my_inet.cpp
文件中创建了一个外部套接字api的模拟。mock.h
文件中。my_inet
文件中使用我创建的server.cpp
套接字api。gtest.cpp
编写。这里写的死亡案例按照输出执行。输出说该过程已经死亡。但它也说,socket()
呼叫从未发出过,所以案件显示为失败。
请告诉我这是什么原因以及解决方案是什么。
gtest.cpp
TEST(MyTest, SocketConnectionFail)
{
MockMyTCPAPI obj_myTCP;
EXPECT_CALL( obj_myTCP, socket( 1, 0, 0 ))
.Times( 1 )
.WillOnce( Return( -1 ));
Server obj_server( &obj_myTCP );
EXPECT_DEATH( obj_server.InitializeSocket(), "No socket connection!");
}
server.cpp
int Server::InitializeSocket()
{
if( ret_val_socket == -1 )
{
ret_val_socket = myTCPAPI->socket( PF_INET, SOCK_STREAM, 0 );
if( ret_val_socket == -1 )
{
printf( "\nNo socket connection!" );
exit(1);
}
return ret_val_socket;
}
else
{
printf( "Warning! Attempting to create socket again. %d" , ret_val_socket);
return 2;
}
return 0;
}
my_inet.kpp
int MyTCPAPI::socket( int arg1, int arg2, int arg3 )
{
return -1;
}
输出:
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from MyTest
[ RUN ] MyTest.SocketConnectionFail
[WARNING] /usr/src/gtest/src/gtest-death-test.cc:825:: Death tests use fork(), which is unsafe particularly in a threaded context. For this test, Google Test couldn't detect the number of threads.
No socket connection!
/home/../Documents/office/tdd/tcp/server/gtest.cpp:49: ERROR: this mock object (used in test MyTest.SocketConnectionFail) should be deleted but never is. Its address is @0x7fff2e94a890.
ERROR: 1 leaked mock object found at program exit.
/home/../Documents/office/tdd/tcp/server/gtest.cpp:56: Failure
Death test: obj_server.InitializeSocket()
Result: died but not with expected error.
Expected: No socket connection!
Actual msg:
[ DEATH ]
/home/../Documents/office/tdd/tcp/server/gtest.cpp:49: Failure
Actual function call count doesn't match EXPECT_CALL(obj_myTCP, socket( 1, 0, 0 ))...
Expected: to be called once
Actual: never called - unsatisfied and active
[ FAILED ] MyTest.SocketConnectionFail (3 ms)
[----------] 1 test from MyTest (3 ms total)
[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (3 ms total)
[ PASSED ] 0 tests.
[ FAILED ] 1 test, listed below:
[ FAILED ] MyTest.SocketConnectionFail
1 FAILED TEST
根据docs,EXPECT_DEATH
和ASSERT_DEATH
产生了一个执行死亡测试声明的子进程(在本例中为obj_server.InitializeSocket()
)。
终止子进程后,他们检查退出代码和stderr
消息。如果退出代码为0
或stderr
中的消息与预期值不匹配,则测试无效。另一方面,stdout
未经检查。
因此,在申请人退出之前,必须用printf( "\nNo socket connection!" )
替换fprintf(stderr, "\nNo socket connection!" )
:
int Server::InitializeSocket()
{
if( ret_val_socket == -1 )
{
ret_val_socket = myTCPAPI->socket( PF_INET, SOCK_STREAM, 0 );
if( ret_val_socket == -1 )
{
fprintf(stderr, "\nNo socket connection!" ); // print to stderr here
exit(1);
}
return ret_val_socket;
}
else
{
printf( "Warning! Attempting to create socket again. %d" , ret_val_socket);
return 2;
}
return 0;
}