forked from denoland/deno
-
Notifications
You must be signed in to change notification settings - Fork 0
/
magic.rs
195 lines (175 loc) · 6.56 KB
/
magic.rs
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
192
193
194
195
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use serde::Deserialize;
use serde::Serialize;
use serde_v8::utils::js_exec;
use serde_v8::utils::v8_do;
use serde_v8::Result;
#[derive(Deserialize)]
struct MagicOp<'s> {
#[allow(unused)]
pub a: u64,
#[allow(unused)]
pub b: u64,
pub c: serde_v8::Value<'s>,
#[allow(unused)]
pub operator: Option<String>,
}
#[derive(Serialize)]
struct MagicContainer<'s> {
pub magic: bool,
pub contains: serde_v8::Value<'s>,
}
#[test]
fn magic_basic() {
v8_do(|| {
let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
let handle_scope = &mut v8::HandleScope::new(isolate);
let context = v8::Context::new(handle_scope);
let scope = &mut v8::ContextScope::new(handle_scope, context);
// Decode
let v = js_exec(scope, "({a: 1, b: 3, c: 'abracadabra'})");
let mop: MagicOp = serde_v8::from_v8(scope, v).unwrap();
// Check string
let v8_value: v8::Local<v8::Value> = mop.c.into();
let vs = v8::Local::<v8::String>::try_from(v8_value).unwrap();
let s = vs.to_rust_string_lossy(scope);
assert_eq!(s, "abracadabra");
// Encode
let container = MagicContainer {
magic: true,
contains: v.into(),
};
let vc = serde_v8::to_v8(scope, container).unwrap();
// JSON stringify & check
let json = v8::json::stringify(scope, vc).unwrap();
let s2 = json.to_rust_string_lossy(scope);
assert_eq!(
s2,
r#"{"magic":true,"contains":{"a":1,"b":3,"c":"abracadabra"}}"#
);
})
}
#[test]
fn magic_buffer() {
v8_do(|| {
// Init isolate
let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
let handle_scope = &mut v8::HandleScope::new(isolate);
let context = v8::Context::new(handle_scope);
let scope = &mut v8::ContextScope::new(handle_scope, context);
let global = context.global(scope);
// Simple buffer
let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
let zbuf: serde_v8::ZeroCopyBuf =
serde_v8::from_v8(scope, v8_array).unwrap();
assert_eq!(&*zbuf, &[1, 2, 3, 4, 5]);
// Multi buffers
let v8_arrays =
js_exec(scope, "[new Uint8Array([1,2]), new Uint8Array([3,4,5])]");
let (z1, z2): (serde_v8::ZeroCopyBuf, serde_v8::ZeroCopyBuf) =
serde_v8::from_v8(scope, v8_arrays).unwrap();
assert_eq!(&*z1, &[1, 2]);
assert_eq!(&*z2, &[3, 4, 5]);
// Wrapped in option, like our current op-ABI
let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
let zbuf: Option<serde_v8::ZeroCopyBuf> =
serde_v8::from_v8(scope, v8_array).unwrap();
assert_eq!(&*zbuf.unwrap(), &[1, 2, 3, 4, 5]);
// Observe mutation in JS
let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
let mut zbuf: serde_v8::ZeroCopyBuf =
serde_v8::from_v8(scope, v8_array).unwrap();
let key = serde_v8::to_v8(scope, "t1").unwrap();
global.set(scope, key, v8_array);
(&mut *zbuf)[2] = 42;
let eq = js_exec(scope, "t1[2] === 42");
assert!(eq.is_true());
// Shared buffers
let v8_array =
js_exec(scope, "new Uint8Array(new SharedArrayBuffer([1,2,3,4,5]))");
let zbuf: Result<serde_v8::ZeroCopyBuf> =
serde_v8::from_v8(scope, v8_array);
assert!(zbuf.is_err());
// Serialization
let buf: Vec<u8> = vec![1, 2, 3, 99, 5];
let zbuf: serde_v8::ZeroCopyBuf = buf.into();
let v8_value = serde_v8::to_v8(scope, zbuf).unwrap();
let key = serde_v8::to_v8(scope, "t2").unwrap();
global.set(scope, key, v8_value);
let eq = js_exec(scope, "t2[3] === 99");
assert!(eq.is_true());
// Composite Serialization
#[derive(serde::Serialize)]
struct Wrapper {
a: serde_v8::ZeroCopyBuf,
b: serde_v8::ZeroCopyBuf,
}
let buf1: Vec<u8> = vec![1, 2, 33, 4, 5];
let buf2: Vec<u8> = vec![5, 4, 3, 2, 11];
let wrapped = Wrapper {
a: buf1.into(),
b: buf2.into(),
};
let v8_value = serde_v8::to_v8(scope, wrapped).unwrap();
let key = serde_v8::to_v8(scope, "t3").unwrap();
global.set(scope, key, v8_value);
let eq = js_exec(scope, "t3.a[2] === 33");
assert!(eq.is_true());
let eq = js_exec(scope, "t3.b[4] === 11");
assert!(eq.is_true());
// ZeroCopyBuf as bytes::Bytes
let v8_array = js_exec(scope, "new Uint8Array([1,2,3,4,5])");
let zbuf: serde_v8::ZeroCopyBuf =
serde_v8::from_v8(scope, v8_array).unwrap();
let buf: bytes::Bytes = zbuf.into();
assert_eq!(buf, bytes::Bytes::from_static(&[1, 2, 3, 4, 5]));
assert_eq!(buf, bytes::Bytes::from_static(&[1, 2, 3, 4, 5]));
assert_eq!(buf.slice(0..2), bytes::Bytes::from_static(&[1, 2]));
assert_eq!(buf.slice(2..), bytes::Bytes::from_static(&[3, 4, 5]));
// We're specifically testing that slices are preserved post-clone
#[allow(clippy::redundant_clone)]
let buf2 = buf.slice(2..).clone();
assert_eq!(buf2, bytes::Bytes::from_static(&[3, 4, 5]));
})
}
#[test]
fn magic_byte_string() {
v8_do(|| {
// Init isolate
let isolate = &mut v8::Isolate::new(v8::CreateParams::default());
let handle_scope = &mut v8::HandleScope::new(isolate);
let context = v8::Context::new(handle_scope);
let scope = &mut v8::ContextScope::new(handle_scope, context);
let global = context.global(scope);
// JS string to ByteString
let v8_string = js_exec(scope, "'test \\0\\t\\n\\r\\x7F\\x80áþÆñ'");
let rust_reflex: serde_v8::ByteString =
serde_v8::from_v8(scope, v8_string).unwrap();
assert_eq!(
rust_reflex.as_slice(),
b"test \0\t\n\r\x7F\x80\xE1\xFE\xC6\xF1"
);
// Non-Latin-1 characters
let v8_string = js_exec(scope, "'日本語'");
let rust_reflex: Result<serde_v8::ByteString> =
serde_v8::from_v8(scope, v8_string);
assert!(rust_reflex.is_err());
// Windows-1252 characters that aren't Latin-1
let v8_string = js_exec(scope, "'œ'");
let rust_reflex: Result<serde_v8::ByteString> =
serde_v8::from_v8(scope, v8_string);
assert!(rust_reflex.is_err());
// ByteString to JS string
let expected = "a\x00sf:~\x7Fá\u{009C}þ\u{008A}";
let buf: Vec<u8> = b"a\x00sf:~\x7F\xE1\x9C\xFE\x8A".as_ref().into();
let zbuf = serde_v8::ByteString::from(buf);
let v8_value = serde_v8::to_v8(scope, zbuf).unwrap();
let key = serde_v8::to_v8(scope, "actual").unwrap();
global.set(scope, key, v8_value);
let v8_value_expected = serde_v8::to_v8(scope, expected).unwrap();
let key_expected = serde_v8::to_v8(scope, "expected").unwrap();
global.set(scope, key_expected, v8_value_expected);
let eq = js_exec(scope, "actual === expected");
assert!(eq.is_true());
})
}