Add CJK codecs support as discussed on python-dev. (SF #873597)

Several style fixes are suggested by Martin v. Loewis and
Marc-Andre Lemburg. Thanks!

1 files changed, 79 insertions, 0 deletions

diff --git a/Lib/test/test_multibytecodec.py b/Lib/test/test_multibytecodec.py
new file mode 100644
index 0000000000..f686b702da
--- /dev/null
+++ b/Lib/test/test_multibytecodec.py
@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+#
+# test_multibytecodec.py
+#   Unit test for multibytecodec itself
+#
+# $CJKCodecs: test_multibytecodec.py,v 1.5 2004/01/06 02:26:28 perky Exp $
+
+from test import test_support
+from test import test_multibytecodec_support
+import unittest, StringIO, codecs
+
+class Test_StreamWriter(unittest.TestCase):
+    if len(u'\U00012345') == 2: # UCS2
+        def test_gb18030(self):
+            s= StringIO.StringIO()
+            c = codecs.lookup('gb18030')[3](s)
+            c.write(u'123')
+            self.assertEqual(s.getvalue(), '123')
+            c.write(u'\U00012345')
+            self.assertEqual(s.getvalue(), '123\x907\x959')
+            c.write(u'\U00012345'[0])
+            self.assertEqual(s.getvalue(), '123\x907\x959')
+            c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')
+            self.assertEqual(s.getvalue(),
+                    '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
+            c.write(u'\U00012345'[0])
+            self.assertEqual(s.getvalue(),
+                    '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
+            self.assertRaises(UnicodeError, c.reset)
+            self.assertEqual(s.getvalue(),
+                    '123\x907\x959\x907\x959\x907\x959\x827\xcf5\x810\x851')
+
+        # standard utf-8 codecs has broken StreamReader
+        if test_multibytecodec_support.__cjkcodecs__:
+            def test_utf_8(self):
+                s= StringIO.StringIO()
+                c = codecs.lookup('utf-8')[3](s)
+                c.write(u'123')
+                self.assertEqual(s.getvalue(), '123')
+                c.write(u'\U00012345')
+                self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
+                c.write(u'\U00012345'[0])
+                self.assertEqual(s.getvalue(), '123\xf0\x92\x8d\x85')
+                c.write(u'\U00012345'[1] + u'\U00012345' + u'\uac00\u00ac')
+                self.assertEqual(s.getvalue(),
+                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
+                    '\xea\xb0\x80\xc2\xac')
+                c.write(u'\U00012345'[0])
+                self.assertEqual(s.getvalue(),
+                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
+                    '\xea\xb0\x80\xc2\xac')
+                c.reset()
+                self.assertEqual(s.getvalue(),
+                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
+                    '\xea\xb0\x80\xc2\xac\xed\xa0\x88')
+                c.write(u'\U00012345'[1])
+                self.assertEqual(s.getvalue(),
+                    '123\xf0\x92\x8d\x85\xf0\x92\x8d\x85\xf0\x92\x8d\x85'
+                    '\xea\xb0\x80\xc2\xac\xed\xa0\x88\xed\xbd\x85')
+
+    else: # UCS4
+        pass
+
+    def test_nullcoding(self):
+        self.assertEqual(''.decode('utf-8'), u'')
+        self.assertEqual(unicode('', 'utf-8'), u'')
+        self.assertEqual(u''.encode('utf-8'), '')
+
+    def test_str_decode(self):
+        self.assertEqual('abcd'.encode('utf-8'), 'abcd')
+
+def test_main():
+    suite = unittest.TestSuite()
+    suite.addTest(unittest.makeSuite(Test_StreamWriter))
+    test_support.run_suite(suite)
+
+if __name__ == "__main__":
+    test_main()
+