From 5f2b09982312c98863eb9a8dfe2c608b81f58259 Mon Sep 17 00:00:00 2001
From: "Manuel A. Fernandez Montecelo" <manuel.montezelo@gmail.com>
Date: Thu, 26 May 2016 16:48:15 +0100
Subject: Imported Upstream version 0.9.6

---
 tests/unistr/test-u8-mbtouc.c | 161 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 160 insertions(+), 1 deletion(-)

(limited to 'tests/unistr/test-u8-mbtouc.c')

diff --git a/tests/unistr/test-u8-mbtouc.c b/tests/unistr/test-u8-mbtouc.c
index f6960a68..9e3b9601 100644
--- a/tests/unistr/test-u8-mbtouc.c
+++ b/tests/unistr/test-u8-mbtouc.c
@@ -1,5 +1,5 @@
 /* Test of u8_mbtouc() function.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2015 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -24,10 +24,169 @@
 
 #include "test-u8-mbtouc.h"
 
+static void
+test_safe_function (int (*my_u8_mbtouc) (ucs4_t *, const uint8_t *, size_t))
+{
+  ucs4_t uc;
+  int ret;
+
+  /* Test behaviour required by ISO 10646-1, sections R.7 and 2.3c, namely,
+     that a "malformed sequence" is interpreted in the same way as
+     "a character that is outside the adopted subset".
+     Reference:
+       Markus Kuhn: UTF-8 decoder capability and stress test
+       <http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt>
+       <http://www.w3.org/2001/06/utf-8-wrong/UTF-8-test.html>
+   */
+  /* 3.1. Test that each unexpected continuation byte is signalled as a
+     malformed sequence of its own.  */
+  {
+    static const uint8_t input[] = { '"', 0x80, 0xBF, 0x80, 0xBF, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 6);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 5);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 2, 4);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 3, 3);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 4, 2);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 5, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+  /* 3.2. Lonely start characters.  */
+  {
+    ucs4_t c;
+    uint8_t input[2];
+
+    for (c = 0xC0; c <= 0xFF; c++)
+      {
+        input[0] = c;
+        input[1] = ' ';
+
+        uc = 0xBADFACE;
+        ret = my_u8_mbtouc (&uc, input, 2);
+        ASSERT (ret == 1);
+        ASSERT (uc == 0xFFFD);
+      }
+  }
+  /* 3.3. Sequences with last continuation byte missing.  */
+  /* 3.3.1. 2-byte sequence with last byte missing.  */
+  {
+    static const uint8_t input[] = { '"', 0xC0, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 3);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 2);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 2, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+  /* 3.3.6. 2-byte sequence with last byte missing.  */
+  {
+    static const uint8_t input[] = { '"', 0xDF, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 3);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 2);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 2, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+  /* 3.3.2. 3-byte sequence with last byte missing.  */
+  {
+    static const uint8_t input[] = { '"', 0xE0, 0x80, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 4);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 3);
+    ASSERT (ret == 2);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 3, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+  /* 3.3.7. 3-byte sequence with last byte missing.  */
+  {
+    static const uint8_t input[] = { '"', 0xEF, 0xBF, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 4);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 3);
+    ASSERT (ret == 2);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 3, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+  /* 3.3.3. 4-byte sequence with last byte missing.  */
+  {
+    static const uint8_t input[] = { '"', 0xF0, 0x80, 0x80, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 5);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 4);
+    ASSERT (ret == 3);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 4, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+  /* 3.3.8. 4-byte sequence with last byte missing.  */
+  {
+    static const uint8_t input[] = { '"', 0xF7, 0xBF, 0xBF, '"' };
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input, 5);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 1, 4);
+    ASSERT (ret == 3);
+    ASSERT (uc == 0xFFFD);
+    uc = 0xBADFACE;
+    ret = my_u8_mbtouc (&uc, input + 4, 1);
+    ASSERT (ret == 1);
+    ASSERT (uc == 0x0022);
+  }
+}
+
 int
 main ()
 {
   test_function (u8_mbtouc);
+  test_safe_function (u8_mbtouc);
 
   return 0;
 }
-- 
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