Using GMock to verify a Destructor Call
-
12-10-2019 - |
Question
Using GMock, how can I verify that a class's destructor is called? Is there a way, other than to wrap it in another class?
The obvious method, EXPECT_CALL(object, ~classtype())
yields a compiler error (gmock cannot produce a mock method called gmock_~classtype
).
Solution
An easy way to check for a destructor call:
class MockFoo : public Foo {
...
// Add the following two lines to the mock class.
MOCK_METHOD0(Die, void());
virtual ~MockFoo() { Die(); }
};
In your test function:
MockFoo* foo = new MockFoo;
...
{
EXPECT_CALL(*foo, Die());
}
More Details can be found here: Mocking Destructors
OTHER TIPS
Unless you're passing --gmock_catch_leaked_mocks=0
, then gmock should already be detecting when you fail to destroy a mock. The destructor is where unsatisfied expectations are flagged as errors, so gmock has special support for detecting when it is not called.
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