Check unidata_version to determine width

Did not actually determine whether this check is correct.

tests/test_python/test_lib.py

@@ -6,6 +6,7 @@ import os
 import sys
 import re
 import shutil
+import unicodedata
 
 from time import sleep
 from subprocess import call, PIPE
@@ -429,6 +430,13 @@ width_data = {
 	'F': 2,          # Fullwidth
 }
 
+unidata_version = tuple((
+	int(c) for c in unicodedata.unidata_version.split('.')))
+
+U1F48E_WIDTH = (
+	1 if unidata_version >= (6,) else 2
+)
+
 
 class TestUnicode(TestCase):
 	def assertStringsIdentical(self, s1, s2):
@@ -497,14 +505,14 @@ class TestUnicode(TestCase):
 		if sys.maxunicode < 0x10FFFF:
 			raise SkipTest('Can only test strwidth_ucs_4 in UCS-4 Pythons')
 
-		self.assertEqual(1, plu.strwidth_ucs_4(width_data, '\U0001F48E'))
+		self.assertEqual(U1F48E_WIDTH, plu.strwidth_ucs_4(width_data, '\U0001F48E'))
 
 	def test_strwidth_ucs_2(self):
 		self.assertEqual(4, plu.strwidth_ucs_2(width_data, 'abcd'))
 		self.assertEqual(4, plu.strwidth_ucs_2(width_data, 'ＡＢ'))
 		if not sys.maxunicode < 0x10FFFF:
 			raise SkipTest('Can only test strwidth_ucs_2 in UCS-2 Pythons')
-		self.assertEqual(1, plu.strwidth_ucs_2(width_data, '\ud83d\udc8e'))
+		self.assertEqual(U1F48E_WIDTH, plu.strwidth_ucs_2(width_data, '\ud83d\udc8e'))
 
 
 class TestVCS(TestCase):