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
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { assert, assertEquals } from "../testing/asserts.ts";import {  ServerSentEvent,  ServerSentEventStreamTarget,} from "./server_sent_event.ts";
Deno.test({  name: "ServerSentEvent - construction",  fn() {    const evt = new ServerSentEvent("message", { data: "foobar" });    assertEquals(evt.type, "message");    assertEquals(evt.data, "foobar");    assertEquals(evt.id, undefined);    assertEquals(String(evt), `event: message\ndata: foobar\n\n`);  },});
Deno.test({  name: "ServerSentEvent - data coercion",  fn() {    const evt = new ServerSentEvent("ping", { data: { hello: true } });    assertEquals(evt.type, "ping");    assertEquals(evt.data, `{"hello":true}`);    assertEquals(evt.id, undefined);    assertEquals(String(evt), `event: ping\ndata: {"hello":true}\n\n`);  },});
Deno.test({  name: "ServerSentEvent - init id",  fn() {    const evt = new ServerSentEvent("ping", { data: "foobar", id: 1234 });    assertEquals(evt.type, "ping");    assertEquals(evt.data, `foobar`);    assertEquals(evt.id, 1234);    assertEquals(      String(evt),      `event: ping\nid: 1234\ndata: foobar\n\n`,    );  },});
Deno.test({  name: "ServerSentEvent - data space",  fn() {    const evt = new ServerSentEvent("ping", {      data: { hello: [1, 2, 3] },      space: 2,    });    assertEquals(evt.type, "ping");    assertEquals(evt.data, `{\n  "hello": [\n    1,\n    2,\n    3\n  ]\n}`);    assertEquals(      String(evt),      `event: ping\ndata: {\ndata:   "hello": [\ndata:     1,\ndata:     2,\ndata:     3\ndata:   ]\ndata: }\n\n`,    );  },});
Deno.test({  name: "ServerSentEvent - __message",  fn() {    const evt = new ServerSentEvent("__message", { data: { hello: "world" } });    assertEquals(evt.type, "__message");    assertEquals(evt.data, `{"hello":"world"}`);    assertEquals(String(evt), `data: {"hello":"world"}\n\n`);  },});
Deno.test({  name: "ServerSentEventStreamTarget - construction",  async fn() {    const sse = new ServerSentEventStreamTarget();    assertEquals(sse.closed, false);    const response = sse.asResponse();    await sse.close();    assert(response.body);    const reader = response.body.getReader();    await reader.closed;    assertEquals(response.status, 200);    assertEquals(response.headers.get("content-type"), "text/event-stream");    assertEquals(response.headers.get("connection"), "Keep-Alive");    assertEquals(      response.headers.get("keep-alive"),      "timeout=9007199254740991",    );  },});
Deno.test({  name: "ServerSentEventStreamTarget - construction with headers",  async fn() {    const sse = new ServerSentEventStreamTarget();    const response = sse.asResponse({      headers: new Headers([["X-Deno", "test"], ["Cache-Control", "special"]]),    });    await sse.close();    assertEquals(response.headers.get("content-type"), "text/event-stream");    assertEquals(response.headers.get("connection"), "Keep-Alive");    assertEquals(response.headers.get("x-deno"), "test");    assertEquals(response.headers.get("cache-control"), "no-cache");  },});
Deno.test({  name: "ServerSentEventStreamTarget - dispatchEvent",  async fn() {    const sse = new ServerSentEventStreamTarget();    const response = sse.asResponse();    const evt = new ServerSentEvent("message", { data: "foobar" });    sse.dispatchEvent(evt);    await sse.close();    assertEquals(await response.text(), "event: message\ndata: foobar\n\n");  },});
Deno.test({  name: "ServerSentEventStreamTarget - dispatchMessage",  async fn() {    const sse = new ServerSentEventStreamTarget();    const response = sse.asResponse();    sse.dispatchMessage("foobar");    await sse.close();    assertEquals(await response.text(), "data: foobar\n\n");  },});
Deno.test({  name: "ServerSentEventStreamTarget - dispatchComment",  async fn() {    const sse = new ServerSentEventStreamTarget();    const response = sse.asResponse();    sse.dispatchComment("foobar");    await sse.close();    assertEquals(await response.text(), ": foobar\n\n");  },});
Deno.test({  name: "ServerSentEventStreamTarget - keep-alive setting",  fn() {    const sse = new ServerSentEventStreamTarget({ keepAlive: 1000 });    const response = sse.asResponse();    const p = new Promise<void>((resolve, reject) => {      setTimeout(async () => {        try {          await sse.close();          assertEquals(await response.text(), ": keep-alive comment\n\n");          resolve();        } catch (e) {          reject(e);        }      }, 1250);    });    return p;  },});
Deno.test({  name: "ServerSentEventStreamTarget - connection closed readable stream",  fn() {    let closed = false;    let errored = false;    const sse = new ServerSentEventStreamTarget();    const response = sse.asResponse();    sse.addEventListener("close", () => {      closed = true;    });    sse.addEventListener("error", () => {      errored = true;    });    assert(response.body);    response.body.cancel(      new Error("connection closed before message completed"),    );    assert(closed);    assert(!errored);  },});
Deno.test({  name: "ServerSentEventStreamTarget - inspecting",  fn() {    assertEquals(      Deno.inspect(new ServerSentEventStreamTarget()),      `ServerSentEventStreamTarget { "#bodyInit": ReadableStream { locked: false }, "#closed": false }`,    );  },});