[Bug 54637] New: riched20:txtsrv - test_TxGetNaturalSize fails if system GUI font's glyph widths are wider than expected by the test

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54637

Bug ID: 54637
           Summary: riched20:txtsrv - test_TxGetNaturalSize fails if
                    system GUI font's glyph widths are wider than expected
                    by the test
           Product: Wine
           Version: 8.3
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: richedit
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
   Regression SHA1: 6e264bbd1ddf0d271d4506462ecd4f20f4a20597
      Distribution: ---

Today, test_TxGetNaturalSize() creates a pop-up window with a fixed size
(extent) of 100 x 100.  The test function then proceeds to compute the
natural size of rich edit control that fits the sample text
"TestSomeText" and compare it to the RECT calculated by DrawText.

It appears that this test fails if the text width exceeds the width of
the test window's client area.  In this case, DrawText() with
DT_WORDBREAK breaks the text into the two lines due to text wrapping;
however, Rich Edit's ITextServices::TxGetNaturalSize implementation does
not seem to perform text wrapping on overflow.  This results in extent
mismatch.

In conclusion, the test may fail if the rendered width of the sample
text "TestSomeText" is larger than what the test expects.  This depends
on the current font used for DEFAULT_GUI_FONT.

Omitting DT_WORDWRAP for the DrawText() call seems to fix this test failure.