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tests: Add more tests for COM refcounts

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As suggested by Luca Bacci, so that we keep track of things more clearly
in terms of COM.
This commit is contained in:
Chun-wei Fan 2024-12-13 11:09:03 +08:00
parent 4ab7977a4d
commit 2af6baad08
2 changed files with 12 additions and 8 deletions
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10
glib/tests/cxx.cpp
View File

@ -548,12 +548,14 @@ test_clear_com (void)
g_assert_null (o);
g_assert_true (SUCCEEDED (CoCreateInstance (CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, IID_IWICImagingFactory, (void **)&tmp)));
g_assert_nonnull (tmp);
tmp->QueryInterface (IID_IWICImagingFactory, (void **)&o); /* IWICImagingFactory::QueryInterface increments the refcount */
tmp->QueryInterface (IID_IWICImagingFactory, (void **)&o); /* IWICImagingFactory::QueryInterface increments tmp's refcount */
g_assert_nonnull (o);
g_assert_cmpint (o->AddRef (), ==, 3); /* refcount incremented again */
g_win32_clear_com (&o);
g_assert_cmpint (tmp->AddRef (), ==, 3); /* tmp's refcount incremented again */
g_win32_clear_com (&o); /* tmp's refcount gets decremented */
g_assert_null (o);
tmp->Release ();
g_assert_cmpint (tmp->Release (), ==, 1); /* tmp's refcount gets decremented, again */
g_win32_clear_com (&tmp);
g_assert_null (tmp);
CoUninitialize ();
}

10
glib/tests/win32.c
View File

@ -168,12 +168,14 @@ test_clear_com (void)
g_assert_null (o);
g_assert_true (SUCCEEDED (CoCreateInstance (&CLSID_WICImagingFactory, NULL, CLSCTX_INPROC_SERVER, &IID_IWICImagingFactory, (void **)&tmp)));
g_assert_nonnull (tmp);
IWICImagingFactory_QueryInterface (tmp, &IID_IWICImagingFactory, (void **)&o); /* IWICImagingFactory_QueryInterface increments the refcount */
IWICImagingFactory_QueryInterface (tmp, &IID_IWICImagingFactory, (void **)&o); /* IWICImagingFactory_QueryInterface increments tmp's refcount */
g_assert_nonnull (o);
g_assert_cmpint (IWICImagingFactory_AddRef (o), ==, 3); /* refcount incremented again */
g_win32_clear_com (&o);
g_assert_cmpint (IWICImagingFactory_AddRef (tmp), ==, 3); /* tmp's refcount incremented, again */
g_win32_clear_com (&o); /* tmp's refcount decrements */
g_assert_null (o);
IWICImagingFactory_Release (tmp);
g_assert_cmpint (IWICImagingFactory_Release (tmp), ==, 1); /* tmp's refcount decrements, again */
g_win32_clear_com (&tmp);
g_assert_null (tmp);
CoUninitialize ();
}