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/*
* 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"
#ifndef SK_BUILD_FOR_WIN
#include <unistd.h>
#include <fcntl.h>
#endif
#define MAX_SIZE (256 * 1024)
static void random_fill(SkMWCRandom& 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) {
SkMWCRandom 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)];
SkMWCRandom 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 test_loop_stream(skiatest::Reporter* reporter, SkStream* stream,
const void* src, size_t len, int repeat) {
SkAutoSMalloc<256> storage(len);
void* tmp = storage.get();
for (int i = 0; i < repeat; ++i) {
size_t bytes = stream->read(tmp, len);
REPORTER_ASSERT(reporter, bytes == len);
REPORTER_ASSERT(reporter, !memcmp(tmp, src, len));
}
// expect EOF
size_t bytes = stream->read(tmp, 1);
REPORTER_ASSERT(reporter, 0 == bytes);
}
static void test_filestreams(skiatest::Reporter* reporter, const char* tmpDir) {
SkString path;
path.printf("%s%s", tmpDir, "wstream_test");
const char s[] = "abcdefghijklmnopqrstuvwxyz";
{
SkFILEWStream writer(path.c_str());
if (!writer.isValid()) {
SkString msg;
msg.printf("Failed to create tmp file %s\n", path.c_str());
reporter->reportFailed(msg.c_str());
return;
}
for (int i = 0; i < 100; ++i) {
writer.write(s, 26);
}
}
{
SkFILEStream stream(path.c_str());
REPORTER_ASSERT(reporter, stream.isValid());
test_loop_stream(reporter, &stream, s, 26, 100);
}
#ifndef SK_BUILD_FOR_WIN
{
int fd = ::open(path.c_str(), O_RDONLY);
SkFDStream stream(fd, true);
REPORTER_ASSERT(reporter, stream.isValid());
test_loop_stream(reporter, &stream, s, 26, 100);
}
#endif
}
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;
if (!skiatest::Test::GetTmpDir().isEmpty()) {
test_filestreams(reporter, skiatest::Test::GetTmpDir().c_str());
}
}
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)
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