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[core] Add unit test for ImageManager::reduceMemoryUsage

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This commit is contained in:
Alexander Shalamov
2019-04-23 09:42:31 +02:00
parent 83c33cdeb2
commit f5773adcce
1 changed files with 60 additions and 1 deletions
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61
test/renderer/image_manager.test.cpp
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@@ -164,8 +164,10 @@ TEST(ImageManager, NotifiesRequestorImmediatelyIfDependenciesAreSatisfied) {
class StubImageManagerObserver : public ImageManagerObserver {
public:
int count = 0;
virtual void onStyleImageMissing(const std::string&, std::function<void()> done) override {
std::function<void (const std::string&)> imageMissing = [](const std::string&){};
virtual void onStyleImageMissing(const std::string& id, std::function<void()> done) override {
count++;
imageMissing(id);
done();
}
};
@@ -234,3 +236,60 @@ TEST(ImageManager, OnStyleImageMissingAfterSpriteLoaded) {
EXPECT_EQ(observer.count, 1);
ASSERT_TRUE(notified);
}
TEST(ImageManager, ReduceMemoryUsage) {
ImageManager imageManager;
StubImageManagerObserver observer;
observer.imageMissing = [&imageManager] (const std::string& id) {
imageManager.addImage(makeMutable<style::Image::Impl>(id, PremultipliedImage({ 16, 16 }), 1));
};
imageManager.setObserver(&observer);
imageManager.setLoaded(true);
// Single requestor
{
std::unique_ptr<StubImageRequestor> requestor = std::make_unique<StubImageRequestor>(imageManager);
imageManager.getImages(*requestor, std::make_pair(ImageDependencies{{"missing", ImageType::Icon}}, 0ull));
EXPECT_EQ(observer.count, 1);
ASSERT_FALSE(imageManager.getImage("missing") == nullptr);
}
// Reduce memory usage and check that unused image was deleted.
imageManager.reduceMemoryUse();
ASSERT_TRUE(imageManager.getImage("missing") == nullptr);
// Multiple requestors
{
std::unique_ptr<StubImageRequestor> requestor1 = std::make_unique<StubImageRequestor>(imageManager);
std::unique_ptr<StubImageRequestor> requestor2 = std::make_unique<StubImageRequestor>(imageManager);
imageManager.getImages(*requestor1, std::make_pair(ImageDependencies{{"missing", ImageType::Icon}}, 0ull));
imageManager.getImages(*requestor2, std::make_pair(ImageDependencies{{"missing", ImageType::Icon}}, 1ull));
EXPECT_EQ(observer.count, 2);
ASSERT_FALSE(imageManager.getImage("missing") == nullptr);
}
// Reduce memory usage and check that unused image was deleted when all requestors are destructed.
imageManager.reduceMemoryUse();
ASSERT_TRUE(imageManager.getImage("missing") == nullptr);
// Multiple requestors, check that image resource is not destroyed if there is at least 1 requestor that uses it.
std::unique_ptr<StubImageRequestor> requestor = std::make_unique<StubImageRequestor>(imageManager);
{
std::unique_ptr<StubImageRequestor> requestor1 = std::make_unique<StubImageRequestor>(imageManager);
imageManager.getImages(*requestor, std::make_pair(ImageDependencies{{"missing", ImageType::Icon}}, 0ull));
imageManager.getImages(*requestor1, std::make_pair(ImageDependencies{{"missing", ImageType::Icon}}, 1ull));
EXPECT_EQ(observer.count, 3);
ASSERT_FALSE(imageManager.getImage("missing") == nullptr);
}
// Reduce memory usage and check that requested image is not destructed.
imageManager.reduceMemoryUse();
ASSERT_FALSE(imageManager.getImage("missing") == nullptr);
// Release last requestor and check if resource was released after reduceMemoryUse().
requestor.reset();
imageManager.reduceMemoryUse();
ASSERT_TRUE(imageManager.getImage("missing") == nullptr);
}