::new(&[]); 2];
|
|
let take = chain().take(6);
|
|
assert_eq!(take.chunks_vectored(&mut dst), 2);
|
|
assert_eq!(&*dst[0], &[1, 2, 3]);
|
|
assert_eq!(&*dst[1], &[4, 5, 6]);
|
|
}
|
|
|
|
{
|
|
let mut dst = [std::io::IoSlice::new(&[]); 2];
|
|
let take = chain().take(7);
|
|
assert_eq!(take.chunks_vectored(&mut dst), 2);
|
|
assert_eq!(&*dst[0], &[1, 2, 3]);
|
|
assert_eq!(&*dst[1], &[4, 5, 6]);
|
|
}
|
|
}
|