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/*
* Copyright 2011 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* version 3 along with this program. If not, see
* <http://www.gnu.org/licenses/>
*
* Authored by: Tim Penhey <tim.penhey@canonical.com>
*/
#include <gmock/gmock.h>
#include "TextureCache.h"
using namespace testing;
using namespace unity;
namespace
{
typedef nux::BaseTexture* (*TextureCallBack)(std::string const&, int, int);
TEST(TestTextureCache, TestInitiallyEmpty)
{
TextureCache& cache = TextureCache::GetDefault();
EXPECT_THAT(cache.Size(), Eq(0));
}
struct TextureCallbackValues
{
std::string id;
int width;
int height;
TextureCallbackValues() : width(0), height(0) {}
nux::BaseTexture* callback(std::string const& i, int w, int h) {
id = i;
width = w;
height = h;
return nux::GetGraphicsDisplay()->GetGpuDevice()->CreateSystemCapableTexture();
}
};
TEST(TestTextureCache, TestCallsCreateTextureCallback)
{
// Another lambda issue. If the lambda takes a reference to any other
// variables, it seems incapable of assigning the function to the
// TextureCallback type.
TextureCallbackValues values;
TextureCache& cache = TextureCache::GetDefault();
TextureCache::CreateTextureCallback callback(sigc::mem_fun(values, &TextureCallbackValues::callback));
nux::ObjectPtr<nux::BaseTexture> texture = cache.FindTexture("foo", 5, 7, callback);
EXPECT_THAT(cache.Size(), Eq(1));
EXPECT_THAT(values.id, Eq("foo"));
EXPECT_THAT(values.width, Eq(5));
EXPECT_THAT(values.height, Eq(7));
EXPECT_THAT(texture->GetReferenceCount(), Eq(1));
}
struct TextureCallbackCounter
{
int count;
TextureCallbackCounter() : count(0) {}
nux::BaseTexture* callback(std::string const& i, int w, int h) {
++count;
return nux::GetGraphicsDisplay()->GetGpuDevice()->CreateSystemCapableTexture();
}
};
TEST(TestTextureCache, TestCallbackOnlyCalledOnce)
{
TextureCallbackCounter counter;
TextureCache::CreateTextureCallback callback(sigc::mem_fun(counter, &TextureCallbackCounter::callback));
TextureCache& cache = TextureCache::GetDefault();
nux::ObjectPtr<nux::BaseTexture> t1 = cache.FindTexture("foo", 5, 7, callback);
nux::ObjectPtr<nux::BaseTexture> t2 = cache.FindTexture("foo", 5, 7, callback);
EXPECT_THAT(cache.Size(), Eq(1));
EXPECT_THAT(counter.count, Eq(1));
EXPECT_EQ(t1, t2);
}
TEST(TestTextureCache, TestCacheRemovesDeletedObject)
{
// Note for others, if just using the lambda function, the return value is
// lost in the type deduction that sigc uses. So we have the typedef
// (TextureCallback) at the top which includes the return value. The lambda
// constructor is fine to assign into this as it knows, and the explicit
// return type is good for sigc.
TextureCallBack callback =
[](std::string const& i, int w, int h) -> nux::BaseTexture*
{
return nux::GetGraphicsDisplay()->GetGpuDevice()->CreateSystemCapableTexture();
};
TextureCache& cache = TextureCache::GetDefault();
nux::ObjectPtr<nux::BaseTexture> t1 = cache.FindTexture("foo", 5, 7, callback);
// Now delete the only reference to the texture.
t1 = nux::ObjectPtr<nux::BaseTexture>();
EXPECT_THAT(cache.Size(), Eq(0));
}
TEST(TestTextureCache, Invalidate)
{
TextureCallbackCounter counter;
TextureCache::CreateTextureCallback callback(sigc::mem_fun(counter, &TextureCallbackCounter::callback));
TextureCache& cache = TextureCache::GetDefault();
nux::ObjectPtr<nux::BaseTexture> t1 = cache.FindTexture("foo", 5, 7, callback);
cache.Invalidate("foo", 5, 7);
ASSERT_EQ(0, cache.Size());
nux::ObjectPtr<nux::BaseTexture> t2 = cache.FindTexture("foo", 5, 7, callback);
EXPECT_NE(t1, t2);
EXPECT_EQ(1, cache.Size());
EXPECT_EQ(2, counter.count);
}
}
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