[PATCH 2/4] dwmapi/tests: Add basic tests for DwmGetWindowAttribute.

[Gabriel Ivăncescu]

Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
---
 dlls/dwmapi/tests/Makefile.in |  2 +-
 dlls/dwmapi/tests/dwmapi.c    | 51 +++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/dlls/dwmapi/tests/Makefile.in b/dlls/dwmapi/tests/Makefile.in
index 6c61304..5a560ea 100644
--- a/dlls/dwmapi/tests/Makefile.in
+++ b/dlls/dwmapi/tests/Makefile.in
@@ -1,5 +1,5 @@
 TESTDLL = dwmapi.dll
-IMPORTS = dwmapi
+IMPORTS = dwmapi gdi32 user32
 
 C_SRCS = \
 	dwmapi.c
diff --git a/dlls/dwmapi/tests/dwmapi.c b/dlls/dwmapi/tests/dwmapi.c
index 1904e28..cebefa9 100644
--- a/dlls/dwmapi/tests/dwmapi.c
+++ b/dlls/dwmapi/tests/dwmapi.c
@@ -16,9 +16,37 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include "windows.h"
 #include "dwmapi.h"
 #include "wine/test.h"
 
+static HWND test_wnd;
+static LRESULT WINAPI test_wndproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
+{
+    return DefWindowProcA(hwnd, message, wParam, lParam);
+}
+
+static void test_DwmGetWindowAttribute(void)
+{
+    BOOL nc_rendering;
+    HRESULT hr;
+
+    hr = DwmGetWindowAttribute(NULL, DWMWA_NCRENDERING_ENABLED, &nc_rendering, sizeof(nc_rendering));
+    ok(hr == E_HANDLE || broken(hr == E_INVALIDARG) /* Vista */, "DwmGetWindowAttribute(DWMWA_NCRENDERING_ENABLED) returned 0x%08x.\n", hr);
+    hr = DwmGetWindowAttribute(test_wnd, DWMWA_NCRENDERING_ENABLED, NULL, sizeof(nc_rendering));
+    ok(hr == E_INVALIDARG, "DwmGetWindowAttribute(DWMWA_NCRENDERING_ENABLED) returned 0x%08x.\n", hr);
+    hr = DwmGetWindowAttribute(test_wnd, DWMWA_NCRENDERING_ENABLED, &nc_rendering, 0);
+    ok(hr == E_INVALIDARG, "DwmGetWindowAttribute(DWMWA_NCRENDERING_ENABLED) returned 0x%08x.\n", hr);
+    nc_rendering = FALSE;
+    hr = DwmGetWindowAttribute(test_wnd, 0xdeadbeef, &nc_rendering, sizeof(nc_rendering));
+    ok(hr == E_INVALIDARG, "DwmGetWindowAttribute(0xdeadbeef) returned 0x%08x.\n", hr);
+
+    nc_rendering = 0xdeadbeef;
+    hr = DwmGetWindowAttribute(test_wnd, DWMWA_NCRENDERING_ENABLED, &nc_rendering, sizeof(nc_rendering));
+    ok(hr == S_OK, "DwmGetWindowAttribute(DWMWA_NCRENDERING_ENABLED) failed 0x%08x.\n", hr);
+    ok(nc_rendering == FALSE || nc_rendering == TRUE, "non-boolean value 0x%x.\n", nc_rendering);
+}
+
 static void test_DwmIsCompositionEnabled(void)
 {
     BOOL enabled;
@@ -35,5 +63,28 @@ static void test_DwmIsCompositionEnabled(void)
 
 START_TEST(dwmapi)
 {
+    HINSTANCE inst = GetModuleHandleA(NULL);
+    WNDCLASSA cls;
+
+    cls.style = 0;
+    cls.lpfnWndProc = test_wndproc;
+    cls.cbClsExtra = 0;
+    cls.cbWndExtra = 0;
+    cls.hInstance = inst;
+    cls.hIcon = 0;
+    cls.hCursor = LoadCursorA(0, (LPCSTR)IDC_ARROW);
+    cls.hbrBackground = GetStockObject(WHITE_BRUSH);
+    cls.lpszMenuName = NULL;
+    cls.lpszClassName = "Test";
+    RegisterClassA(&cls);
+
+    test_wnd = CreateWindowExA(0, "Test", "Test Window", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+                               100, 100, 200, 200, 0, 0, 0, NULL);
+    ok(test_wnd != NULL, "Failed to create test window.\n");
+
+    test_DwmGetWindowAttribute();
     test_DwmIsCompositionEnabled();
+
+    DestroyWindow(test_wnd);
+    UnregisterClassA("Test", inst);
 }
-- 
2.21.0