[pango/fix-split-cursors-at-end: 1/3] Add an old testcase

[Matthias Clasen <matthiasc src gnome org>]

commit eeff7bb783e1fd44fd8c54e6be8ace267b4521c9
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Aug 4 17:57:54 2021 -0400

    Add an old testcase
    
    This was quite an odyssee:
    - Identify commit from 2008 that caused a regression
    - Spot the commit message alluding to a crash
    - Identify bug number in NEWS for releases from 2008
    - Find the bug in the no longer searchable bugzilla.gnome.org

 tests/testmisc.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
---
diff --git a/tests/testmisc.c b/tests/testmisc.c
index fe2e9075..c305a168 100644
--- a/tests/testmisc.c
+++ b/tests/testmisc.c
@@ -301,6 +301,34 @@ test_fallback_shape (void)
   g_object_unref (context);
 }
 
+/* https://bugzilla.gnome.org/show_bug.cgi?id=547303 */
+static void
+test_get_cursor_crash (void)
+{
+  PangoContext *context;
+  PangoLayout *layout;
+  int i;
+
+  char *string = "foo\n\rbar\r\nbaz\n\nqux\n\n..";
+
+  context = pango_font_map_create_context (pango_cairo_font_map_get_default ());
+
+  layout = pango_layout_new (context);
+
+  pango_layout_set_text (layout, string, -1);
+
+  for (i = 0; string[i]; i++)
+    {
+      PangoRectangle rectA, rectB;
+
+      pango_layout_get_cursor_pos (layout, i, &rectA, &rectB);
+      g_assert_cmpint (rectA.x, ==, rectB.x);
+    }
+
+  g_object_unref (layout);
+  g_object_unref (context);
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -320,6 +348,7 @@ main (int argc, char *argv[])
   g_test_add_func ("/gravity/for-script", test_gravity_for_script);
   g_test_add_func ("/layout/fallback-shape", test_fallback_shape);
   g_test_add_func ("/language/to-tag", test_language_to_tag);
+  g_test_add_func ("/bidi/get-cursor-crash", test_get_cursor_crash);
 
   return g_test_run ();
 }