got error "this mock object (used in test configspi.spi_init) should be deleted but never is. Its address is @0x80b2a80"

[Rakesh navaneethakrishnan]

Actually my project is C Project and i am declaring mock object in heap, but declared as a global variable.but still i got this error.
below one is my coed snippet. i dont think i can delete this object and it is not giving any memory leakage. Any idea guys?

//Mock class
class system_mock{
public:
    MOCK_METHOD2(open, int(const char *filename, int flags));
    MOCK_METHOD3(ioctl, int(int filedes, long unsigned int command,unsigned char* p));
    MOCK_METHOD3(ioctl, int(int filedes, long unsigned int command, spi_ioc_transfer* mesg));
};
system_mock mock;
//System call whihc have been mocked
int open (const char *filename, int flags)
{
    return mock.open(filename, flags);
}
int ioctl (int filedes, long unsigned int command,unsigned char* p){
    return mock.ioctl(filedes,command,p);
}
int ioctl (int filedes, long unsigned int command, spi_ioc_transfer* mesg)
{
    return mock.ioctl(filedes,command,mesg);
}

TEST(configspi, spi_init) {
  EXPECT_CALL(mock,open(An<const char*>(),_))
              .WillRepeatedly(Return(1));
  EXPECT_CALL(mock,ioctl(An<int>(),An<unsigned long int>(),An<unsigned char*>()))
              .Times(18)
              .WillRepeatedly(Return(0));
  EXPECT_EQ(0, spi_init());
}

[Billy Donahue]

On Sunday, February 3, 2013, Rakesh navaneethakrishnan wrote:

Actually my project is C Project and i am declaring mock object in heap, but declared as a global variable.but still i got this error.
below one is my coed snippet. i dont think i can delete this object and it is not giving any memory leakage. Any idea guys?

//Mock class
class system_mock{
public:
    MOCK_METHOD2(open, int(const char *filename, int flags));
    MOCK_METHOD3(ioctl, int(int filedes, long unsigned int command,unsigned char* p));
    MOCK_METHOD3(ioctl, int(int filedes, long unsigned int command, spi_ioc_transfer* mesg));
};
system_mock mock;

This system_mock is not heap allocated.

Try system_mock* mock = new system_mock;

You should really be making a fresh one per TEST, deleting it at the end of each test.

The destructor is important, and it is where unmet expectations are detected.

 

//System call whihc have been mocked
int open (const char *filename, int flags)
{
    return mock.open(filename, flags);
}
int ioctl (int filedes, long unsigned int command,unsigned char* p){
    return mock.ioctl(filedes,command,p);
}
int ioctl (int filedes, long unsigned int command, spi_ioc_transfer* mesg)
{
    return mock.ioctl(filedes,command,mesg);
}

Note that these aren't going to actually replace the C system calls, which are declared 'extern "C"' in system headers.

 

TEST(configspi, spi_init) {
  EXPECT_CALL(mock,open(An<const char*>(),_))
              .WillRepeatedly(Return(1));
  EXPECT_CALL(mock,ioctl(An<int>(),An<unsigned long int>(),An<unsigned char*>()))
              .Times(18)
              .WillRepeatedly(Return(0));
  EXPECT_EQ(0, spi_init());
}

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[Rakesh navaneethakrishnan]

Hello thanks for your reply..i made one typo error which changes the meaning..

my actual statement is,

Actually my project is C Project and i am declaring mock object not in heap, but declared as a global variable.but still i got this error .

so definitely it will destructed when it exits scope.so there wont be any memory leakage.then why am i getting any issue.

[Billy Donahue]

You have to delete the mock object before the TEST ends.

--

[Billy Donahue]

but again, your mocking of C API functions (ioctl, etc) isn't going to work unless you're doing something very magical that I can't see.