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use futures::executor::block_on;
use futures::io::{AsyncWriteExt, LineWriter};
use std::io;
#[test]
fn line_writer() {
let mut writer = LineWriter::new(Vec::new());
block_on(writer.write(&[0])).unwrap();
assert_eq!(*writer.get_ref(), []);
block_on(writer.write(&[1])).unwrap();
assert_eq!(*writer.get_ref(), []);
block_on(writer.flush()).unwrap();
assert_eq!(*writer.get_ref(), [0, 1]);
block_on(writer.write(&[0, b'\n', 1, b'\n', 2])).unwrap();
assert_eq!(*writer.get_ref(), [0, 1, 0, b'\n', 1, b'\n']);
block_on(writer.flush()).unwrap();
assert_eq!(*writer.get_ref(), [0, 1, 0, b'\n', 1, b'\n', 2]);
block_on(writer.write(&[3, b'\n'])).unwrap();
assert_eq!(*writer.get_ref(), [0, 1, 0, b'\n', 1, b'\n', 2, 3, b'\n']);
}
#[test]
fn line_vectored() {
let mut line_writer = LineWriter::new(Vec::new());
assert_eq!(
block_on(line_writer.write_vectored(&[
io::IoSlice::new(&[]),
io::IoSlice::new(b"\n"),
io::IoSlice::new(&[]),
io::IoSlice::new(b"a"),
]))
.unwrap(),
2
);
assert_eq!(line_writer.get_ref(), b"\n");
assert_eq!(
block_on(line_writer.write_vectored(&[
io::IoSlice::new(&[]),
io::IoSlice::new(b"b"),
io::IoSlice::new(&[]),
io::IoSlice::new(b"a"),
io::IoSlice::new(&[]),
io::IoSlice::new(b"c"),
]))
.unwrap(),
3
);
assert_eq!(line_writer.get_ref(), b"\n");
block_on(line_writer.flush()).unwrap();
assert_eq!(line_writer.get_ref(), b"\nabac");
assert_eq!(block_on(line_writer.write_vectored(&[])).unwrap(), 0);
assert_eq!(
block_on(line_writer.write_vectored(&[
io::IoSlice::new(&[]),
io::IoSlice::new(&[]),
io::IoSlice::new(&[]),
io::IoSlice::new(&[]),
]))
.unwrap(),
0
);
assert_eq!(block_on(line_writer.write_vectored(&[io::IoSlice::new(b"a\nb")])).unwrap(), 3);
assert_eq!(line_writer.get_ref(), b"\nabaca\nb");
}