qcap/tests: Add some tests for IBaseFilter::EnumPins() on the AVI compressor.

dlls/qcap/tests/avico.c

@@ -40,6 +40,13 @@ static void check_interface_(unsigned int line, void *iface_ptr, REFIID iid, BOO
         IUnknown_Release(unk);
 }
 
+static ULONG get_refcount(void *iface)
+{
+    IUnknown *unknown = iface;
+    IUnknown_AddRef(unknown);
+    return IUnknown_Release(unknown);
+}
+
 static void test_interfaces(IBaseFilter *filter)
 {
     check_interface(filter, &IID_IBaseFilter, TRUE);
@@ -61,6 +68,124 @@ static void test_interfaces(IBaseFilter *filter)
     check_interface(filter, &IID_IVideoWindow, FALSE);
 }
 
+static void test_enum_pins(IBaseFilter *filter)
+{
+    IEnumPins *enum1, *enum2;
+    ULONG ref, count;
+    IPin *pins[3];
+    HRESULT hr;
+
+    ref = get_refcount(filter);
+    ok(ref == 1, "Got unexpected refcount %d.\n", ref);
+
+    hr = IBaseFilter_EnumPins(filter, NULL);
+    ok(hr == E_POINTER, "Got hr %#x.\n", hr);
+
+    hr = IBaseFilter_EnumPins(filter, &enum1);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ref = get_refcount(filter);
+    ok(ref == 2, "Got unexpected refcount %d.\n", ref);
+    ref = get_refcount(enum1);
+    ok(ref == 1, "Got unexpected refcount %d.\n", ref);
+
+    hr = IEnumPins_Next(enum1, 1, NULL, NULL);
+    ok(hr == E_POINTER, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum1, 1, pins, NULL);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ref = get_refcount(filter);
+    ok(ref == 3, "Got unexpected refcount %d.\n", ref);
+    ref = get_refcount(pins[0]);
+    ok(ref == 3, "Got unexpected refcount %d.\n", ref);
+    ref = get_refcount(enum1);
+    ok(ref == 1, "Got unexpected refcount %d.\n", ref);
+    IPin_Release(pins[0]);
+    ref = get_refcount(filter);
+    ok(ref == 2, "Got unexpected refcount %d.\n", ref);
+
+    hr = IEnumPins_Next(enum1, 1, pins, NULL);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ref = get_refcount(filter);
+    ok(ref == 3, "Got unexpected refcount %d.\n", ref);
+    ref = get_refcount(pins[0]);
+    ok(ref == 3, "Got unexpected refcount %d.\n", ref);
+    ref = get_refcount(enum1);
+    ok(ref == 1, "Got unexpected refcount %d.\n", ref);
+    IPin_Release(pins[0]);
+    ref = get_refcount(filter);
+    ok(ref == 2, "Got unexpected refcount %d.\n", ref);
+
+    hr = IEnumPins_Next(enum1, 1, pins, NULL);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Reset(enum1);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum1, 1, pins, &count);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(count == 1, "Got count %u.\n", count);
+    IPin_Release(pins[0]);
+
+    hr = IEnumPins_Next(enum1, 1, pins, &count);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(count == 1, "Got count %u.\n", count);
+    IPin_Release(pins[0]);
+
+    hr = IEnumPins_Next(enum1, 1, pins, &count);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+    ok(!count, "Got count %u.\n", count);
+
+    hr = IEnumPins_Reset(enum1);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum1, 2, pins, NULL);
+    ok(hr == E_INVALIDARG, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum1, 2, pins, &count);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(count == 2, "Got count %u.\n", count);
+    IPin_Release(pins[0]);
+    IPin_Release(pins[1]);
+
+    hr = IEnumPins_Next(enum1, 2, pins, &count);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+    ok(!count, "Got count %u.\n", count);
+
+    hr = IEnumPins_Reset(enum1);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum1, 3, pins, &count);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+    ok(count == 2, "Got count %u.\n", count);
+    IPin_Release(pins[0]);
+    IPin_Release(pins[1]);
+
+    hr = IEnumPins_Reset(enum1);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Clone(enum1, &enum2);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Skip(enum1, 3);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Skip(enum1, 2);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Skip(enum1, 1);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum1, 1, pins, NULL);
+    ok(hr == S_FALSE, "Got hr %#x.\n", hr);
+
+    hr = IEnumPins_Next(enum2, 1, pins, NULL);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+    IPin_Release(pins[0]);
+
+    IEnumPins_Release(enum2);
+    IEnumPins_Release(enum1);
+}
+
 static LRESULT CALLBACK driver_proc(DWORD_PTR id, HDRVR driver, UINT msg,
         LPARAM lparam1, LPARAM lparam2)
 {
@@ -127,6 +252,7 @@ START_TEST(avico)
             ok(hr == S_OK, "Got hr %#x.\n", hr);
 
             test_interfaces(filter);
+            test_enum_pins(filter);
 
             ref = IBaseFilter_Release(filter);
             ok(!ref, "Got outstanding refcount %d.\n", ref);