pyuno: uno.Char is UTF-16 code unit, not UCS-4

Check for that in ctor.

Change-Id: Ia69b3d87ac4ccb5b6cc13169d7022c04607c609f
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/108803
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/pyuno/source/module/uno.py b/pyuno/source/module/uno.py
index c4ca808feaa0..5fa7b135736d 100644
--- a/pyuno/source/module/uno.py
+++ b/pyuno/source/module/uno.py
@@ -225,9 +225,9 @@ class Char:
 
     Use an instance of this class to explicitly pass a char to UNO.
 
-    For Python 2, this class only works with unicode objects. Creating
-    a Char instance with a normal str object or comparing a Char instance
-    to a normal str object will raise an AssertionError.
+    For Python 3, this class only works with unicode (str) objects. Creating
+    a Char instance with a bytes object or comparing a Char instance
+    to a bytes object will raise an AssertionError.
 
     :param value: A Unicode string with length 1
     """
@@ -236,6 +236,7 @@ class Char:
         assert isinstance(value, str), "Expected str object, got %s instead." % type(value)
 
         assert len(value) == 1, "Char value must have length of 1."
+        assert ord(value[0]) <= 0xFFFF, "Char value must be UTF-16 code unit"
 
         self.value = value