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