[PATCH 3/5] riched20/tests: Rewrite tests for ITextServices_TxGetNaturalSize().

[Jactry Zeng]

Signed-off-by: Jactry Zeng 
---
 dlls/riched20/tests/txtsrv.c | 86 ++++++++++++++++++--------------------------
 1 file changed, 35 insertions(+), 51 deletions(-)

diff --git a/dlls/riched20/tests/txtsrv.c b/dlls/riched20/tests/txtsrv.c
index 4dd205a596..d6c888629a 100644
--- a/dlls/riched20/tests/txtsrv.c
+++ b/dlls/riched20/tests/txtsrv.c
@@ -708,81 +708,65 @@ static void test_TxSetText(void)
     ITextHost_Release(host);
 }

+#define CHECK_TXGETNATURALSIZE(res,width,height,max_width,min_width,expected_height) \
+    _check_txgetnaturalsize(res, width, height, max_width, min_width, expected_height, __LINE__)
+static void _check_txgetnaturalsize(HRESULT res, LONG width, LONG height, LONG max_width,
+                                    LONG min_width, LONG expected_height, int line)
+{
+    ok_(__FILE__,line)(res == S_OK, "TxGetNaturalSize failed: 0x%08x.\n", res);
+    ok_(__FILE__,line)(width >= min_width && width <= max_width,
+                       "got wrong width: %d, expected: %d <= width <= %d.\n",
+                       width, min_width, max_width);
+    ok_(__FILE__,line)(height == expected_height, "got wrong height: %d, expected: %d.\n",
+                       height, expected_height);
+}
+
 static void test_TxGetNaturalSize(void)
 {
     ITextServices *txtserv;
     ITextHost *host;
     HRESULT result;
-    BOOL ret;
-
-    /* This value is used when calling TxGetNaturalSize.  MSDN says
-       that this is not supported however a null pointer cannot be
-       used as it will cause a segmentation violation.  The values in
-       the structure being pointed to are required to be INT_MAX
-       otherwise calculations can give wrong values. */
-    const SIZEL psizelExtent = {INT_MAX,INT_MAX};
-
-    static const WCHAR oneA[] = {'A',0};
-
-    /* Results of measurements */
-    LONG xdim, ydim;
-
-    /* The device context to do the tests in */
+    SIZEL psizelExtent = {-1,-1};
+    static const WCHAR test_text[] = {'T','e','s','t','S','o','m','e','T','e','x','t',0};
+    LONG width, height;
     HDC hdcDraw;
-
-    /* Variables with the text metric information */
-    INT charwidth_caps_text[26];
-    TEXTMETRICA tmInfo_text;
+    HWND hwnd;
+    RECT rect;

if (!init_texthost(&txtserv, &host))
         return;

-    hdcDraw = GetDC(NULL);
-    SaveDC(hdcDraw);
-
-    /* Populate the metric strucs */
+    hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP | WS_VISIBLE,
+                           0, 0, 100, 100, 0, 0, 0, NULL);
+    hdcDraw = GetDC(hwnd);
     SetMapMode(hdcDraw,MM_TEXT);
-    GetTextMetricsA(hdcDraw, &tmInfo_text);
-    SetLastError(0xdeadbeef);
-    ret = GetCharWidth32A(hdcDraw,'A','Z',charwidth_caps_text);
-    if (!ret && GetLastError() == ERROR_CALL_NOT_IMPLEMENTED) {
-        win_skip("GetCharWidth32 is not available\n");
-        goto cleanup;
-    }
-
-    /* Make measurements in MM_TEXT */
-    SetMapMode(hdcDraw,MM_TEXT);
-    xdim = 0; ydim = 0;

-    result = ITextServices_TxSetText(txtserv, oneA);
+    result = ITextServices_TxSetText(txtserv, test_text);
     ok(result == S_OK, "ITextServices_TxSetText failed (result = %x)\n", result);
     if (result != S_OK) {
         skip("Could not set text\n");
         goto cleanup;
     }

-    SetLastError(0xdeadbeef);
+    GetClientRect(hwnd, &rect);
+
+    psizelExtent.cx = -1; psizelExtent.cy = -1;
+    width = rect.right - rect.left;
+    height = 0;
     result = ITextServices_TxGetNaturalSize(txtserv, DVASPECT_CONTENT,
                                             hdcDraw, NULL, NULL,
                                             TXTNS_FITTOCONTENT, &psizelExtent,
-                                            &xdim, &ydim);
-    todo_wine ok(result == S_OK || broken(result == E_FAIL), /* WINXP Arabic Language */
-        "TxGetNaturalSize gave unexpected return value (result = %x)\n", result);
-    if (result == S_OK) {
-    todo_wine ok(ydim == tmInfo_text.tmHeight,
-                 "Height calculated incorrectly (expected %d, got %d)\n",
-                 tmInfo_text.tmHeight, ydim);
-    /* The native DLL adds one pixel extra when calculating widths. */
-    todo_wine ok(xdim >= charwidth_caps_text[0] && xdim <= charwidth_caps_text[0] + 1,
-                 "Width calculated incorrectly (expected %d {+1}, got %d)\n",
-                 charwidth_caps_text[0], xdim);
-    } else
-        skip("TxGetNaturalSize measurements not performed (xdim = %d, ydim = %d, result = %x, error = %x)\n",
-             xdim, ydim, result, GetLastError());
+                                            &width, &height);
+    if (result == E_FAIL)
+    {
+        win_skip("ITextServices_TxGetNaturalSize isn't available on this platform.\n");
+        goto cleanup;
+    }
+    todo_wine CHECK_TXGETNATURALSIZE(result, width, height, 83, 70, 13);

cleanup:
-    RestoreDC(hdcDraw,1);
     ReleaseDC(NULL,hdcDraw);
+    DestroyWindow(hwnd);
     ITextServices_Release(txtserv);
     ITextHost_Release(host);
 }