/*
* Check that we don't invalid iterators by removing descriptors during an
* on_Write callback.
*/
void SelectServerTest::testRemoveOthersWhenWriteable() {
Descriptors read_set, write_set, delete_set;
LoopbackDescriptor loopback1, loopback2, loopback3;
loopback1.Init();
loopback2.Init();
loopback3.Init();
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&loopback1));
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&loopback2));
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&loopback3));
write_set.insert(&loopback1);
write_set.insert(&loopback2);
write_set.insert(&loopback3);
loopback1.SetOnWritable(NewCallback(
this, &SelectServerTest::NullHandler));
loopback2.SetOnWritable(NewCallback(
this,
&SelectServerTest::RemoveAndDeleteDescriptors,
read_set, write_set, delete_set));
loopback3.SetOnWritable(NewCallback(
this, &SelectServerTest::NullHandler));
OLA_ASSERT_EQ(3, write_descriptor_count->Get());
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
m_ss->Run();
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
}
/*
* Confirm we don't leak memory when the SelectServer is destroyed without all
* the descriptors being removed.
*/
void SelectServerTest::testShutdownWithActiveDescriptors() {
LoopbackDescriptor loopback_socket;
loopback_socket.Init();
OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&loopback_socket));
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&loopback_socket));
}
/*
* Confirm we can't add the same descriptor twice.
*/
void SelectServerTest::testDoubleAddAndRemove() {
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get()); // internal socket
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
LoopbackDescriptor loopback_socket;
loopback_socket.Init();
OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&loopback_socket));
OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&loopback_socket));
OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(1, write_descriptor_count->Get());
m_ss->RemoveReadDescriptor(&loopback_socket);
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(1, write_descriptor_count->Get());
m_ss->RemoveWriteDescriptor(&loopback_socket);
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
// Trying to remove a second time shouldn't crash
m_ss->RemoveReadDescriptor(&loopback_socket);
m_ss->RemoveWriteDescriptor(&loopback_socket);
}
/*
* Check that RemoveWriteDescriptor is reentrant.
* Similar to the case above, but this removes & deletes the descriptor from
* within the OnRead callback of the same descriptor.
*/
void SelectServerTest::testRemoveWriteWhenReadable() {
// Ownership is transferred to the SelectServer.
LoopbackDescriptor *loopback = new LoopbackDescriptor();
loopback->Init();
loopback->SetOnData(NewCallback(
this, &SelectServerTest::ReadDataAndRemove,
static_cast<ConnectedDescriptor*>(loopback)));
loopback->SetOnWritable(NewCallback(this, &SelectServerTest::NullHandler));
OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(loopback));
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(loopback));
OLA_ASSERT_EQ(2, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(1, write_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
// Send some data to make this descriptor readable.
uint8_t data[] = {'a'};
loopback->Send(data, arraysize(data));
m_ss->Run();
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
}
/*
* Confirm we can't add invalid descriptors to the SelectServer
*/
void SelectServerTest::testAddInvalidDescriptor() {
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get()); // internal socket
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
// Adding and removing a uninitialized socket should fail
LoopbackDescriptor bad_socket;
OLA_ASSERT_FALSE(m_ss->AddReadDescriptor(&bad_socket));
OLA_ASSERT_FALSE(m_ss->AddWriteDescriptor(&bad_socket));
m_ss->RemoveReadDescriptor(&bad_socket);
m_ss->RemoveWriteDescriptor(&bad_socket);
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get()); // internal socket
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
}
/*
* Test the interaction between read and write descriptor.
*/
void SelectServerTest::testReadWriteInteraction() {
UnixSocket socket;
socket.Init();
socket.SetOnClose(NewSingleCallback(this, &SelectServerTest::Terminate));
OLA_ASSERT_TRUE(m_ss->AddReadDescriptor(&socket));
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(&socket));
m_ss->RemoveWriteDescriptor(&socket);
// now the Write end closes
auto_ptr<UnixSocket> other_end(socket.OppositeEnd());
other_end->CloseClient();
m_ss->RegisterSingleTimeout(
100, ola::NewSingleCallback(this, &SelectServerTest::FatalTimeout));
m_ss->Run();
m_ss->RemoveReadDescriptor(&socket);
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
}
/*
* Check that RemoveWriteDescriptor is reentrant.
* We use the Execute() method to close a write descriptor during the same
* cycle in which it becomes writeable. See
* https://github.com/OpenLightingProject/ola/pull/429 for details.
*/
void SelectServerTest::testRemoveWriteWhenOtherReadable() {
Descriptors read_set, write_set, delete_set;
LoopbackDescriptor *loopback = new LoopbackDescriptor();
loopback->Init();
loopback->SetOnWritable(NewCallback(this, &SelectServerTest::NullHandler));
write_set.insert(loopback);
delete_set.insert(loopback);
OLA_ASSERT_TRUE(m_ss->AddWriteDescriptor(loopback));
OLA_ASSERT_EQ(1, write_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
m_ss->Execute(NewSingleCallback(
this, &SelectServerTest::RemoveAndDeleteDescriptors,
read_set, write_set, delete_set));
m_ss->Run();
OLA_ASSERT_EQ(0, write_descriptor_count->Get());
OLA_ASSERT_EQ(1, connected_read_descriptor_count->Get());
OLA_ASSERT_EQ(0, read_descriptor_count->Get());
}