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skia2/tests/DataRefTest.cpp
Mike Reed 706f6b4069 test data.equals with empty 
Change-Id: Ib79fb2ba099a0d094ab16b1d7307c03e64b1fd1f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/271240
Commit-Queue: Mike Reed <reed@google.com>
Auto-Submit: Mike Reed <reed@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2020-02-17 17:53:49 +00:00

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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 "include/core/SkData.h"
#include "include/core/SkDataTable.h"
#include "include/core/SkRWBuffer.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/private/SkTArray.h"
#include "include/private/SkTemplates.h"
#include "src/core/SkOSFile.h"
#include "src/core/SkTaskGroup.h"
#include "src/utils/SkOSPath.h"
#include "tests/Test.h"
#include <cstdio>
#include <cstring>
#include <memory>
static void test_is_equal(skiatest::Reporter* reporter,
const SkDataTable* a, const SkDataTable* b) {
REPORTER_ASSERT(reporter, a->count() == b->count());
for (int i = 0; i < a->count(); ++i) {
size_t sizea, sizeb;
const void* mema = a->at(i, &sizea);
const void* memb = b->at(i, &sizeb);
REPORTER_ASSERT(reporter, sizea == sizeb);
REPORTER_ASSERT(reporter, !memcmp(mema, memb, sizea));
}
}
static void test_datatable_is_empty(skiatest::Reporter* reporter, SkDataTable* table) {
REPORTER_ASSERT(reporter, table->isEmpty());
REPORTER_ASSERT(reporter, 0 == table->count());
}
static void test_emptytable(skiatest::Reporter* reporter) {
sk_sp<SkDataTable> table0(SkDataTable::MakeEmpty());
sk_sp<SkDataTable> table1(SkDataTable::MakeCopyArrays(nullptr, nullptr, 0));
sk_sp<SkDataTable> table2(SkDataTable::MakeCopyArray(nullptr, 0, 0));
sk_sp<SkDataTable> table3(SkDataTable::MakeArrayProc(nullptr, 0, 0, nullptr, nullptr));
test_datatable_is_empty(reporter, table0.get());
test_datatable_is_empty(reporter, table1.get());
test_datatable_is_empty(reporter, table2.get());
test_datatable_is_empty(reporter, table3.get());
test_is_equal(reporter, table0.get(), table1.get());
test_is_equal(reporter, table0.get(), table2.get());
test_is_equal(reporter, table0.get(), table3.get());
}
static void test_simpletable(skiatest::Reporter* reporter) {
const int idata[] = { 1, 4, 9, 16, 25, 63 };
int icount = SK_ARRAY_COUNT(idata);
sk_sp<SkDataTable> itable(SkDataTable::MakeCopyArray(idata, sizeof(idata[0]), icount));
REPORTER_ASSERT(reporter, itable->count() == icount);
for (int i = 0; i < icount; ++i) {
size_t size;
REPORTER_ASSERT(reporter, sizeof(int) == itable->atSize(i));
REPORTER_ASSERT(reporter, *itable->atT<int>(i, &size) == idata[i]);
REPORTER_ASSERT(reporter, sizeof(int) == size);
}
}
static void test_vartable(skiatest::Reporter* reporter) {
const char* str[] = {
"", "a", "be", "see", "deigh", "ef", "ggggggggggggggggggggggggggg"
};
int count = SK_ARRAY_COUNT(str);
size_t sizes[SK_ARRAY_COUNT(str)];
for (int i = 0; i < count; ++i) {
sizes[i] = strlen(str[i]) + 1;
}
sk_sp<SkDataTable> table(SkDataTable::MakeCopyArrays((const void*const*)str, sizes, count));
REPORTER_ASSERT(reporter, table->count() == count);
for (int i = 0; i < count; ++i) {
size_t size;
REPORTER_ASSERT(reporter, table->atSize(i) == sizes[i]);
REPORTER_ASSERT(reporter, !strcmp(table->atT<const char>(i, &size),
str[i]));
REPORTER_ASSERT(reporter, size == sizes[i]);
const char* s = table->atStr(i);
REPORTER_ASSERT(reporter, strlen(s) == strlen(str[i]));
}
}
static void test_globaltable(skiatest::Reporter* reporter) {
static const int gData[] = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
};
int count = SK_ARRAY_COUNT(gData);
sk_sp<SkDataTable> table(
SkDataTable::MakeArrayProc(gData, sizeof(gData[0]), count, nullptr, nullptr));
REPORTER_ASSERT(reporter, table->count() == count);
for (int i = 0; i < count; ++i) {
size_t size;
REPORTER_ASSERT(reporter, table->atSize(i) == sizeof(int));
REPORTER_ASSERT(reporter, *table->atT<const char>(i, &size) == i);
REPORTER_ASSERT(reporter, sizeof(int) == size);
}
}
DEF_TEST(DataTable, reporter) {
test_emptytable(reporter);
test_simpletable(reporter);
test_vartable(reporter);
test_globaltable(reporter);
}
static void* gGlobal;
static void delete_int_proc(const void* ptr, void* context) {
int* data = (int*)ptr;
SkASSERT(context == gGlobal);
delete[] data;
}
static void assert_len(skiatest::Reporter* reporter, const sk_sp<SkData>& ref, size_t len) {
REPORTER_ASSERT(reporter, ref->size() == len);
}
static void assert_data(skiatest::Reporter* reporter, const sk_sp<SkData>& ref,
const void* data, size_t len) {
REPORTER_ASSERT(reporter, ref->size() == len);
REPORTER_ASSERT(reporter, !memcmp(ref->data(), data, len));
}
static void test_cstring(skiatest::Reporter* reporter) {
const char str[] = "Hello world";
size_t len = strlen(str);
sk_sp<SkData> r0(SkData::MakeWithCopy(str, len + 1));
sk_sp<SkData> r1(SkData::MakeWithCString(str));
REPORTER_ASSERT(reporter, r0->equals(r1.get()));
sk_sp<SkData> r2(SkData::MakeWithCString(nullptr));
REPORTER_ASSERT(reporter, 1 == r2->size());
REPORTER_ASSERT(reporter, 0 == *r2->bytes());
}
static void test_files(skiatest::Reporter* reporter) {
SkString tmpDir = skiatest::GetTmpDir();
if (tmpDir.isEmpty()) {
return;
}
SkString path = SkOSPath::Join(tmpDir.c_str(), "data_test");
const char s[] = "abcdefghijklmnopqrstuvwxyz";
{
SkFILEWStream writer(path.c_str());
if (!writer.isValid()) {
ERRORF(reporter, "Failed to create tmp file %s\n", path.c_str());
return;
}
writer.write(s, 26);
}
FILE* file = sk_fopen(path.c_str(), kRead_SkFILE_Flag);
sk_sp<SkData> r1(SkData::MakeFromFILE(file));
REPORTER_ASSERT(reporter, r1.get() != nullptr);
REPORTER_ASSERT(reporter, r1->size() == 26);
REPORTER_ASSERT(reporter, strncmp(static_cast<const char*>(r1->data()), s, 26) == 0);
int fd = sk_fileno(file);
sk_sp<SkData> r2(SkData::MakeFromFD(fd));
REPORTER_ASSERT(reporter, r2.get() != nullptr);
REPORTER_ASSERT(reporter, r2->size() == 26);
REPORTER_ASSERT(reporter, strncmp(static_cast<const char*>(r2->data()), s, 26) == 0);
}
DEF_TEST(Data, reporter) {
const char* str = "We the people, in order to form a more perfect union.";
const int N = 10;
sk_sp<SkData> r0(SkData::MakeEmpty());
sk_sp<SkData> r1(SkData::MakeWithCopy(str, strlen(str)));
sk_sp<SkData> r2(SkData::MakeWithProc(new int[N], N*sizeof(int), delete_int_proc, gGlobal));
sk_sp<SkData> r3(SkData::MakeSubset(r1.get(), 7, 6));
assert_len(reporter, r0, 0);
assert_len(reporter, r1, strlen(str));
assert_len(reporter, r2, N * sizeof(int));
assert_len(reporter, r3, 6);
assert_data(reporter, r1, str, strlen(str));
assert_data(reporter, r3, "people", 6);
sk_sp<SkData> tmp(SkData::MakeSubset(r1.get(), strlen(str), 10));
assert_len(reporter, tmp, 0);
tmp = SkData::MakeSubset(r1.get(), 0, 0);
assert_len(reporter, tmp, 0);
test_cstring(reporter);
test_files(reporter);
}
DEF_TEST(Data_empty, reporter) {
sk_sp<SkData> array[] = {
SkData::MakeEmpty(),
SkData::MakeUninitialized(0),
SkData::MakeFromMalloc(sk_malloc_throw(0), 0),
SkData::MakeWithCopy("", 0),
SkData::MakeWithProc(nullptr, 0, [](const void*, void*){}, nullptr),
SkData::MakeWithoutCopy(nullptr, 0),
};
constexpr int N = SK_ARRAY_COUNT(array);
for (int i = 0; i < N; ++i) {
REPORTER_ASSERT(reporter, array[i]->size() == 0);
for (int j = 0; j < N; ++j) {
REPORTER_ASSERT(reporter, array[i]->equals(array[j].get()));
}
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
const char gABC[] = "abcdefghijklmnopqrstuvwxyz";
static void check_abcs(skiatest::Reporter* reporter, const char buffer[], size_t size) {
REPORTER_ASSERT(reporter, size % 26 == 0);
for (size_t offset = 0; offset < size; offset += 26) {
REPORTER_ASSERT(reporter, !memcmp(&buffer[offset], gABC, 26));
}
}
// stream should contain an integral number of copies of gABC.
static void check_alphabet_stream(skiatest::Reporter* reporter, SkStream* stream) {
REPORTER_ASSERT(reporter, stream->hasLength());
size_t size = stream->getLength();
REPORTER_ASSERT(reporter, size % 26 == 0);
SkAutoTMalloc<char> storage(size);
char* array = storage.get();
size_t bytesRead = stream->read(array, size);
REPORTER_ASSERT(reporter, bytesRead == size);
check_abcs(reporter, array, size);
// try checking backwards
for (size_t offset = size; offset > 0; offset -= 26) {
REPORTER_ASSERT(reporter, stream->seek(offset - 26));
REPORTER_ASSERT(reporter, stream->getPosition() == offset - 26);
REPORTER_ASSERT(reporter, stream->read(array, 26) == 26);
check_abcs(reporter, array, 26);
REPORTER_ASSERT(reporter, stream->getPosition() == offset);
}
}
// reader should contains an integral number of copies of gABC.
static void check_alphabet_buffer(skiatest::Reporter* reporter, const SkROBuffer* reader) {
size_t size = reader->size();
REPORTER_ASSERT(reporter, size % 26 == 0);
SkAutoTMalloc<char> storage(size);
SkROBuffer::Iter iter(reader);
size_t offset = 0;
do {
SkASSERT(offset + iter.size() <= size);
memcpy(storage.get() + offset, iter.data(), iter.size());
offset += iter.size();
} while (iter.next());
REPORTER_ASSERT(reporter, offset == size);
check_abcs(reporter, storage.get(), size);
}
DEF_TEST(RWBuffer, reporter) {
// Knowing that the default capacity is 4096, choose N large enough so we force it to use
// multiple buffers internally.
static constexpr int N = 1000;
SkSTArray<N, sk_sp<SkROBuffer>> readers;
SkSTArray<N, std::unique_ptr<SkStream>> streams;
{
SkRWBuffer buffer;
for (int i = 0; i < N; ++i) {
buffer.append(gABC, 26);
readers.push_back(buffer.makeROBufferSnapshot());
streams.push_back(buffer.makeStreamSnapshot());
}
REPORTER_ASSERT(reporter, N*26 == buffer.size());
}
// Verify that although the SkRWBuffer's destructor has run, the readers are still valid.
for (int i = 0; i < N; ++i) {
REPORTER_ASSERT(reporter, (i + 1) * 26U == readers[i]->size());
check_alphabet_buffer(reporter, readers[i].get());
check_alphabet_stream(reporter, streams[i].get());
}
}
DEF_TEST(RWBuffer_threaded, reporter) {
// Knowing that the default capacity is 4096, choose N large enough so we force it to use
// multiple buffers internally.
const int N = 1000;
SkTaskGroup tasks;
SkRWBuffer buffer;
for (int i = 0; i < N; ++i) {
buffer.append(gABC, 26);
sk_sp<SkROBuffer> reader = buffer.makeROBufferSnapshot();
SkStream* stream = buffer.makeStreamSnapshot().release();
REPORTER_ASSERT(reporter, reader->size() == buffer.size());
REPORTER_ASSERT(reporter, stream->getLength() == buffer.size());
// reader's copy constructor will ref the SkROBuffer, which will be unreffed
// when the task ends.
// Ownership of stream is passed to the task, which will delete it.
tasks.add([reporter, i, reader, stream] {
REPORTER_ASSERT(reporter, (i + 1) * 26U == reader->size());
REPORTER_ASSERT(reporter, stream->getLength() == reader->size());
check_alphabet_buffer(reporter, reader.get());
check_alphabet_stream(reporter, stream);
REPORTER_ASSERT(reporter, stream->rewind());
delete stream;
});
}
REPORTER_ASSERT(reporter, N*26 == buffer.size());
tasks.wait();
}
// Tests that it is safe to call SkROBuffer::Iter::size() when exhausted.
DEF_TEST(RWBuffer_size, r) {
SkRWBuffer buffer;
buffer.append(gABC, 26);
sk_sp<SkROBuffer> roBuffer(buffer.makeROBufferSnapshot());
SkROBuffer::Iter iter(roBuffer.get());
REPORTER_ASSERT(r, iter.data());
REPORTER_ASSERT(r, iter.size() == 26);
// There is only one block in this buffer.
REPORTER_ASSERT(r, !iter.next());
REPORTER_ASSERT(r, 0 == iter.size());
}
// Tests that operations (including the destructor) are safe on an SkRWBuffer
// without any data appended.
DEF_TEST(RWBuffer_noAppend, r) {
SkRWBuffer buffer;
REPORTER_ASSERT(r, 0 == buffer.size());
sk_sp<SkROBuffer> roBuffer = buffer.makeROBufferSnapshot();
REPORTER_ASSERT(r, roBuffer);
if (roBuffer) {
REPORTER_ASSERT(r, roBuffer->size() == 0);
SkROBuffer::Iter iter(roBuffer.get());
REPORTER_ASSERT(r, iter.size() == 0);
REPORTER_ASSERT(r, !iter.data());
REPORTER_ASSERT(r, !iter.next());
}
std::unique_ptr<SkStream> stream(buffer.makeStreamSnapshot());
REPORTER_ASSERT(r, stream);
if (stream) {
REPORTER_ASSERT(r, stream->hasLength());
REPORTER_ASSERT(r, stream->getLength() == 0);
REPORTER_ASSERT(r, stream->skip(10) == 0);
}
}
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