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Re-instate stdio large file support via perlio.
[perl5.git] / t / op / regexp.t
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1#!./perl
2
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3# XXX known to leak scalars
4$ENV{PERL_DESTRUCT_LEVEL} = 0 unless $ENV{PERL_DESTRUCT_LEVEL} > 3;
eec2d3df 5
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6# The tests are in a separate file 't/op/re_tests'.
7# Each line in that file is a separate test.
8# There are five columns, separated by tabs.
9#
10# Column 1 contains the pattern, optionally enclosed in C<''>.
11# Modifiers can be put after the closing C<'>.
12#
13# Column 2 contains the string to be matched.
14#
15# Column 3 contains the expected result:
16# y expect a match
17# n expect no match
18# c expect an error
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19# B test exposes a known bug in Perl, should be skipped
20# b test exposes a known bug in Perl, should be skipped if noamp
ad4f75a6 21#
1b1626e4 22# Columns 4 and 5 are used only if column 3 contains C<y> or C<c>.
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23#
24# Column 4 contains a string, usually C<$&>.
25#
26# Column 5 contains the expected result of double-quote
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27# interpolating that string after the match, or start of error message.
28#
9d116dd7 29# \n in the tests are interpolated, as are variables of the form ${\w+}.
83e898de 30#
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31# If you want to add a regular expression test that can't be expressed
32# in this format, don't add it here: put it in op/pat.t instead.
c277df42 33
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34BEGIN {
35 chdir 't' if -d 't';
20822f61 36 @INC = '../lib';
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37}
38
c277df42 39$iters = shift || 1; # Poor man performance suite, 10000 is OK.
ad4f75a6 40
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41open(TESTS,'op/re_tests') || open(TESTS,'t/op/re_tests') ||
42 die "Can't open re_tests";
cfa4f241 43
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44while (<TESTS>) { }
45$numtests = $.;
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46seek(TESTS,0,0);
47$. = 0;
378cc40b 48
9d116dd7 49$bang = sprintf "\\%03o", ord "!"; # \41 would not be portable.
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50$ffff = chr(0xff) x 2;
51$nulnul = "\0" x 2;
9d116dd7 52
1462b684 53$| = 1;
c277df42 54print "1..$numtests\n# $iters iterations\n";
cfa4f241 55TEST:
378cc40b 56while (<TESTS>) {
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57 chomp;
58 s/\\n/\n/g;
59 ($pat, $subject, $result, $repl, $expect) = split(/\t/,$_);
378cc40b 60 $input = join(':',$pat,$subject,$result,$repl,$expect);
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61 infty_subst(\$pat);
62 infty_subst(\$expect);
1b1626e4 63 $pat = "'$pat'" unless $pat =~ /^[:']/;
9d116dd7 64 $pat =~ s/(\$\{\w+\})/$1/eeg;
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65 $pat =~ s/\\n/\n/g;
66 $subject =~ s/(\$\{\w+\})/$1/eeg;
c277df42 67 $subject =~ s/\\n/\n/g;
b8c5462f 68 $expect =~ s/(\$\{\w+\})/$1/eeg;
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69 $expect =~ s/\\n/\n/g;
70 $expect = $repl = '-' if $skip_amp and $input =~ /\$[&\`\']/;
cf93c79d 71 $skip = ($skip_amp ? ($result =~ s/B//i) : ($result =~ s/B//));
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72 # Certain tests don't work with utf8 (the re_test should be in UTF8)
73 $skip = 1 if ($^H &= ~0x00000008) && $pat =~ /\[:\^(alnum|print|word):\]/;
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74 $result =~ s/B//i unless $skip;
75 for $study ('', 'study \$subject') {
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76 $c = $iters;
77 eval "$study; \$match = (\$subject =~ m$pat) while \$c--; \$got = \"$repl\";";
78 chomp( $err = $@ );
cfa4f241 79 if ($result eq 'c') {
c277df42 80 if ($err !~ m!^\Q$expect!) { print "not ok $. (compile) $input => `$err'\n"; next TEST }
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81 last; # no need to study a syntax error
82 }
cf93c79d 83 elsif ( $skip ) {
b8c5462f 84 print "ok $. # skipped\n"; next TEST;
cf93c79d 85 }
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86 elsif ($@) {
87 print "not ok $. $input => error `$err'\n"; next TEST;
88 }
cfa4f241 89 elsif ($result eq 'n') {
c277df42 90 if ($match) { print "not ok $. ($study) $input => false positive\n"; next TEST }
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91 }
92 else {
cfa4f241 93 if (!$match || $got ne $expect) {
c277df42 94 print "not ok $. ($study) $input => `$got', match=$match\n";
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95 next TEST;
96 }
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97 }
98 }
cfa4f241 99 print "ok $.\n";
378cc40b 100}
cfa4f241 101
378cc40b 102close(TESTS);
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103
104sub infty_subst # Special-case substitution
105{ # of $reg_infty and friends
106 my $tp = shift;
107 $$tp =~ s/,\$reg_infty_m}/,$reg_infty_m}/o;
108 $$tp =~ s/,\$reg_infty_p}/,$reg_infty_p}/o;
109 $$tp =~ s/,\$reg_infty}/,$reg_infty}/o;
110}