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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/feature_engagement/internal/in_memory_event_store.h"
#include <memory>
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/run_loop.h"
#include "base/test/task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace feature_engagement {
namespace {
class InMemoryEventStoreTest : public ::testing::Test {
public:
InMemoryEventStoreTest()
: load_callback_has_been_invoked_(false), last_result_(false) {}
void LoadCallback(bool success, std::unique_ptr<std::vector<Event>> events) {
load_callback_has_been_invoked_ = true;
last_result_ = success;
loaded_events_ = std::move(events);
}
protected:
bool load_callback_has_been_invoked_;
bool last_result_;
std::unique_ptr<std::vector<Event>> loaded_events_;
base::test::SingleThreadTaskEnvironment task_environment_;
};
} // namespace
TEST_F(InMemoryEventStoreTest, LoadShouldProvideEventsAsCallback) {
std::unique_ptr<std::vector<Event>> events =
std::make_unique<std::vector<Event>>();
Event foo;
Event bar;
events->push_back(foo);
events->push_back(bar);
// Create a new store and verify it's not ready yet.
InMemoryEventStore store(std::move(events));
EXPECT_FALSE(store.IsReady());
// Load the data and ensure the callback is not immediately invoked, since the
// result should be posted.
store.Load(base::BindOnce(&InMemoryEventStoreTest::LoadCallback,
base::Unretained(this)));
EXPECT_FALSE(load_callback_has_been_invoked_);
// Run the message loop until it's idle to finish to ensure the result is
// available.
base::RunLoop().RunUntilIdle();
// The two events should have been loaded, and the store should be ready.
EXPECT_TRUE(load_callback_has_been_invoked_);
EXPECT_TRUE(store.IsReady());
EXPECT_EQ(2u, loaded_events_->size());
EXPECT_TRUE(last_result_);
}
} // namespace feature_engagement
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