reactos/rostests/apitests/win32nt/ntgdi/NtGdiGetRandomRgn.c

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/*
* PROJECT: ReactOS api tests
* LICENSE: GPL - See COPYING in the top level directory
* PURPOSE: Test for NtGdiGetRandomRgn
* PROGRAMMERS:
*/
#include <win32nt.h>
START_TEST(NtGdiGetRandomRgn)
{
HINSTANCE hinst = GetModuleHandle(NULL);
HWND hWnd;
HDC hDC;
HRGN hrgn, hrgn2;
/* Create a window */
hWnd = CreateWindowW(L"BUTTON", L"TestWindow", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
CW_USEDEFAULT, CW_USEDEFAULT, 100, 100,
NULL, NULL, hinst, 0);
// UpdateWindow(hWnd);
hDC = GetDC(hWnd);
ASSERT(hDC != NULL);
hrgn = CreateRectRgn(0,0,0,0);
hrgn2 = CreateRectRgn(3,3,10,10);
SetLastError(ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn(0, hrgn, 0) == -1);
RTEST(GetLastError() == ERROR_INVALID_HANDLE);
SetLastError(ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn((HDC)2345, hrgn, 1) == -1);
RTEST(GetLastError() == ERROR_INVALID_HANDLE);
SetLastError(ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn((HDC)2345, hrgn, 10) == -1);
RTEST(GetLastError() == ERROR_INVALID_HANDLE);
SetLastError(ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn((HDC)2345, (HRGN)10, 10) == -1);
RTEST(GetLastError() == ERROR_INVALID_HANDLE);
SetLastError(ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn((HDC)2345, 0, 1) == -1);
RTEST(GetLastError() == ERROR_INVALID_HANDLE);
SetLastError(ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn(hDC, 0, 0) == 0);
RTEST(NtGdiGetRandomRgn(hDC, 0, 1) == 0);
RTEST(NtGdiGetRandomRgn(hDC, (HRGN)-5, 0) == 0);
RTEST(NtGdiGetRandomRgn(hDC, (HRGN)-5, 1) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 0) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 1) == 0);
TEST(NtGdiGetRandomRgn(hDC, hrgn, 2) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 3) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 4) == 1);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 5) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 10) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, -10) == 0);
RTEST(GetLastError() == ERROR_SUCCESS);
SelectClipRgn(hDC, hrgn2);
RTEST(NtGdiGetRandomRgn(hDC, 0, 1) == -1);
RTEST(GetLastError() == ERROR_SUCCESS);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 1) == 1);
RTEST(CombineRgn(hrgn, hrgn, hrgn, RGN_OR) == SIMPLEREGION);
RTEST(CombineRgn(hrgn, hrgn, hrgn2, RGN_XOR) == NULLREGION);
SetRectRgn(hrgn2,0,0,0,0);
SelectClipRgn(hDC, hrgn2);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 1) == 1);
RTEST(CombineRgn(hrgn2, hrgn, hrgn2, RGN_XOR) == NULLREGION);
RTEST(CombineRgn(hrgn2, hrgn, hrgn, RGN_OR) == NULLREGION);
SelectClipRgn(hDC, NULL);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 1) == 0);
RTEST(NtGdiGetRandomRgn(hDC, hrgn, 4) == 1);
RTEST(GetLastError() == ERROR_SUCCESS);
ReleaseDC(hWnd, hDC);
DestroyWindow(hWnd);
}