-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathencoder.test.ts
More file actions
249 lines (198 loc) · 5.91 KB
/
encoder.test.ts
File metadata and controls
249 lines (198 loc) · 5.91 KB
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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
import { describe, expect, it } from "vitest"
// eslint-disable-next-line antfu/no-import-dist
import { Encoder } from "../dist/encoder.mjs"
describe(".grow", () => {
it("should grow by the given size", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.setInt8(3)
encoder.setInt8(4)
encoder.grow(4)
expect(encoder.currentSize).toBe(8)
})
it("should grow by the given size 2", () => {
const encoder = new Encoder(5)
encoder.grow(8)
expect(encoder.currentSize).toBe(13)
})
})
describe(".growIfNeeded", () => {
it("should not grow the buffer if needed", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.growIfNeeded(2)
expect(encoder.buffer.length).toBe(4)
})
it("should grow the buffer if needed", () => {
const encoder = new Encoder(0)
encoder.growIfNeeded(1)
expect(encoder.buffer.length).toBe(1)
})
it("should grow the buffer if needed 2", () => {
const encoder = new Encoder(2)
encoder.growIfNeeded(4)
expect(encoder.buffer.length).toBe(4)
})
it("should grow the buffer if needed 3", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.growIfNeeded(4)
expect(encoder.buffer.length).toBe(6)
})
})
describe(".seek", () => {
it("should return the previous offset", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
const previous = encoder.seek(2)
expect(previous).toBe(2)
})
it("should grow the buffer if needed", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.seek(4)
expect(encoder.buffer.length).toBe(6)
})
it("should seek the given offset", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.seek(-2)
expect(encoder.currentOffset).toBe(0)
})
})
describe(".goto", () => {
it("should goto the given offset", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.goto(0)
expect(encoder.currentOffset).toBe(0)
})
it("should return the previous offset", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
const previous = encoder.goto(2)
expect(previous).toBe(2)
})
it("should grow the buffer if needed", () => {
const encoder = new Encoder(4)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.goto(4)
expect(encoder.buffer.length).toBe(4)
})
})
describe(".alignTo", () => {
it("should not move if already aligned", () => {
const encoder = new Encoder(4)
encoder.alignTo(4)
expect(encoder.currentOffset).toBe(0)
})
it("should not move if already aligned 2", () => {
const encoder = new Encoder(4)
encoder.setUint32(1)
encoder.alignTo(4)
expect(encoder.currentOffset).toBe(4)
})
it("should align to the given byte", () => {
const encoder = new Encoder(4)
encoder.setInt8(2)
encoder.alignTo(4)
expect(encoder.currentOffset).toBe(4)
})
it("should grow the buffer if needed", () => {
const encoder = new Encoder(5)
encoder.setInt8(1)
encoder.setInt8(2)
encoder.setInt8(3)
encoder.setInt8(4)
encoder.setInt8(5)
encoder.alignTo(8)
expect(encoder.buffer.length).toBe(8)
})
})
const cases = [
["setInt8", 1, undefined],
["setUint8", 1, undefined],
["setInt16", 2, undefined],
["setUint16", 2, undefined],
["setInt32", 4, undefined],
["setUint32", 4, undefined],
["setInt64", 8, BigInt],
["setUint64", 8, BigInt],
// ["setFloat", 4],
// ["setDouble", 8],
] as const
describe.each(cases)(".%s", (method, size, convert) => {
const num = (num: number) => (convert?.(num) as never) ?? num
it("should write a value", () => {
const encoder = new Encoder(size)
encoder[method](num(1))
expect(encoder.buffer[0]).toBe(1)
})
it("should write multiple values", () => {
const encoder = new Encoder(size * 4)
encoder[method](num(1))
encoder[method](num(2))
encoder[method](num(3))
encoder[method](num(4))
expect(encoder.buffer[0]).toBe(1)
})
it("should grow the buffer if needed", () => {
const encoder = new Encoder(size * 2)
encoder[method](num(1))
encoder[method](num(2))
encoder[method](num(3))
expect(encoder.buffer.length).toBe(size * 3)
})
it("should not grow the buffer if pointer is not outside the buffer", () => {
const encoder = new Encoder(size * 4) // 4
encoder[method](num(1))
encoder[method](num(2))
encoder[method](num(3))
encoder[method](num(4))
encoder[method](num(5), { into: 0 })
const buffer = encoder.buffer
expect(buffer[0]).toBe(5)
expect(buffer[size * 3]).toBe(4)
expect(buffer.length).toBe(size * 4)
})
})
describe(".setString", () => {
it("should write the string", () => {
const encoder = new Encoder(5)
encoder.setString("test")
const textDecoder = new TextDecoder()
expect(textDecoder.decode(encoder.buffer)).toBe("test\x00")
})
it("should write 2-byte characters correctly", () => {
const encoder = new Encoder()
encoder.setString("Ûbercharge")
const textDecoder = new TextDecoder()
expect(textDecoder.decode(encoder.buffer)).toBe("Ûbercharge\x00")
})
it("should grow the buffer if needed", () => {
const encoder = new Encoder(2)
encoder.setUint16(1)
encoder.setString("test")
const buffer = encoder.buffer
expect(buffer.length).toBe(7)
expect(buffer[0]).toBe(1)
const textDecoder = new TextDecoder()
expect(textDecoder.decode(buffer.subarray(2))).toBe("test\x00")
})
it("uses the provided encoding", () => {
const encoder = new Encoder()
encoder.setString("TEST", { encoding: "utf-16le" })
const buffer = encoder.buffer
expect(buffer.toString("utf-16le")).toBe("TEST\x00")
expect(buffer.toString("utf8")).not.toBe("TEST\x00")
})
})