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/* psx-basic.c: Test POSIX basic regular expressions. */
#include "test.h"
void
test_posix_basic ()
{
/* Intervals can only match up to RE_DUP_MAX occurences of anything. */
char dup_max_plus_one[6];
sprintf (dup_max_plus_one, "%d", RE_DUP_MAX + 1);
printf ("\nStarting POSIX basic tests.\n");
t = posix_basic_test;
re_set_syntax (RE_SYNTAX_POSIX_MINIMAL_BASIC);
test_posix_generic ();
printf ("\nContinuing POSIX basic tests.\n");
/* Grouping tests that are not the same. */
test_should_match = false;
invalid_pattern (REG_EPAREN, PARENS_TO_OPS ("a)"));
test_should_match = true;
/* Special characters. */
MATCH_SELF ("*");
test_match ("\\(*\\)", "*");
test_match ("\\(^*\\)", "*");
test_match ("**", "***");
test_match ("***", "****");
MATCH_SELF ("{"); /* of extended... */
MATCH_SELF ("()"); /* also non-Posix. */
MATCH_SELF ("a+");
MATCH_SELF ("a?");
MATCH_SELF ("a|b");
MATCH_SELF ("a|"); /* No alternations, */
MATCH_SELF ("|a"); /* so OK if empty. */
MATCH_SELF ("a||");
test_match ("\\(|a\\)", "|a");
test_match ("\\(a|\\)", "a|");
test_match ("a\\+", "a+");
test_match ("a\\?", "a?");
test_match ("a\\|b", "a|b");
test_match ("^*", "*");
test_match ("^+", "+");
test_match ("^?", "?");
test_match ("^{", "{");
/* Valid subexpressions
(empty) in basic only. */
test_match ("\\(\\)", "");
test_match ("a\\(\\)", "a");
test_match ("\\(\\)b", "b");
test_match ("a\\(\\)b", "ab");
TEST_REGISTERS ("a\\(\\)b", "ab", 0, 2, 1, 1, -1, -1);
test_match ("\\(\\)*", "");
test_match ("\\(\\(\\)\\)*", "");
/* Valid back references. */
/* N.B.: back references to subexpressions that include a * are
undefined in the spec. The tests are in here to see if we handle
the situation consistently, but if it fails any of them, it doesn't
matter. */
test_match ("\\(\\)\\1", "");
TEST_REGISTERS ("\\(\\)\\1", "", 0, 0, 0, 0, -1, -1);
test_match ("\\(\\(\\)\\)\\(\\)\\2", "");
test_match ("\\(a\\)\\1", "aa");
TEST_REGISTERS ("\\(a\\)\\1", "aa", 0, 2, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a\\)\\1", "xaax", 1, 3, 1, 2, -1, -1);
test_match ("\\(\\(a\\)\\)\\1", "aa");
test_match ("\\(a\\)\\(b\\)\\2\\1", "abba");
test_match ("\\(a\\)*\\1", "aa");
TEST_REGISTERS ("\\(a\\)*\\1", "aa", 0, 2, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a\\)*\\1", "xaax", 0, 0, -1, -1, -1, -1);
test_match ("\\(\\(a\\)\\2b\\)*", "aab");
TEST_REGISTERS ("\\(\\(a\\)\\2b\\)*", "aab", 0, 3, 0, 3, 0, 1);
TEST_REGISTERS ("\\(\\(a\\)\\2b\\)*", "xaabx", 0, 0, -1, -1, -1, -1);
test_match ("\\(a*\\)*\\1", "");
test_match ("\\(a*\\)*\\1", "aa");
TEST_REGISTERS ("\\(a*\\)*\\1", "aa", 0, 2, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a*\\)*\\1", "xaax", 0, 0, 0, 0, -1, -1);
test_match ("\\(a*\\)*\\1", "");
test_match ("\\(a*\\)*\\1", "aa");
test_match ("\\(\\(a*\\)*\\)*\\1", "aa");
test_match ("\\(ab*\\)*\\1", "abab");
TEST_REGISTERS ("\\(ab*\\)*\\1", "abab", 0, 4, 0, 2, -1, -1);
TEST_REGISTERS ("\\(ab*\\)*\\1", "xababx", 0, 0, -1, -1, -1, -1);
test_match ("\\(a*\\)ab\\1", "aaba");
TEST_REGISTERS ("\\(a*\\)ab\\1", "aaba", 0, 4, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a*\\)ab\\1", "xaabax", 1, 5, 1, 2, -1, -1);
test_match ("\\(a*\\)*ab\\1", "aaba");
TEST_REGISTERS ("\\(a*\\)*ab\\1", "aaba", 0, 4, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a*\\)*ab\\1", "xaabax", 1, 5, 1, 2, -1, -1);
test_match ("\\(\\(a*\\)b\\)*\\2", "abb");
TEST_REGISTERS ("\\(\\(a*\\)b\\)*\\2", "abb", 0, 3, 2, 3, 2, 2);
TEST_REGISTERS ("\\(\\(a*\\)b\\)*\\2", "xabbx", 0, 0, -1, -1, -1, -1);
/* Different from above. */
test_match ("\\(\\(a*\\)b*\\)*\\2", "aa");
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "aa", 0, 2, 0, 1, 0, 1);
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "xaax", 0, 0, 0, 0, 0, 0);
test_match ("\\(\\(a*\\)b*\\)*\\2", "aba");
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "aba", 0, 3, 0, 2, 0, 1);
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "xabax", 0, 0, 0, 0, 0, 0);
test_match ("\\(\\(a*\\)b\\)*\\2", "aababa");
TEST_REGISTERS ("\\(\\(a*\\)b\\)*\\2", "aababa", 0, 6, 3, 5, 3, 4);
TEST_REGISTERS ("\\(\\(a*\\)b\\)*\\2", "xaababax", 0, 0, -1, -1, -1, -1);
test_match ("\\(\\(a*\\)b*\\)*\\2", "aabaa");
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "aabaa", 0, 5, 0, 3, 0, 2);
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "xaabaax", 0, 0, 0, 0, 0, 0);
test_match ("\\(\\(a*\\)b*\\)*\\2", "aabbaa");
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "aabbaa", 0, 6, 0, 4, 0, 2);
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "xaabbaax", 0, 0, 0, 0, 0, 0);
test_match ("\\(\\(a*\\)b*\\)*\\2", "abaabaa");
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "abaabaa", 0, 7, 2, 5, 2, 4);
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2", "xaababaax", 0, 0, 0, 0, 0, 0);
test_match ("\\(\\(a*\\)b*\\)*a\\2", "aabaaa");
TEST_REGISTERS ("\\(\\(a*\\)b*a\\)*\\2", "aabaaa", 0, 6, 0, 3, 0, 2);
TEST_REGISTERS ("\\(\\(a*\\)b*a\\)*\\2", "xaabaax", 0, 0, -1, -1, -1, -1);
test_match ("\\(\\(a*\\)b*\\)*\\2a", "aabaaa");
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2a", "aabaaa", 0, 6, 0, 3, 0, 2);
TEST_REGISTERS ("\\(\\(a*\\)b*\\)*\\2a", "xaabaaax", 1, 7, 1, 4, 1, 3);
test_match ("\\(\\(a*\\)b\\)*\\2\\1", "abaabaaaab");
TEST_REGISTERS ("\\(\\(a*\\)b\\)*\\2\\1", "abaabaaaab", 0, 10, 2, 5, 2, 4);
/* We are matching the empty string here. */
TEST_REGISTERS ("\\(\\(a*\\)b\\)*\\2\\1", "xabaabaaaabx", 0, 0, -1, -1, -1, -1);
test_match ("\\(a*b\\)\\1", "abab");
test_match ("\\(a\\)\\1\\1", "aaa");
test_match ("\\(a\\(c\\)d\\)\\1\\2", "acdacdc");
test_match ("\\(a\\)\\1*", "aaa");
TEST_REGISTERS ("\\(a\\)\\1*", "aaa", 0, 3, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a\\)\\1*", "xaaax", 1, 4, 1, 2, -1, -1);
test_match ("\\(a\\)\\{1,3\\}b\\1", "aba");
TEST_REGISTERS ("\\(a\\)\\{1,3\\}b\\1", "aba", 0, 3, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a\\)\\{1,3\\}b\\1", "xabax", 1, 4, 1, 2, -1, -1);
test_match ("\\(\\(a\\)\\2\\)*", "aaaa"); /* rms? */
TEST_REGISTERS ("\\(\\(a*b\\)\\2\\)*", "bbabab", 0, 6, 2, 6, 2, 4); /* rms? */
test_match ("\\(\\(a\\)\\1\\)*", "a1a1");
test_match ("\\(\\(a\\)\\2\\)\\1", "aaaa");
test_match ("\\(\\(a*\\)\\2\\)\\1", "aaaa");
TEST_REGISTERS ("\\(\\(a*\\)\\2\\)\\1", "aaaa", 0, 4, 0, 2, 0, 1);
TEST_REGISTERS ("\\(\\(a*\\)\\2\\)\\1", "xaaaax", 0, 0, 0, 0, 0, 0);
test_match ("\\{1\\}", "{1}");
test_match ("^\\{1\\}", "{1}");
test_match ("\\(a\\)\\1\\{1,2\\}", "aaa");
TEST_REGISTERS ("\\(a\\)\\1\\{1,2\\}", "aaa", 0, 3, 0, 1, -1, -1);
TEST_REGISTERS ("\\(a\\)\\1\\{1,2\\}", "xaaax", 1, 4, 1, 2, -1, -1);
/* Per POSIX D11.1 p. 109, leftmost longest match. */
test_match (PARENS_TO_OPS ("(.*).*\\1"), "abcabc");
/* Per POSIX D11.1, p. 125, leftmost longest match. */
test_match (PARENS_TO_OPS ("(ac*)c*d[ac]*\\1"), "acdacaaa");
TEST_REGISTERS (PARENS_TO_OPS ("(ac*)c*d[ac]*\\1"), "acdacaaa",
0, 8, 0, 1, -1, -1);
/* Anchors become ordinary, sometimes. */
MATCH_SELF ("a^");
MATCH_SELF ("$a");
MATCH_SELF ("$^");
test_fastmap ("$a^", "$", 0, 0);
test_match ("$^*", "$^^");
test_match ("\\($^\\)", "$^");
test_match ("$*", "$$");
/* xx -- known bug, solution pending test_match ("^^$", "^"); */
test_match ("$\\{0,\\}", "$$");
TEST_SEARCH ("^$*", "$$", 0, 2);
TEST_SEARCH ("^$\\{0,\\}", "$$", 0, 2);
MATCH_SELF ("2^10");
MATCH_SELF ("$HOME");
MATCH_SELF ("$1.35");
/* Basic regular expressions, continued; these don't match their strings. */
test_should_match = false;
invalid_pattern (REG_EESCAPE, "\\(a\\");
/* Invalid back references. */
test_match ("\\(a\\)\\1", "ab");
test_match ("\\(a\\)\\1\\1", "aab");
test_match ("\\(a\\)\\(b\\)\\2\\1", "abab");
test_match ("\\(a\\(c\\)d\\)\\1\\2", "acdc");
test_match ("\\(a*b\\)\\1", "abaab");
test_match ("\\(a\\)\\1*", "aaaaaaaaaab");
test_match ("\\(\\(a\\)\\1\\)*", "aaa");
invalid_pattern (REG_ESUBREG, "\\1");
invalid_pattern (REG_ESUBREG, "\\(a\\)\\2");
test_match ("\\(\\(a\\)\\2\\)*", "abaa");
test_match ("\\(\\(a\\)\\1\\)*", "a");
test_match ("\\(\\(a\\)\\2\\)\\1", "abaa");
test_match ("\\(\\(a*\\)\\2\\)\\1", "abaa");
/* Invalid intervals. */
invalid_pattern (REG_EBRACE, "a\\{");
invalid_pattern (REG_BADBR, "a\\{-1");
invalid_pattern (REG_BADBR, concat ("a\\{", (char *)dup_max_plus_one));
invalid_pattern (REG_BADBR, concat (concat ("a\\{", (char *)dup_max_plus_one), ","));
invalid_pattern (REG_BADBR, "a\\{1,0");
invalid_pattern (REG_EBRACE, "a\\{1");
invalid_pattern (REG_EBRACE, "a\\{0,");
invalid_pattern (REG_EBRACE, "a\\{0,1");
invalid_pattern (REG_EBRACE, "a\\{0,1}");
printf ("\nFinished POSIX basic tests.\n");
}
/*
Local variables:
make-backup-files: t
version-control: t
trim-versions-without-asking: nil
End:
*/
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