[pango/fix-split-cursors-at-end: 3/3] Add a test for pango_layout_get_cursor_pos

[Matthias Clasen <matthiasc src gnome org>]

commit d53e5123b6fa797495af4f0cb5ceb69074278d8f
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Aug 4 18:07:40 2021 -0400

    Add a test for pango_layout_get_cursor_pos
    
    This checks that we get split cursors in some
    cases where we expect it. One of the cases was
    broken until the previous commit.

 tests/testmisc.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
---
diff --git a/tests/testmisc.c b/tests/testmisc.c
index c305a168..54566f78 100644
--- a/tests/testmisc.c
+++ b/tests/testmisc.c
@@ -329,6 +329,42 @@ test_get_cursor_crash (void)
   g_object_unref (context);
 }
 
+/* Test that get_cursor returns split cursors in the
+ * expected situations. In particular, this was broken
+ * at the end of the string here.
+ */
+static void
+test_get_cursor (void)
+{
+  const char *text = "abאב";
+  PangoContext *context;
+  PangoLayout *layout;
+  PangoRectangle strong, weak;
+
+  context = pango_font_map_create_context (pango_cairo_font_map_get_default ());
+
+  layout = pango_layout_new (context);
+  pango_layout_set_text (layout, text, -1);
+
+  pango_layout_get_cursor_pos (layout, 0, &strong, &weak);
+  g_assert_cmpint (strong.x, ==, weak.x);
+
+  pango_layout_get_cursor_pos (layout, 1, &strong, &weak);
+  g_assert_cmpint (strong.x, ==, weak.x);
+
+  pango_layout_get_cursor_pos (layout, 2, &strong, &weak);
+  g_assert_cmpint (strong.x, !=, weak.x);
+
+  pango_layout_get_cursor_pos (layout, 4, &strong, &weak);
+  g_assert_cmpint (strong.x, ==, weak.x);
+
+  pango_layout_get_cursor_pos (layout, 6, &strong, &weak);
+  g_assert_cmpint (strong.x, !=, weak.x);
+
+  g_object_unref (layout);
+  g_object_unref (context);
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -349,6 +385,7 @@ main (int argc, char *argv[])
   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);
+  g_test_add_func ("/bidi/get-cursor", test_get_cursor);
 
   return g_test_run ();
 }