tests/DataRefTest.cpp - platform/external/skqp - Gitiles


 /*
  * 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 "SkData.h"
 #include "SkDataSet.h"
 #include "SkDataTable.h"
 #include "SkOrderedReadBuffer.h"
 #include "SkOrderedWriteBuffer.h"
 #include "SkOSFile.h"
 #include "SkStream.h"

 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_flatten(skiatest::Reporter* reporter,
                                    SkDataTable* table) {
     SkOrderedWriteBuffer wb(1024);
     wb.writeFlattenable(table);

     size_t wsize = wb.size();
     SkAutoMalloc storage(wsize);
     wb.writeToMemory(storage.get());

     SkOrderedReadBuffer rb(storage.get(), wsize);
     SkAutoTUnref<SkDataTable> newTable((SkDataTable*)rb.readFlattenable());

     test_is_equal(reporter, table, newTable);
 }

 static void test_datatable_is_empty(skiatest::Reporter* reporter,
                                     SkDataTable* table) {
     REPORTER_ASSERT(reporter, table->isEmpty());
     REPORTER_ASSERT(reporter, 0 == table->count());
     test_datatable_flatten(reporter, table);
 }

 static void test_emptytable(skiatest::Reporter* reporter) {
     SkAutoTUnref<SkDataTable> table0(SkDataTable::NewEmpty());
     SkAutoTUnref<SkDataTable> table1(SkDataTable::NewCopyArrays(NULL, NULL, 0));
     SkAutoTUnref<SkDataTable> table2(SkDataTable::NewCopyArray(NULL, 0, 0));
     SkAutoTUnref<SkDataTable> table3(SkDataTable::NewArrayProc(NULL, 0, 0,
                                                                NULL, NULL));

     test_datatable_is_empty(reporter, table0);
     test_datatable_is_empty(reporter, table1);
     test_datatable_is_empty(reporter, table2);
     test_datatable_is_empty(reporter, table3);

     test_is_equal(reporter, table0, table1);
     test_is_equal(reporter, table0, table2);
     test_is_equal(reporter, table0, table3);
 }

 static void test_simpletable(skiatest::Reporter* reporter) {
     const int idata[] = { 1, 4, 9, 16, 25, 63 };
     int icount = SK_ARRAY_COUNT(idata);
     SkAutoTUnref<SkDataTable> itable(SkDataTable::NewCopyArray(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);
     }
     test_datatable_flatten(reporter, itable);
 }

 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;
     }

     SkAutoTUnref<SkDataTable> table(SkDataTable::NewCopyArrays(
                                         (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]));
     }
     test_datatable_flatten(reporter, table);
 }

 static void test_tablebuilder(skiatest::Reporter* reporter) {
     const char* str[] = {
         "", "a", "be", "see", "deigh", "ef", "ggggggggggggggggggggggggggg"
     };
     int count = SK_ARRAY_COUNT(str);

     SkDataTableBuilder builder(16);

     for (int i = 0; i < count; ++i) {
         builder.append(str[i], strlen(str[i]) + 1);
     }
     SkAutoTUnref<SkDataTable> table(builder.detachDataTable());

     REPORTER_ASSERT(reporter, table->count() == count);
     for (int i = 0; i < count; ++i) {
         size_t size;
         REPORTER_ASSERT(reporter, table->atSize(i) == strlen(str[i]) + 1);
         REPORTER_ASSERT(reporter, !strcmp(table->atT<const char>(i, &size),
                                           str[i]));
         REPORTER_ASSERT(reporter, size == strlen(str[i]) + 1);

         const char* s = table->atStr(i);
         REPORTER_ASSERT(reporter, strlen(s) == strlen(str[i]));
     }
     test_datatable_flatten(reporter, table);
 }

 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);

     SkAutoTUnref<SkDataTable> table(SkDataTable::NewArrayProc(gData,
                                           sizeof(gData[0]), count, NULL, NULL));

     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);
     }
     test_datatable_flatten(reporter, table);
 }

 static void TestDataTable(skiatest::Reporter* reporter) {
     test_emptytable(reporter);
     test_simpletable(reporter);
     test_vartable(reporter);
     test_tablebuilder(reporter);
     test_globaltable(reporter);
 }

 static void unrefAll(const SkDataSet::Pair pairs[], int count) {
     for (int i = 0; i < count; ++i) {
         pairs[i].fValue->unref();
     }
 }

 // asserts that inner is a subset of outer
 static void test_dataset_subset(skiatest::Reporter* reporter,
                                 const SkDataSet& outer, const SkDataSet& inner) {
     SkDataSet::Iter iter(inner);
     for (; !iter.done(); iter.next()) {
         SkData* outerData = outer.find(iter.key());
         REPORTER_ASSERT(reporter, outerData);
         REPORTER_ASSERT(reporter, outerData->equals(iter.value()));
     }
 }

 static void test_datasets_equal(skiatest::Reporter* reporter,
                                 const SkDataSet& ds0, const SkDataSet& ds1) {
     REPORTER_ASSERT(reporter, ds0.count() == ds1.count());

     test_dataset_subset(reporter, ds0, ds1);
     test_dataset_subset(reporter, ds1, ds0);
 }

 static void test_dataset(skiatest::Reporter* reporter, const SkDataSet& ds,
                          int count) {
     REPORTER_ASSERT(reporter, ds.count() == count);

     SkDataSet::Iter iter(ds);
     int index = 0;
     for (; !iter.done(); iter.next()) {
 //        const char* name = iter.key();
 //        SkData* data = iter.value();
 //        SkDebugf("[%d] %s:%s\n", index, name, (const char*)data->bytes());
         index += 1;
     }
     REPORTER_ASSERT(reporter, index == count);

     SkDynamicMemoryWStream ostream;
     ds.writeToStream(&ostream);
     SkMemoryStream istream;
     istream.setData(ostream.copyToData())->unref();
     SkDataSet copy(&istream);

     test_datasets_equal(reporter, ds, copy);
 }

 static void test_dataset(skiatest::Reporter* reporter) {
     SkDataSet set0(NULL, 0);
     SkDataSet set1("hello", SkAutoTUnref<SkData>(SkData::NewWithCString("world")));

     const SkDataSet::Pair pairs[] = {
         { "one", SkData::NewWithCString("1") },
         { "two", SkData::NewWithCString("2") },
         { "three", SkData::NewWithCString("3") },
     };
     SkDataSet set3(pairs, 3);
     unrefAll(pairs, 3);

     test_dataset(reporter, set0, 0);
     test_dataset(reporter, set1, 1);
     test_dataset(reporter, set3, 3);
 }

 static void* gGlobal;

 static void delete_int_proc(const void* ptr, size_t len, void* context) {
     int* data = (int*)ptr;
     SkASSERT(context == gGlobal);
     delete[] data;
 }

 static void assert_len(skiatest::Reporter* reporter, SkData* ref, size_t len) {
     REPORTER_ASSERT(reporter, ref->size() == len);
 }

 static void assert_data(skiatest::Reporter* reporter, 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);

     SkAutoTUnref<SkData> r0(SkData::NewWithCopy(str, len + 1));
     SkAutoTUnref<SkData> r1(SkData::NewWithCString(str));

     REPORTER_ASSERT(reporter, r0->equals(r1));

     SkAutoTUnref<SkData> r2(SkData::NewWithCString(NULL));
     REPORTER_ASSERT(reporter, 1 == r2->size());
     REPORTER_ASSERT(reporter, 0 == *r2->bytes());
 }

 static void test_files(skiatest::Reporter* reporter) {
     SkString tmpDir = skiatest::Test::GetTmpDir();
     if (tmpDir.isEmpty()) {
         return;
     }

     SkString path = SkOSPath::SkPathJoin(tmpDir.c_str(), "data_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);
             return;
         }
         writer.write(s, 26);
     }

     SkFILE* file = sk_fopen(path.c_str(), kRead_SkFILE_Flag);
     SkAutoTUnref<SkData> r1(SkData::NewFromFILE(file));
     REPORTER_ASSERT(reporter, r1.get() != NULL);
     REPORTER_ASSERT(reporter, r1->size() == 26);
     REPORTER_ASSERT(reporter, strncmp(static_cast<const char*>(r1->data()), s, 26) == 0);

     int fd = sk_fileno(file);
     SkAutoTUnref<SkData> r2(SkData::NewFromFD(fd));
     REPORTER_ASSERT(reporter, r2.get() != NULL);
     REPORTER_ASSERT(reporter, r2->size() == 26);
     REPORTER_ASSERT(reporter, strncmp(static_cast<const char*>(r2->data()), s, 26) == 0);
 }

 static void TestData(skiatest::Reporter* reporter) {
     const char* str = "We the people, in order to form a more perfect union.";
     const int N = 10;

     SkAutoTUnref<SkData> r0(SkData::NewEmpty());
     SkAutoTUnref<SkData> r1(SkData::NewWithCopy(str, strlen(str)));
     SkAutoTUnref<SkData> r2(SkData::NewWithProc(new int[N], N*sizeof(int),
                                            delete_int_proc, gGlobal));
     SkAutoTUnref<SkData> r3(SkData::NewSubset(r1, 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);

     SkData* tmp = SkData::NewSubset(r1, strlen(str), 10);
     assert_len(reporter, tmp, 0);
     tmp->unref();
     tmp = SkData::NewSubset(r1, 0, 0);
     assert_len(reporter, tmp, 0);
     tmp->unref();

     test_cstring(reporter);
     test_dataset(reporter);
     test_files(reporter);
 }

 #include "TestClassDef.h"
 DEFINE_TESTCLASS("Data", DataTestClass, TestData)
 DEFINE_TESTCLASS("DataTable", DataTableTestClass, TestDataTable)

	/*
	* 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 "SkData.h"
	#include "SkDataSet.h"
	#include "SkDataTable.h"
	#include "SkOrderedReadBuffer.h"
	#include "SkOrderedWriteBuffer.h"
	#include "SkOSFile.h"
	#include "SkStream.h"

	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_flatten(skiatest::Reporter* reporter,
	SkDataTable* table) {
	SkOrderedWriteBuffer wb(1024);
	wb.writeFlattenable(table);

	size_t wsize = wb.size();
	SkAutoMalloc storage(wsize);
	wb.writeToMemory(storage.get());

	SkOrderedReadBuffer rb(storage.get(), wsize);
	SkAutoTUnref<SkDataTable> newTable((SkDataTable*)rb.readFlattenable());

	test_is_equal(reporter, table, newTable);
	}

	static void test_datatable_is_empty(skiatest::Reporter* reporter,
	SkDataTable* table) {
	REPORTER_ASSERT(reporter, table->isEmpty());
	REPORTER_ASSERT(reporter, 0 == table->count());
	test_datatable_flatten(reporter, table);
	}

	static void test_emptytable(skiatest::Reporter* reporter) {
	SkAutoTUnref<SkDataTable> table0(SkDataTable::NewEmpty());
	SkAutoTUnref<SkDataTable> table1(SkDataTable::NewCopyArrays(NULL, NULL, 0));
	SkAutoTUnref<SkDataTable> table2(SkDataTable::NewCopyArray(NULL, 0, 0));
	SkAutoTUnref<SkDataTable> table3(SkDataTable::NewArrayProc(NULL, 0, 0,
	NULL, NULL));

	test_datatable_is_empty(reporter, table0);
	test_datatable_is_empty(reporter, table1);
	test_datatable_is_empty(reporter, table2);
	test_datatable_is_empty(reporter, table3);

	test_is_equal(reporter, table0, table1);
	test_is_equal(reporter, table0, table2);
	test_is_equal(reporter, table0, table3);
	}

	static void test_simpletable(skiatest::Reporter* reporter) {
	const int idata[] = { 1, 4, 9, 16, 25, 63 };
	int icount = SK_ARRAY_COUNT(idata);
	SkAutoTUnref<SkDataTable> itable(SkDataTable::NewCopyArray(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);
	}
	test_datatable_flatten(reporter, itable);
	}

	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;
	}

	SkAutoTUnref<SkDataTable> table(SkDataTable::NewCopyArrays(
	(const voidconst)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]));
	}
	test_datatable_flatten(reporter, table);
	}

	static void test_tablebuilder(skiatest::Reporter* reporter) {
	const char* str[] = {
	"", "a", "be", "see", "deigh", "ef", "ggggggggggggggggggggggggggg"
	};
	int count = SK_ARRAY_COUNT(str);

	SkDataTableBuilder builder(16);

	for (int i = 0; i < count; ++i) {
	builder.append(str[i], strlen(str[i]) + 1);
	}
	SkAutoTUnref<SkDataTable> table(builder.detachDataTable());

	REPORTER_ASSERT(reporter, table->count() == count);
	for (int i = 0; i < count; ++i) {
	size_t size;
	REPORTER_ASSERT(reporter, table->atSize(i) == strlen(str[i]) + 1);
	REPORTER_ASSERT(reporter, !strcmp(table->atT<const char>(i, &size),
	str[i]));
	REPORTER_ASSERT(reporter, size == strlen(str[i]) + 1);

	const char* s = table->atStr(i);
	REPORTER_ASSERT(reporter, strlen(s) == strlen(str[i]));
	}
	test_datatable_flatten(reporter, table);
	}

	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);

	SkAutoTUnref<SkDataTable> table(SkDataTable::NewArrayProc(gData,
	sizeof(gData[0]), count, NULL, NULL));

	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);
	}
	test_datatable_flatten(reporter, table);
	}

	static void TestDataTable(skiatest::Reporter* reporter) {
	test_emptytable(reporter);
	test_simpletable(reporter);
	test_vartable(reporter);
	test_tablebuilder(reporter);
	test_globaltable(reporter);
	}

	static void unrefAll(const SkDataSet::Pair pairs[], int count) {
	for (int i = 0; i < count; ++i) {
	pairs[i].fValue->unref();
	}
	}

	// asserts that inner is a subset of outer
	static void test_dataset_subset(skiatest::Reporter* reporter,
	const SkDataSet& outer, const SkDataSet& inner) {
	SkDataSet::Iter iter(inner);
	for (; !iter.done(); iter.next()) {
	SkData* outerData = outer.find(iter.key());
	REPORTER_ASSERT(reporter, outerData);
	REPORTER_ASSERT(reporter, outerData->equals(iter.value()));
	}
	}

	static void test_datasets_equal(skiatest::Reporter* reporter,
	const SkDataSet& ds0, const SkDataSet& ds1) {
	REPORTER_ASSERT(reporter, ds0.count() == ds1.count());

	test_dataset_subset(reporter, ds0, ds1);
	test_dataset_subset(reporter, ds1, ds0);
	}

	static void test_dataset(skiatest::Reporter* reporter, const SkDataSet& ds,
	int count) {
	REPORTER_ASSERT(reporter, ds.count() == count);

	SkDataSet::Iter iter(ds);
	int index = 0;
	for (; !iter.done(); iter.next()) {
	// const char* name = iter.key();
	// SkData* data = iter.value();
	// SkDebugf("[%d] %s:%s\n", index, name, (const char*)data->bytes());
	index += 1;
	}
	REPORTER_ASSERT(reporter, index == count);

	SkDynamicMemoryWStream ostream;
	ds.writeToStream(&ostream);
	SkMemoryStream istream;
	istream.setData(ostream.copyToData())->unref();
	SkDataSet copy(&istream);

	test_datasets_equal(reporter, ds, copy);
	}

	static void test_dataset(skiatest::Reporter* reporter) {
	SkDataSet set0(NULL, 0);
	SkDataSet set1("hello", SkAutoTUnref<SkData>(SkData::NewWithCString("world")));

	const SkDataSet::Pair pairs[] = {
	{ "one", SkData::NewWithCString("1") },
	{ "two", SkData::NewWithCString("2") },
	{ "three", SkData::NewWithCString("3") },
	};
	SkDataSet set3(pairs, 3);
	unrefAll(pairs, 3);

	test_dataset(reporter, set0, 0);
	test_dataset(reporter, set1, 1);
	test_dataset(reporter, set3, 3);
	}

	static void* gGlobal;

	static void delete_int_proc(const void* ptr, size_t len, void* context) {
	int* data = (int*)ptr;
	SkASSERT(context == gGlobal);
	delete[] data;
	}

	static void assert_len(skiatest::Reporter* reporter, SkData* ref, size_t len) {
	REPORTER_ASSERT(reporter, ref->size() == len);
	}

	static void assert_data(skiatest::Reporter* reporter, 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);

	SkAutoTUnref<SkData> r0(SkData::NewWithCopy(str, len + 1));
	SkAutoTUnref<SkData> r1(SkData::NewWithCString(str));

	REPORTER_ASSERT(reporter, r0->equals(r1));

	SkAutoTUnref<SkData> r2(SkData::NewWithCString(NULL));
	REPORTER_ASSERT(reporter, 1 == r2->size());
	REPORTER_ASSERT(reporter, 0 == *r2->bytes());
	}

	static void test_files(skiatest::Reporter* reporter) {
	SkString tmpDir = skiatest::Test::GetTmpDir();
	if (tmpDir.isEmpty()) {
	return;
	}

	SkString path = SkOSPath::SkPathJoin(tmpDir.c_str(), "data_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);
	return;
	}
	writer.write(s, 26);
	}

	SkFILE* file = sk_fopen(path.c_str(), kRead_SkFILE_Flag);
	SkAutoTUnref<SkData> r1(SkData::NewFromFILE(file));
	REPORTER_ASSERT(reporter, r1.get() != NULL);
	REPORTER_ASSERT(reporter, r1->size() == 26);
	REPORTER_ASSERT(reporter, strncmp(static_cast<const char*>(r1->data()), s, 26) == 0);

	int fd = sk_fileno(file);
	SkAutoTUnref<SkData> r2(SkData::NewFromFD(fd));
	REPORTER_ASSERT(reporter, r2.get() != NULL);
	REPORTER_ASSERT(reporter, r2->size() == 26);
	REPORTER_ASSERT(reporter, strncmp(static_cast<const char*>(r2->data()), s, 26) == 0);
	}

	static void TestData(skiatest::Reporter* reporter) {
	const char* str = "We the people, in order to form a more perfect union.";
	const int N = 10;

	SkAutoTUnref<SkData> r0(SkData::NewEmpty());
	SkAutoTUnref<SkData> r1(SkData::NewWithCopy(str, strlen(str)));
	SkAutoTUnref<SkData> r2(SkData::NewWithProc(new int[N], N*sizeof(int),
	delete_int_proc, gGlobal));
	SkAutoTUnref<SkData> r3(SkData::NewSubset(r1, 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);

	SkData* tmp = SkData::NewSubset(r1, strlen(str), 10);
	assert_len(reporter, tmp, 0);
	tmp->unref();
	tmp = SkData::NewSubset(r1, 0, 0);
	assert_len(reporter, tmp, 0);
	tmp->unref();

	test_cstring(reporter);
	test_dataset(reporter);
	test_files(reporter);
	}

	#include "TestClassDef.h"
	DEFINE_TESTCLASS("Data", DataTestClass, TestData)
	DEFINE_TESTCLASS("DataTable", DataTableTestClass, TestDataTable)