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-rw-r--r--tests/unistr/test-u16-to-u8.c159
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diff --git a/tests/unistr/test-u16-to-u8.c b/tests/unistr/test-u16-to-u8.c
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+/* Test of u16_to_u8() function.
+ Copyright (C) 2010 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
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2010. */
+
+#include <config.h>
+
+#include "unistr.h"
+
+#include <errno.h>
+
+#include "macros.h"
+
+static int
+check (const uint16_t *input, size_t input_length,
+ const uint8_t *expected, size_t expected_length)
+{
+ size_t length;
+ uint8_t *result;
+
+ /* Test return conventions with resultbuf == NULL. */
+ result = u16_to_u8 (input, input_length, NULL, &length);
+ if (!(result != NULL))
+ return 1;
+ if (!(length == expected_length))
+ return 2;
+ if (!(u8_cmp (result, expected, expected_length) == 0))
+ return 3;
+ free (result);
+
+ /* Test return conventions with resultbuf too small. */
+ if (expected_length > 0)
+ {
+ uint8_t *preallocated;
+
+ length = expected_length - 1;
+ preallocated = (uint8_t *) malloc (length * sizeof (uint8_t));
+ result = u16_to_u8 (input, input_length, preallocated, &length);
+ if (!(result != NULL))
+ return 4;
+ if (!(result != preallocated))
+ return 5;
+ if (!(length == expected_length))
+ return 6;
+ if (!(u8_cmp (result, expected, expected_length) == 0))
+ return 7;
+ free (result);
+ free (preallocated);
+ }
+
+ /* Test return conventions with resultbuf large enough. */
+ {
+ uint8_t *preallocated;
+
+ length = expected_length;
+ preallocated = (uint8_t *) malloc (length * sizeof (uint8_t));
+ result = u16_to_u8 (input, input_length, preallocated, &length);
+ if (!(result != NULL))
+ return 8;
+ if (!(preallocated == NULL || result == preallocated))
+ return 9;
+ if (!(length == expected_length))
+ return 10;
+ if (!(u8_cmp (result, expected, expected_length) == 0))
+ return 11;
+ free (preallocated);
+ }
+
+ return 0;
+}
+
+int
+main ()
+{
+ /* Empty string. */
+ ASSERT (check (NULL, 0, NULL, 0) == 0);
+
+ /* Simple string. */
+ { /* "Grüß Gott. Здравствуйте! x=(-b±sqrt(b²-4ac))/(2a) 日本語,中文,한글" */
+ static const uint16_t input[] =
+ { 'G', 'r', 0x00FC, 0x00DF, ' ', 'G', 'o', 't', 't', '.', ' ',
+ 0x0417, 0x0434, 0x0440, 0x0430, 0x0432, 0x0441, 0x0442, 0x0432, 0x0443,
+ 0x0439, 0x0442, 0x0435, '!', ' ',
+ 'x', '=', '(', '-', 'b', 0x00B1, 's', 'q', 'r', 't', '(', 'b', 0x00B2,
+ '-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')', ' ', ' ',
+ 0x65E5, 0x672C, 0x8A9E, ',', 0x4E2D, 0x6587, ',', 0xD55C, 0xAE00, '\n'
+ };
+ static const uint8_t expected[] =
+ { 'G', 'r', 0xC3, 0xBC, 0xC3, 0x9F, ' ', 'G', 'o', 't', 't', '.', ' ',
+ 0xD0, 0x97, 0xD0, 0xB4, 0xD1, 0x80, 0xD0, 0xB0, 0xD0, 0xB2, 0xD1, 0x81,
+ 0xD1, 0x82, 0xD0, 0xB2, 0xD1, 0x83, 0xD0, 0xB9, 0xD1, 0x82, 0xD0, 0xB5,
+ '!', ' ', 'x', '=', '(', '-', 'b', 0xC2, 0xB1, 's', 'q', 'r', 't', '(',
+ 'b', 0xC2, 0xB2, '-', '4', 'a', 'c', ')', ')', '/', '(', '2', 'a', ')',
+ ' ', ' ', 0xE6, 0x97, 0xA5, 0xE6, 0x9C, 0xAC, 0xE8, 0xAA, 0x9E, ',',
+ 0xE4, 0xB8, 0xAD, 0xE6, 0x96, 0x87, ',',
+ 0xED, 0x95, 0x9C, 0xEA, 0xB8, 0x80, '\n'
+ };
+ ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
+ }
+
+ /* String with characters outside the BMP. */
+ {
+ static const uint16_t input[] =
+ { '-', '(', 0xD835, 0xDD1E, 0x00D7, 0xD835, 0xDD1F, ')', '=',
+ 0xD835, 0xDD1F, 0x00D7, 0xD835, 0xDD1E
+ };
+ static const uint8_t expected[] =
+ { '-', '(', 0xF0, 0x9D, 0x94, 0x9E, 0xC3, 0x97, 0xF0, 0x9D, 0x94, 0x9F,
+ ')', '=', 0xF0, 0x9D, 0x94, 0x9F, 0xC3, 0x97, 0xF0, 0x9D, 0x94, 0x9E
+ };
+ ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
+ }
+
+ /* Invalid input. */
+ {
+ static const uint16_t input[] = { 'x', 0xDD1E, 0xD835, 'y' };
+#if 0 /* Currently invalid input is rejected, not accommodated. */
+ static const uint8_t expected[] =
+ { 'x', 0xEF, 0xBF, 0xBD, 0xEF, 0xBF, 0xBD, 'y' };
+ ASSERT (check (input, SIZEOF (input), expected, SIZEOF (expected)) == 0);
+#else
+ size_t length;
+ uint8_t *result;
+ uint8_t preallocated[10];
+
+ /* Test return conventions with resultbuf == NULL. */
+ result = u16_to_u8 (input, SIZEOF (input), NULL, &length);
+ ASSERT (result == NULL);
+ ASSERT (errno == EILSEQ);
+
+ /* Test return conventions with resultbuf too small. */
+ length = 1;
+ result = u16_to_u8 (input, SIZEOF (input), preallocated, &length);
+ ASSERT (result == NULL);
+ ASSERT (errno == EILSEQ);
+
+ /* Test return conventions with resultbuf large enough. */
+ length = SIZEOF (preallocated);
+ result = u16_to_u8 (input, SIZEOF (input), preallocated, &length);
+ ASSERT (result == NULL);
+ ASSERT (errno == EILSEQ);
+#endif
+ }
+
+ return 0;
+}