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
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "SkData.h"
#define MAX_SIZE (256 * 1024)
static void random_fill(SkRandom& rand, void* buffer, size_t size) {
char* p = (char*)buffer;
char* stop = p + size;
while (p < stop) {
*p++ = (char)(rand.nextU() >> 8);
}
}
static void test_buffer(skiatest::Reporter* reporter) {
SkRandom rand;
SkAutoMalloc am(MAX_SIZE * 2);
char* storage = (char*)am.get();
char* storage2 = storage + MAX_SIZE;
random_fill(rand, storage, MAX_SIZE);
for (int sizeTimes = 0; sizeTimes < 100; sizeTimes++) {
int size = rand.nextU() % MAX_SIZE;
if (size == 0) {
size = MAX_SIZE;
}
for (int times = 0; times < 100; times++) {
int bufferSize = 1 + (rand.nextU() & 0xFFFF);
SkMemoryStream mstream(storage, size);
SkBufferStream bstream(&mstream, bufferSize);
int bytesRead = 0;
while (bytesRead < size) {
int s = 17 + (rand.nextU() & 0xFFFF);
int ss = bstream.read(storage2, s);
REPORTER_ASSERT(reporter, ss > 0 && ss <= s);
REPORTER_ASSERT(reporter, bytesRead + ss <= size);
REPORTER_ASSERT(reporter,
memcmp(storage + bytesRead, storage2, ss) == 0);
bytesRead += ss;
}
REPORTER_ASSERT(reporter, bytesRead == size);
}
}
}
static void TestRStream(skiatest::Reporter* reporter) {
static const char s[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
char copy[sizeof(s)];
SkRandom rand;
for (int i = 0; i < 65; i++) {
char* copyPtr = copy;
SkMemoryStream mem(s, sizeof(s));
SkBufferStream buff(&mem, i);
do {
copyPtr += buff.read(copyPtr, rand.nextU() & 15);
} while (copyPtr < copy + sizeof(s));
REPORTER_ASSERT(reporter, copyPtr == copy + sizeof(s));
REPORTER_ASSERT(reporter, memcmp(s, copy, sizeof(s)) == 0);
}
test_buffer(reporter);
}
static void TestWStream(skiatest::Reporter* reporter) {
SkDynamicMemoryWStream ds;
const char s[] = "abcdefghijklmnopqrstuvwxyz";
int i;
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, ds.write(s, 26));
}
REPORTER_ASSERT(reporter, ds.getOffset() == 100 * 26);
char* dst = new char[100 * 26 + 1];
dst[100*26] = '*';
ds.copyTo(dst);
REPORTER_ASSERT(reporter, dst[100*26] == '*');
// char* p = dst;
for (i = 0; i < 100; i++) {
REPORTER_ASSERT(reporter, memcmp(&dst[i * 26], s, 26) == 0);
}
{
SkData* data = ds.copyToData();
REPORTER_ASSERT(reporter, 100 * 26 == data->size());
REPORTER_ASSERT(reporter, memcmp(dst, data->data(), data->size()) == 0);
data->unref();
}
delete[] dst;
}
static void TestPackedUInt(skiatest::Reporter* reporter) {
// we know that packeduint tries to write 1, 2 or 4 bytes for the length,
// so we test values around each of those transitions (and a few others)
const size_t sizes[] = {
0, 1, 2, 0xFC, 0xFD, 0xFE, 0xFF, 0x100, 0x101, 32767, 32768, 32769,
0xFFFD, 0xFFFE, 0xFFFF, 0x10000, 0x10001,
0xFFFFFD, 0xFFFFFE, 0xFFFFFF, 0x1000000, 0x1000001,
0x7FFFFFFE, 0x7FFFFFFF, 0x80000000, 0x80000001, 0xFFFFFFFE, 0xFFFFFFFF
};
size_t i;
char buffer[sizeof(sizes) * 4];
SkMemoryWStream wstream(buffer, sizeof(buffer));
for (i = 0; i < SK_ARRAY_COUNT(sizes); ++i) {
bool success = wstream.writePackedUInt(sizes[i]);
REPORTER_ASSERT(reporter, success);
}
wstream.flush();
SkMemoryStream rstream(buffer, sizeof(buffer));
for (i = 0; i < SK_ARRAY_COUNT(sizes); ++i) {
size_t n = rstream.readPackedUInt();
if (sizes[i] != n) {
SkDebugf("-- %d: sizes:%x n:%x\n", i, sizes[i], n);
}
REPORTER_ASSERT(reporter, sizes[i] == n);
}
}
// Test that setting an SkMemoryStream to a NULL data does not result in a crash when calling
// methods that access fData.
static void TestDereferencingData(SkMemoryStream* memStream) {
memStream->read(NULL, 0);
memStream->getMemoryBase();
SkAutoDataUnref data(memStream->copyToData());
}
static void TestNullData() {
SkData* nullData = NULL;
SkMemoryStream memStream(nullData);
TestDereferencingData(&memStream);
memStream.setData(nullData);
TestDereferencingData(&memStream);
}
static void TestStreams(skiatest::Reporter* reporter) {
TestRStream(reporter);
TestWStream(reporter);
TestPackedUInt(reporter);
TestNullData();
}
#include "TestClassDef.h"
DEFINE_TESTCLASS("Stream", StreamTestClass, TestStreams)
|
