Add first version

[ric-plt/sdl.git] / tst / hiredisepolladapter_test.cpp

diff --git a/tst/hiredisepolladapter_test.cpp b/tst/hiredisepolladapter_test.cpp
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+/*
+   Copyright (c) 2018-2019 Nokia.
+
+   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.
+*/
+
+#include <type_traits>
+#include <memory>
+#include <sys/epoll.h>
+#include <async.h>
+#include <gtest/gtest.h>
+#include "private/redis/hiredisepolladapter.hpp"
+#include "private/tst/enginemock.hpp"
+#include "private/tst/hiredissystemmock.hpp"
+
+using namespace shareddatalayer;
+using namespace shareddatalayer::redis;
+using namespace shareddatalayer::tst;
+using namespace testing;
+
+namespace
+{
+    class HiredisEpollAdapterTest: public testing::Test
+    {
+    public:
+        StrictMock<EngineMock> engineMock;
+        StrictMock<HiredisSystemMock> hiredisSystemMock;
+        redisAsyncContext ac;
+        int acFd;
+        std::unique_ptr<HiredisEpollAdapter> adapter;
+        Engine::EventHandler savedEventHandler;
+
+        HiredisEpollAdapterTest():
+            ac { },
+            acFd(10)
+        {
+            ac.c.fd = acFd;
+            adapter.reset(new HiredisEpollAdapter(engineMock, hiredisSystemMock));
+        }
+
+        void expectAddMonitoredFD(int fd, unsigned int events)
+        {
+            EXPECT_CALL(engineMock, addMonitoredFD(fd,events,_))
+                .Times(1)
+                .WillOnce(SaveArg<2>(&savedEventHandler));
+        }
+
+        void expectModifyMonitoredFD(int fd, unsigned int events)
+        {
+            EXPECT_CALL(engineMock, modifyMonitoredFD(fd,events))
+                .Times(1);
+        }
+
+        void expectDeleteMonitoredFD(int fd)
+        {
+            EXPECT_CALL(engineMock, deleteMonitoredFD(fd))
+                .Times(1);
+        }
+    };
+
+    class HiredisEpollAdapterAttachedTest: public HiredisEpollAdapterTest
+    {
+    public:
+        HiredisEpollAdapterAttachedTest()
+        {
+            expectAddMonitoredFD(ac.c.fd, 0);
+            adapter->attach(&ac);
+        }
+
+        ~HiredisEpollAdapterAttachedTest()
+        {
+            expectDeleteMonitoredFD(ac.c.fd);
+        }
+    };
+}
+
+TEST_F(HiredisEpollAdapterTest, IsNotCopyable)
+{
+    EXPECT_FALSE(std::is_copy_constructible<HiredisEpollAdapter>::value);
+    EXPECT_FALSE(std::is_copy_assignable<HiredisEpollAdapter>::value);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, CanHandleInputEvents)
+{
+    InSequence dummy;
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN);
+    ac.ev.addRead(ac.ev.data);
+    EXPECT_CALL(hiredisSystemMock, redisAsyncHandleRead(&ac))
+        .Times(1);
+    savedEventHandler(EngineMock::EVENT_IN);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, DoesNotHandleInputEventIfNotReading)
+{
+    InSequence dummy;
+    EXPECT_CALL(hiredisSystemMock, redisAsyncHandleRead(&ac))
+        .Times(0);
+    savedEventHandler(EngineMock::EVENT_IN);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, CanHandleOutputEvents)
+{
+    InSequence dummy;
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_OUT);
+    ac.ev.addWrite(ac.ev.data);
+    EXPECT_CALL(hiredisSystemMock, redisAsyncHandleWrite(&ac))
+        .Times(1);
+    savedEventHandler(EngineMock::EVENT_OUT);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, DoesNotHandleOutputEventIfNotWriting)
+{
+    InSequence dummy;
+    EXPECT_CALL(hiredisSystemMock, redisAsyncHandleWrite(&ac))
+        .Times(0);
+    savedEventHandler(EngineMock::EVENT_OUT);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, CanBeAttachedAndEventStateChangedIdempotently)
+{
+    InSequence dummy;
+    EXPECT_EQ(adapter.get(), ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN);
+    ac.ev.addRead(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN | EngineMock::EVENT_OUT);
+    ac.ev.addWrite(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_OUT);
+    ac.ev.delRead(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, 0);
+    ac.ev.delWrite(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd,EngineMock::EVENT_IN);
+    ac.ev.addRead(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN | EngineMock::EVENT_OUT);
+    ac.ev.addWrite(ac.ev.data);
+    expectDeleteMonitoredFD(ac.c.fd);
+    ac.ev.cleanup(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_OUT);
+    ac.ev.addWrite(ac.ev.data);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN | EngineMock::EVENT_OUT);
+    ac.ev.addRead(ac.ev.data);
+    expectAddMonitoredFD(ac.c.fd, 0);
+    adapter->attach(&ac);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, FurtherAttachementsResetEventState)
+{
+    InSequence dummy;
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN);
+    ac.ev.addRead(ac.ev.data);
+    expectAddMonitoredFD(ac.c.fd, 0);
+    adapter->attach(&ac);
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_OUT);
+    ac.ev.addWrite(ac.ev.data);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, InputEventIsSetOnce)
+{
+    InSequence dummy;
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_IN);
+    ac.ev.addRead(ac.ev.data);
+    ac.ev.addRead(ac.ev.data);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, OutputEventIsSetOnce)
+{
+    InSequence dummy;
+    expectModifyMonitoredFD(ac.c.fd, EngineMock::EVENT_OUT);
+    ac.ev.addWrite(ac.ev.data);
+    ac.ev.addWrite(ac.ev.data);
+}
+
+TEST_F(HiredisEpollAdapterAttachedTest, MakesCleanupIfDestructedWhileAttahced)
+{
+    InSequence dummy;
+    expectDeleteMonitoredFD(ac.c.fd);
+    adapter.reset(new HiredisEpollAdapter(engineMock, hiredisSystemMock));
+    expectAddMonitoredFD(ac.c.fd, 0);
+    adapter->attach(&ac);
+}
+
+TEST_F(HiredisEpollAdapterTest, DoesNotMakeCleanupIfDestructedWhileNotAttahced)
+{
+    InSequence dummy;
+    adapter.reset(new HiredisEpollAdapter(engineMock, hiredisSystemMock));
+}