1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
use tokio::stream::{self, StreamExt};
use tokio::sync::mpsc;
use tokio_test::{assert_pending, assert_ready, assert_ready_err, assert_ready_ok, task};
use bytes::{Bytes, BytesMut};
#[allow(clippy::let_unit_value)]
#[tokio::test]
async fn empty_unit() {
// Drains the stream.
let mut iter = vec![(), (), ()].into_iter();
let _: () = stream::iter(&mut iter).collect().await;
assert!(iter.next().is_none());
}
#[tokio::test]
async fn empty_vec() {
let coll: Vec<u32> = stream::empty().collect().await;
assert!(coll.is_empty());
}
#[tokio::test]
async fn empty_box_slice() {
let coll: Box<[u32]> = stream::empty().collect().await;
assert!(coll.is_empty());
}
#[tokio::test]
async fn empty_bytes() {
let coll: Bytes = stream::empty::<&[u8]>().collect().await;
assert!(coll.is_empty());
}
#[tokio::test]
async fn empty_bytes_mut() {
let coll: BytesMut = stream::empty::<&[u8]>().collect().await;
assert!(coll.is_empty());
}
#[tokio::test]
async fn empty_string() {
let coll: String = stream::empty::<&str>().collect().await;
assert!(coll.is_empty());
}
#[tokio::test]
async fn empty_result() {
let coll: Result<Vec<u32>, &str> = stream::empty().collect().await;
assert_eq!(Ok(vec![]), coll);
}
#[tokio::test]
async fn collect_vec_items() {
let (tx, rx) = mpsc::unbounded_channel();
let mut fut = task::spawn(rx.collect::<Vec<i32>>());
assert_pending!(fut.poll());
tx.send(1).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
tx.send(2).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
drop(tx);
assert!(fut.is_woken());
let coll = assert_ready!(fut.poll());
assert_eq!(vec![1, 2], coll);
}
#[tokio::test]
async fn collect_string_items() {
let (tx, rx) = mpsc::unbounded_channel();
let mut fut = task::spawn(rx.collect::<String>());
assert_pending!(fut.poll());
tx.send("hello ".to_string()).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
tx.send("world".to_string()).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
drop(tx);
assert!(fut.is_woken());
let coll = assert_ready!(fut.poll());
assert_eq!("hello world", coll);
}
#[tokio::test]
async fn collect_str_items() {
let (tx, rx) = mpsc::unbounded_channel();
let mut fut = task::spawn(rx.collect::<String>());
assert_pending!(fut.poll());
tx.send("hello ").unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
tx.send("world").unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
drop(tx);
assert!(fut.is_woken());
let coll = assert_ready!(fut.poll());
assert_eq!("hello world", coll);
}
#[tokio::test]
async fn collect_bytes() {
let (tx, rx) = mpsc::unbounded_channel();
let mut fut = task::spawn(rx.collect::<Bytes>());
assert_pending!(fut.poll());
tx.send(&b"hello "[..]).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
tx.send(&b"world"[..]).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
drop(tx);
assert!(fut.is_woken());
let coll = assert_ready!(fut.poll());
assert_eq!(&b"hello world"[..], coll);
}
#[tokio::test]
async fn collect_results_ok() {
let (tx, rx) = mpsc::unbounded_channel();
let mut fut = task::spawn(rx.collect::<Result<String, &str>>());
assert_pending!(fut.poll());
tx.send(Ok("hello ")).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
tx.send(Ok("world")).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
drop(tx);
assert!(fut.is_woken());
let coll = assert_ready_ok!(fut.poll());
assert_eq!("hello world", coll);
}
#[tokio::test]
async fn collect_results_err() {
let (tx, rx) = mpsc::unbounded_channel();
let mut fut = task::spawn(rx.collect::<Result<String, &str>>());
assert_pending!(fut.poll());
tx.send(Ok("hello ")).unwrap();
assert!(fut.is_woken());
assert_pending!(fut.poll());
tx.send(Err("oh no")).unwrap();
assert!(fut.is_woken());
let err = assert_ready_err!(fut.poll());
assert_eq!("oh no", err);
}
|
