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-rw-r--r--tests/unistr/test-u8-prev.c315
1 files changed, 315 insertions, 0 deletions
diff --git a/tests/unistr/test-u8-prev.c b/tests/unistr/test-u8-prev.c
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+++ b/tests/unistr/test-u8-prev.c
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+/* Test of u8_prev() 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 "macros.h"
+
+static int
+check (const uint8_t *input, size_t input_length, ucs4_t *puc)
+{
+ ucs4_t uc;
+
+ /* Test recognition when at the beginning of the string. */
+ if (u8_prev (&uc, input + input_length, input) != input)
+ return 1;
+
+ /* Test recognition when preceded by a 1-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+ ucs4_t uc1;
+
+ ptr = buf;
+ *ptr++ = 'x';
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ if (u8_prev (&uc1, ptr + input_length, buf) != ptr)
+ return 2;
+ if (uc1 != uc)
+ return 3;
+ }
+
+ /* Test recognition when preceded by a 2-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+ ucs4_t uc1;
+
+ ptr = buf;
+ *ptr++ = 0xC3;
+ *ptr++ = 0x97;
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ if (u8_prev (&uc1, ptr + input_length, buf) != ptr)
+ return 4;
+ if (uc1 != uc)
+ return 5;
+ }
+
+ /* Test recognition when preceded by a 3-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+ ucs4_t uc1;
+
+ ptr = buf;
+ *ptr++ = 0xE2;
+ *ptr++ = 0x84;
+ *ptr++ = 0x82;
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ if (u8_prev (&uc1, ptr + input_length, buf) != ptr)
+ return 6;
+ if (uc1 != uc)
+ return 7;
+ }
+
+ /* Test recognition when preceded by a 4-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+ ucs4_t uc1;
+
+ ptr = buf;
+ *ptr++ = 0xF0;
+ *ptr++ = 0x9D;
+ *ptr++ = 0x94;
+ *ptr++ = 0x9E;
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ if (u8_prev (&uc1, ptr + input_length, buf) != ptr)
+ return 8;
+ if (uc1 != uc)
+ return 9;
+ }
+
+ *puc = uc;
+ return 0;
+}
+
+static int
+check_invalid (const uint8_t *input, size_t input_length)
+{
+ ucs4_t uc;
+
+ /* Test recognition when at the beginning of the string. */
+ uc = 0xBADFACE;
+ if (u8_prev (&uc, input + input_length, input) != NULL)
+ return 1;
+ if (uc != 0xBADFACE)
+ return 2;
+
+ /* Test recognition when preceded by a 1-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+
+ ptr = buf;
+ *ptr++ = 'x';
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ uc = 0xBADFACE;
+ if (u8_prev (&uc, ptr + input_length, buf) != NULL)
+ return 3;
+ if (uc != 0xBADFACE)
+ return 4;
+ }
+
+ /* Test recognition when preceded by a 2-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+
+ ptr = buf;
+ *ptr++ = 0xC3;
+ *ptr++ = 0x97;
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ uc = 0xBADFACE;
+ if (u8_prev (&uc, ptr + input_length, buf) != NULL)
+ return 5;
+ if (uc != 0xBADFACE)
+ return 6;
+ }
+
+ /* Test recognition when preceded by a 3-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+
+ ptr = buf;
+ *ptr++ = 0xE2;
+ *ptr++ = 0x84;
+ *ptr++ = 0x82;
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ uc = 0xBADFACE;
+ if (u8_prev (&uc, ptr + input_length, buf) != NULL)
+ return 7;
+ if (uc != 0xBADFACE)
+ return 8;
+ }
+
+ /* Test recognition when preceded by a 4-unit character. */
+ {
+ uint8_t buf[100];
+ uint8_t *ptr;
+ size_t i;
+
+ ptr = buf;
+ *ptr++ = 0xF0;
+ *ptr++ = 0x9D;
+ *ptr++ = 0x94;
+ *ptr++ = 0x9E;
+ for (i = 0; i < input_length; i++)
+ ptr[i] = input[i];
+
+ uc = 0xBADFACE;
+ if (u8_prev (&uc, ptr + input_length, buf) != NULL)
+ return 9;
+ if (uc != 0xBADFACE)
+ return 10;
+ }
+
+ return 0;
+}
+
+int
+main ()
+{
+ ucs4_t uc;
+
+ /* Test ISO 646 unit input. */
+ {
+ ucs4_t c;
+ uint8_t buf[1];
+
+ for (c = 0; c < 0x80; c++)
+ {
+ buf[0] = c;
+ uc = 0xBADFACE;
+ ASSERT (check (buf, 1, &uc) == 0);
+ ASSERT (uc == c);
+ }
+ }
+
+ /* Test 2-byte character input. */
+ {
+ static const uint8_t input[] = { 0xC3, 0x97 };
+ uc = 0xBADFACE;
+ ASSERT (check (input, SIZEOF (input), &uc) == 0);
+ ASSERT (uc == 0x00D7);
+ }
+
+ /* Test 3-byte character input. */
+ {
+ static const uint8_t input[] = { 0xE2, 0x82, 0xAC };
+ uc = 0xBADFACE;
+ ASSERT (check (input, SIZEOF (input), &uc) == 0);
+ ASSERT (uc == 0x20AC);
+ }
+
+ /* Test 4-byte character input. */
+ {
+ static const uint8_t input[] = { 0xF4, 0x8F, 0xBF, 0xBD };
+ uc = 0xBADFACE;
+ ASSERT (check (input, SIZEOF (input), &uc) == 0);
+ ASSERT (uc == 0x10FFFD);
+ }
+
+ /* Test incomplete/invalid 1-byte input. */
+ {
+ static const uint8_t input[] = { 0xC1 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xC3 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xE2 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xF4 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xFE };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+
+ /* Test incomplete/invalid 2-byte input. */
+ {
+ static const uint8_t input[] = { 0xE0, 0x9F };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xE2, 0x82 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xE2, 0xD0 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xF0, 0x8F };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xF3, 0x8F };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xF3, 0xD0 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+
+ /* Test incomplete/invalid 3-byte input. */
+ {
+ static const uint8_t input[] = { 0xF3, 0x8F, 0xBF };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xF3, 0xE4, 0xBF };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+ {
+ static const uint8_t input[] = { 0xF3, 0x8F, 0xD0 };
+ ASSERT (check_invalid (input, SIZEOF (input)) == 0);
+ }
+
+ return 0;
+}
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