d3d9/tests: Show that a failing SetPrivateData call does not clear the old contents.

dlls/d3d9/tests/device.c

@@ -5109,6 +5109,20 @@ static void test_private_data(void)
             device, sizeof(IUnknown *) * 2, D3DSPD_IUNKNOWN);
     ok(hr == D3DERR_INVALIDCALL, "Got unexpected hr %#x.\n", hr);
 
+    /* A failing SetPrivateData call does not clear the old data with the same tag. */
+    hr = IDirect3DSurface9_SetPrivateData(surface, &IID_IDirect3DVertexBuffer9, device,
+            sizeof(device), D3DSPD_IUNKNOWN);
+    ok(SUCCEEDED(hr), "Failed to set private data, hr %#x.\n", hr);
+    hr = IDirect3DSurface9_SetPrivateData(surface, &IID_IDirect3DVertexBuffer9, device,
+            sizeof(device) * 2, D3DSPD_IUNKNOWN);
+    ok(hr == D3DERR_INVALIDCALL, "Got unexpected hr %#x.\n", hr);
+    size = sizeof(ptr);
+    hr = IDirect3DSurface9_GetPrivateData(surface, &IID_IDirect3DVertexBuffer9, &ptr, &size);
+    ok(SUCCEEDED(hr), "Failed to get private data, hr %#x.\n", hr);
+    IUnknown_Release(ptr);
+    hr = IDirect3DSurface9_FreePrivateData(surface, &IID_IDirect3DVertexBuffer9);
+    ok(SUCCEEDED(hr), "Failed to free private data, hr %#x.\n", hr);
+
     refcount = get_refcount((IUnknown *)device);
     hr = IDirect3DSurface9_SetPrivateData(surface, &IID_IDirect3DSurface9 /* Abuse this tag */,
             device, sizeof(IUnknown *), D3DSPD_IUNKNOWN);
@@ -5176,6 +5190,7 @@ static void test_private_data(void)
     ok(SUCCEEDED(hr), "Failed to set private data, hr %#x.\n", hr);
     hr = IDirect3DSurface9_GetPrivateData(surface2, &IID_IDirect3DVertexBuffer9, data, &size);
     ok(hr == D3DERR_NOTFOUND, "Got unexpected hr %#x.\n", hr);
+
     hr = IDirect3DSurface9_FreePrivateData(surface, &IID_IDirect3DVertexBuffer9);
     ok(SUCCEEDED(hr), "Failed to free private data, hr %#x.\n", hr);