* Copyright (c) Huawei Technologies Co., Ltd. 2024. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
* Description: test event subscribe - notify mechanism
*/
#include <algorithm>
#include <mutex>
#include "ut/common.h"
#include "datasystem/common/util/event_subscribers.h"
#include "datasystem/common/inject/inject_point.h"
namespace datasystem {
namespace ut {
class EventSubscribersTest : public CommonTest {
public:
Status Execute(int num)
{
result_.emplace_back(num);
return Status::OK();
}
enum EventType1 {EVENT0};
using Event1 = EventSubscribers<EVENT0, std::function<Status()>>;
enum Priority {
ONE = 1,
TWO,
THREE
};
struct Subscriber1 {
Subscriber1(EventSubscribersTest *base)
{
Event1::GetInstance().AddSubscriber(
"Subscriber1", [base] { return base->Execute(ONE); }, ONE);
}
~Subscriber1()
{
Event1::GetInstance().RemoveSubscriber("Subscriber1");
}
};
struct Subscriber2 {
Subscriber2(EventSubscribersTest *base)
{
Event1::GetInstance().AddSubscriber(
"Subscriber2",
[base] {
INJECT_POINT("event.notify.break");
return base->Execute(TWO);
},
TWO);
}
~Subscriber2()
{
Event1::GetInstance().RemoveSubscriber("Subscriber2");
}
};
struct Subscriber3 {
Subscriber3(EventSubscribersTest *base)
{
Event1::GetInstance().AddSubscriber(
"Subscriber3", [base] { return base->Execute(THREE); }, THREE);
}
~Subscriber3()
{
Event1::GetInstance().RemoveSubscriber("Subscriber3");
}
};
std::vector<int> result_;
};
TEST_F(EventSubscribersTest, MultiSubscribers)
{
Subscriber2 s2(this);
{
Subscriber1 s1(this);
Subscriber3 s3(this);
Event1::GetInstance().NotifyAll();
std::vector<int> expect = { 1, 2, 3 };
ASSERT_EQ(result_, expect);
}
result_.clear();
Event1::GetInstance().NotifyAll();
std::vector<int> expect = { 2 };
ASSERT_EQ(result_, expect);
}
TEST_F(EventSubscribersTest, BreakNotify)
{
Subscriber3 s3(this);
Subscriber1 s1(this);
Subscriber2 s2(this);
inject::Set("event.notify.break", "return(K_RUNTIME_ERROR)");
auto status = Event1::GetInstance().NotifyAll();
ASSERT_EQ(status.GetCode(), K_RUNTIME_ERROR);
std::vector<int> expect = { 1 };
ASSERT_EQ(result_, expect);
}
}
}