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Re: [perl #40302] sigtrap(3pm) man page is vague
[perl5.git] / t / op / regexp.t
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1#!./perl
2
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3# The tests are in a separate file 't/op/re_tests'.
4# Each line in that file is a separate test.
5# There are five columns, separated by tabs.
6#
7# Column 1 contains the pattern, optionally enclosed in C<''>.
8# Modifiers can be put after the closing C<'>.
9#
10# Column 2 contains the string to be matched.
11#
12# Column 3 contains the expected result:
13# y expect a match
14# n expect no match
15# c expect an error
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16# B test exposes a known bug in Perl, should be skipped
17# b test exposes a known bug in Perl, should be skipped if noamp
ad4f75a6 18#
1b1626e4 19# Columns 4 and 5 are used only if column 3 contains C<y> or C<c>.
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20#
21# Column 4 contains a string, usually C<$&>.
22#
23# Column 5 contains the expected result of double-quote
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24# interpolating that string after the match, or start of error message.
25#
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26# Column 6, if present, contains a reason why the test is skipped.
27# This is printed with "skipped", for harness to pick up.
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
95e8664e 41open(TESTS,'op/re_tests') || open(TESTS,'t/op/re_tests') || open(TESTS,':op:re_tests') ||
8d37f932 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$nulnul = "\0" x 2;
7fba1cd6 52$OP = $qr ? 'qr' : 'm';
9d116dd7 53
1462b684 54$| = 1;
c277df42 55print "1..$numtests\n# $iters iterations\n";
cfa4f241 56TEST:
378cc40b 57while (<TESTS>) {
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58 chomp;
59 s/\\n/\n/g;
ee595aa6 60 ($pat, $subject, $result, $repl, $expect, $reason) = split(/\t/,$_,6);
378cc40b 61 $input = join(':',$pat,$subject,$result,$repl,$expect);
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62 infty_subst(\$pat);
63 infty_subst(\$expect);
1b1626e4 64 $pat = "'$pat'" unless $pat =~ /^[:']/;
9d116dd7 65 $pat =~ s/(\$\{\w+\})/$1/eeg;
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66 $pat =~ s/\\n/\n/g;
67 $subject =~ s/(\$\{\w+\})/$1/eeg;
c277df42 68 $subject =~ s/\\n/\n/g;
b8c5462f 69 $expect =~ s/(\$\{\w+\})/$1/eeg;
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70 $expect =~ s/\\n/\n/g;
71 $expect = $repl = '-' if $skip_amp and $input =~ /\$[&\`\']/;
cf93c79d 72 $skip = ($skip_amp ? ($result =~ s/B//i) : ($result =~ s/B//));
906e884f 73 $reason = 'skipping $&' if $reason eq '' && $skip_amp;
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74 $result =~ s/B//i unless $skip;
75 for $study ('', 'study \$subject') {
c277df42 76 $c = $iters;
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77 if ($qr_embed) {
78 eval qq"
79 my \$RE = qr$pat;
80 $study;
81 \$match = (\$subject =~ /(?:)\$RE(?:)/) while \$c--;
82 \$got = \"$repl\";
83 ";
84 }
85 else {
86 eval qq"
87 $study;
88 \$match = (\$subject =~ $OP$pat) while \$c--;
89 \$got = \"$repl\";
90 ";
91 }
c277df42 92 chomp( $err = $@ );
cfa4f241 93 if ($result eq 'c') {
c277df42 94 if ($err !~ m!^\Q$expect!) { print "not ok $. (compile) $input => `$err'\n"; next TEST }
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95 last; # no need to study a syntax error
96 }
cf93c79d 97 elsif ( $skip ) {
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98 print "ok $. # skipped", length($reason) ? " $reason" : '', "\n";
99 next TEST;
cf93c79d 100 }
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101 elsif ($@) {
102 print "not ok $. $input => error `$err'\n"; next TEST;
103 }
cfa4f241 104 elsif ($result eq 'n') {
c277df42 105 if ($match) { print "not ok $. ($study) $input => false positive\n"; next TEST }
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106 }
107 else {
cfa4f241 108 if (!$match || $got ne $expect) {
c277df42 109 print "not ok $. ($study) $input => `$got', match=$match\n";
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110 next TEST;
111 }
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112 }
113 }
cfa4f241 114 print "ok $.\n";
378cc40b 115}
cfa4f241 116
378cc40b 117close(TESTS);
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118
119sub infty_subst # Special-case substitution
120{ # of $reg_infty and friends
121 my $tp = shift;
122 $$tp =~ s/,\$reg_infty_m}/,$reg_infty_m}/o;
123 $$tp =~ s/,\$reg_infty_p}/,$reg_infty_p}/o;
124 $$tp =~ s/,\$reg_infty}/,$reg_infty}/o;
125}