user32: Add the tests for GetWindowModuleFileName.

dlls/user32/tests/win.c

@@ -4631,6 +4631,77 @@ static void test_Expose(void)
     DestroyWindow(mw);
 }
 
+static void test_GetWindowModuleFileName(void)
+{
+    HWND hwnd;
+    HINSTANCE hinst;
+    UINT ret1, ret2;
+    char buf1[MAX_PATH], buf2[MAX_PATH];
+
+    hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP, 0,0,0,0, 0, 0, 0, NULL);
+    assert(hwnd);
+
+    hinst = (HINSTANCE)GetWindowLongPtr(hwnd, GWLP_HINSTANCE);
+    ok(hinst == 0, "expected 0, got %p\n", hinst);
+
+    buf1[0] = 0;
+    SetLastError(0xdeadbeef);
+    ret1 = GetModuleFileName(hinst, buf1, sizeof(buf1));
+    ok(ret1, "GetModuleFileName error %u\n", GetLastError());
+
+    buf2[0] = 0;
+    SetLastError(0xdeadbeef);
+    ret2 = GetWindowModuleFileName(hwnd, buf2, sizeof(buf2));
+    ok(ret2, "GetWindowModuleFileName error %u\n", GetLastError());
+
+    ok(ret1 == ret2, "%u != %u\n", ret1, ret2);
+    ok(!strcmp(buf1, buf2), "%s != %s\n", buf1, buf2);
+
+    hinst = GetModuleHandle(0);
+
+    /* MSDN mentions ERROR_INSUFFICIENT_BUFFER, but XP doesn't do it */
+    SetLastError(0xdeadbeef);
+    ret2 = GetModuleFileName(hinst, buf2, ret1 - 2);
+    ok(ret2 == ret1 - 2, "expected %u, got %u\n", ret1 - 2, ret2);
+    ok(GetLastError() == 0xdeadbeef, "expected 0xdeadbeef, got %u\n", GetLastError());
+
+    SetLastError(0xdeadbeef);
+    ret2 = GetModuleFileName(hinst, buf2, 0);
+    ok(!ret2, "GetModuleFileName should return 0\n");
+    ok(GetLastError() == 0xdeadbeef, "expected 0xdeadbeef, got %u\n", GetLastError());
+
+    SetLastError(0xdeadbeef);
+    ret2 = GetWindowModuleFileName(hwnd, buf2, ret1 - 2);
+    ok(ret2 == ret1 - 2, "expected %u, got %u\n", ret1 - 2, ret2);
+    ok(GetLastError() == 0xdeadbeef, "expected 0xdeadbeef, got %u\n", GetLastError());
+
+    SetLastError(0xdeadbeef);
+    ret2 = GetWindowModuleFileName(hwnd, buf2, 0);
+    ok(!ret2, "expected 0, got %u\n", ret2);
+    ok(GetLastError() == 0xdeadbeef, "expected 0xdeadbeef, got %u\n", GetLastError());
+
+    DestroyWindow(hwnd);
+
+    buf2[0] = 0;
+    hwnd = (HWND)0xdeadbeef;
+    SetLastError(0xdeadbeef);
+    ret1 = GetWindowModuleFileName(hwnd, buf1, sizeof(buf1));
+    ok(!ret1, "expected 0, got %u\n", ret1);
+    ok(GetLastError() == ERROR_INVALID_WINDOW_HANDLE, "expected ERROR_INVALID_WINDOW_HANDLE, got %u\n", GetLastError());
+
+    hwnd = GetDesktopWindow();
+    ok(IsWindow(hwnd), "got invalid desktop window %p\n", hwnd);
+    SetLastError(0xdeadbeef);
+    ret1 = GetWindowModuleFileName(hwnd, buf1, sizeof(buf1));
+    ok(!ret1, "expected 0, got %u\n", ret1);
+
+    hwnd = FindWindow("Shell_TrayWnd", NULL);
+    ok(IsWindow(hwnd), "got invalid tray window %p\n", hwnd);
+    SetLastError(0xdeadbeef);
+    ret1 = GetWindowModuleFileName(hwnd, buf1, sizeof(buf1));
+    ok(!ret1, "expected 0, got %u\n", ret1);
+}
+
 START_TEST(win)
 {
     pGetAncestor = (void *)GetProcAddress( GetModuleHandleA("user32.dll"), "GetAncestor" );
@@ -4675,7 +4746,7 @@ START_TEST(win)
 
     /* Add the tests below this line */
     test_params();
-
+    test_GetWindowModuleFileName();
     test_capture_1();
     test_capture_2();
     test_capture_3(hwndMain, hwndMain2);