[GDI32_APITEST] Improve SetWorldTransform testcase (#1717)

[reactos.git] / modules / rostests / apitests / gdi32 / SetWorldTransform.c

diff --git a/modules/rostests/apitests/gdi32/SetWorldTransform.c b/modules/rostests/apitests/gdi32/SetWorldTransform.c
index 55e9e09..cb82531 100644 (file)
--- a/modules/rostests/apitests/gdi32/SetWorldTransform.c
+++ b/modules/rostests/apitests/gdi32/SetWorldTransform.c
@@ -3,26 +3,24 @@
  * LICENSE:         GPL - See COPYING in the top level directory
  * PURPOSE:         Test for SetWorldTransform
  * PROGRAMMERS:     Timo Kreuzer
+ *                  Katayama Hirofumi MZ
  */
 
-#include <apitest.h>
-
-#include <wingdi.h>
-#include <winuser.h>
+#include "precomp.h"
 
 void Test_SetWorldTransform()
 {
-       HDC hdcScreen, hdc;
-       XFORM xform;
-       BOOL result;
-       //PGDI_TABLE_ENTRY pEntry;
-       //DC_ATTR* pdcattr;
-
-       /* Create a DC */
-       hdcScreen = GetDC(NULL);
-       hdc = CreateCompatibleDC(hdcScreen);
-       ReleaseDC(NULL, hdcScreen);
-       SetGraphicsMode(hdc, GM_ADVANCED);
+    HDC hdcScreen, hdc;
+    XFORM xform;
+    BOOL result;
+    //PGDI_TABLE_ENTRY pEntry;
+    //DC_ATTR* pdcattr;
+
+    /* Create a DC */
+    hdcScreen = GetDC(NULL);
+    hdc = CreateCompatibleDC(hdcScreen);
+    ReleaseDC(NULL, hdcScreen);
+    SetGraphicsMode(hdc, GM_ADVANCED);
 
     /* Set identity transform */
     xform.eM11 = 1;
@@ -32,21 +30,95 @@ void Test_SetWorldTransform()
     xform.eDx = 0;
     xform.eDy = 0;
     result = SetWorldTransform(hdc, &xform);
-    ok(result == 1, "\n");
+    ok(result == 1, "SetWorldTransform should succeed\n");
+
+    /* Set eM11 to 0 */
+    xform.eM11 = 0;
+    result = SetWorldTransform(hdc, &xform);
+    ok(result == 0, "SetWorldTransform should fail\n");
 
-    /* Something invalid */
+    /* Set eM22 to 0 */
+    xform.eM11 = 1;
     xform.eM22 = 0;
     result = SetWorldTransform(hdc, &xform);
-    ok(result == 0, "\n");
+    ok(result == 0, "SetWorldTransform should fail\n");
+
+    /* Set values that result in the determinant being 0 */
+    xform.eM11 = 2;
+    xform.eM12 = 3;
+    xform.eM21 = 4;
+    xform.eM22 = 6;
+    result = SetWorldTransform(hdc, &xform);
+    ok(result == 0, "SetWorldTransform should fail\n");
 
-       //pEntry = GdiHandleTable + GDI_HANDLE_GET_INDEX(hdc);
-       //pdcattr = pEntry->UserData;
+    /* Small modification to make the determinant != 0 */
+    xform.eM12 = (FLOAT)3.0001;
+    result = SetWorldTransform(hdc, &xform);
+    ok(result == 1, "SetWorldTransform should succeed\n");
 
-       DeleteDC(hdc);
+    /* Set values that result in the determinant being 0 due to rounding */
+    xform.eM11 = 1;
+    xform.eM12 = (FLOAT)0.9999999;
+    xform.eM21 = (FLOAT)1.0000001;
+    xform.eM22 = 1;
+    ok(xform.eM12 != (FLOAT)1.0, "xform.eM12 shouldn't be 1.0\n");
+    ok(xform.eM21 != (FLOAT)1.0, "xform.eM21 shouldn't be 1.0\n");
+    ok(xform.eM12 * xform.eM21 != (FLOAT)1.0, "xform.eM12 * xform.eM21 shouldn't be 1.0\n");
+    result = SetWorldTransform(hdc, &xform);
+    ok(result == 0, "SetWorldTransform should fail\n");
+
+    /* Test world transform (should be unchanged by previous failure) */
+    result = GetWorldTransform(hdc, &xform);
+    ok(result == 1, "GetWorldTransform should succeed\n");
+    ok(xform.eM11 == 2, "xform.eM11 should be 2\n");
+    ok(xform.eM12 == (FLOAT)3.0001, "xform.eM12 should be 3.0001\n");
+    ok(xform.eM21 == 4, "xform.eM21 should be 4\n");
+    ok(xform.eM22 == 6, "xform.eM22 should be 6\n");
+
+    /* Set smallest possible values */
+    xform.eM11 = 1.17549435e-38f;
+    xform.eM12 = 0;
+    xform.eM21 = 0;
+    xform.eM22 = 1.17549435e-38f;
+    ok(xform.eM11 != (FLOAT)0.0, "xform.eM11 shouldn't be 0.0\n");
+    ok(xform.eM22 != (FLOAT)0.0, "xform.eM22 shouldn't be 0.0\n");
+    ok(xform.eM11 * xform.eM22 != (FLOAT)0.0, "xform.eM12 * xform.eM21 shouldn't be 0.0\n");
+    result = SetWorldTransform(hdc, &xform);
+    ok(result == 1, "SetWorldTransform should succeed\n");
+
+    /* Test world transform */
+    result = GetWorldTransform(hdc, &xform);
+    ok(result == 1, "GetWorldTransform should succeed\n");
+    ok(xform.eM11 > 0, "xform.eM11 should not be 0\n");
+    ok(xform.eM12 == 0, "xform.eM12 should be 0\n");
+    ok(xform.eM21 == 0, "xform.eM21 should be 0\n");
+    ok(xform.eM22 > 0, "xform.eM22 should not be 0\n");
+
+    xform.eM11 = 0;
+    xform.eM12 = 1;
+    xform.eM21 = 1;
+    xform.eM22 = 0;
+    result = SetWorldTransform(hdc, &xform);
+    ok_int(result, 1);
+
+    xform.eM11 = 1;
+    xform.eM12 = 1;
+    xform.eM21 = 1;
+    xform.eM22 = 1;
+    result = SetWorldTransform(hdc, &xform);
+    ok_int(result, 0);
+
+    result = GetWorldTransform(hdc, &xform);
+    ok_int(result, 1);
+    ok(xform.eM11 == 0, "xform.eM11 should be 0\n");
+    ok(xform.eM12 == 1, "xform.eM12 should be 1\n");
+    ok(xform.eM21 == 1, "xform.eM21 should be 1\n");
+    ok(xform.eM22 == 0, "xform.eM22 should be 0\n");
+
+    DeleteDC(hdc);
 }
 
 START_TEST(SetWorldTransform)
 {
     Test_SetWorldTransform();
 }
-