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/*
* Copyright 2012 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"
// This is a GR test
#if SK_SUPPORT_GPU
#include "GrTHashTable.h"
struct HashElement {
int fKey;
int fValue;
};
class GrFindPositivesFunctor {
public:
// only return elements with positive values
bool operator()(const HashElement* elem) const {
return elem->fValue > 0;
}
};
class GrFindNegativesFunctor {
public:
// only return elements with negative values
bool operator()(const HashElement* elem) const {
return elem->fValue < 0;
}
};
class HashKey {
public:
HashKey(int key) : fKey(key) {}
uint32_t getHash() const { return fKey; }
static bool LessThan(const HashElement& entry, const HashKey& key) {
return entry.fKey < key.fKey;
}
static bool Equals(const HashElement& entry, const HashKey& key) {
return entry.fKey == key.fKey;
}
#ifdef SK_DEBUG
static bool LessThan(const HashElement& a, const HashElement& b) {
return a.fKey < b.fKey;
}
static bool Equals(const HashElement& a, const HashElement& b) {
return a.fKey == b.fKey;
}
#endif
protected:
int fKey;
};
DEF_TEST(HashCache, reporter) {
GrTHashTable<HashElement, HashKey, 4> cache;
HashElement negHashElements[10] = {
{ 0, 0 },
{ 1, -1 },
{ 2, -2 },
{ 3, -3 },
{ 4, -4 },
{ 5, -5 },
{ 6, -6 },
{ 7, -7 },
{ 8, -8 },
{ 9, -9 }
};
HashElement posHashElements[10] = {
{ 0, 0 },
{ 1, 1 },
{ 2, 2 },
{ 3, 3 },
{ 4, 4 },
{ 5, 5 },
{ 6, 6 },
{ 7, 7 },
{ 8, 8 },
{ 9, 9 }
};
// add i: -i pairs
for (int i = 0; i < 10; ++i) {
cache.insert(HashKey(i), &negHashElements[i]);
}
REPORTER_ASSERT(reporter, 10 == cache.count());
// look for all i's and assert we found the -i's
for (int i = 0; i < 10; ++i) {
HashElement* found = cache.find(i);
REPORTER_ASSERT(reporter, NULL != found && -i == found->fValue);
}
// look for something not in the cache
{
HashElement* found = cache.find(10);
REPORTER_ASSERT(reporter, NULL == found);
}
// add i:i duplicates (so each i will have a positive & negative entry)
for (int i = 0; i < 10; ++i) {
cache.insert(i, &posHashElements[i]);
}
REPORTER_ASSERT(reporter, 20 == cache.count());
// test out the find functor to find all the positive values
{
GrFindPositivesFunctor findPos;
HashElement* found = cache.find(0, findPos);
REPORTER_ASSERT(reporter, NULL == found);
for (int i = 1; i < 10; ++i) {
found = cache.find(i, findPos);
REPORTER_ASSERT(reporter, NULL != found && found->fValue > 0);
}
}
// make sure finding the positives wasn't a fluke - find the negatives
{
GrFindNegativesFunctor findNeg;
HashElement* found = cache.find(0, findNeg);
REPORTER_ASSERT(reporter, NULL == found);
for (int i = 1; i < 10; ++i) {
found = cache.find(i, findNeg);
REPORTER_ASSERT(reporter, NULL != found && found->fValue < 0);
}
}
// remove the 0:0 entries
{
cache.remove(0, &negHashElements[0]);
cache.remove(0, &posHashElements[0]);
REPORTER_ASSERT(reporter, 18 == cache.count());
HashElement* found = cache.find(0);
REPORTER_ASSERT(reporter, NULL == found);
}
}
#endif
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