This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Fix a (back)slash bug in a regex, added with the regex itself.
[perl5.git] / TestInit.pm
CommitLineData
4343e7c3 1# This is a replacement for the old BEGIN preamble which heads (or
db7c4376 2# should head) up every core test program to prepare it for running.
4343e7c3
MS
3# Now instead of:
4#
5# BEGIN {
6# chdir 't' if -d 't';
7# @INC = '../lib';
8# }
9#
c1b78184
MS
10# Its primary purpose is to clear @INC so core tests don't pick up
11# modules from an installed Perl.
12#
db7c4376
PG
13# t/TEST will use -MTestInit. You may "use TestInit" in the test
14# programs but it is not required.
4343e7c3 15#
db7c4376
PG
16# P.S. This documentation is not in POD format in order to avoid
17# problems when there are fundamental bugs in perl.
4343e7c3 18
18fc9488
DM
19package TestInit;
20
5c9e8bc6 21$VERSION = 1.04;
2af1ab88 22
5ed59b83
NC
23# Let tests know they're running in the perl core. Useful for modules
24# which live dual lives on CPAN.
e447daf9
NC
25# Don't interfere with the taintedness of %ENV, this could perturbate tests.
26# This feels like a better solution than the original, from
27# http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2003-07/msg00154.html
28$ENV{PERL_CORE} = $^X;
2adbc9b6 29
2adbc9b6
NC
30sub import {
31 my $self = shift;
b6800926 32 my @up_2_t = ('../../lib', '../../t');
b6800926 33 my ($abs, $chdir, $setopt);
2adbc9b6
NC
34 foreach (@_) {
35 if ($_ eq 'U2T') {
09e28dd9 36 @INC = @up_2_t;
b6800926 37 $setopt = 1;
76cc22ec 38 } elsif ($_ eq 'U1') {
09e28dd9 39 @INC = '../lib';
b6800926 40 $setopt = 1;
2adbc9b6
NC
41 } elsif ($_ eq 'NC') {
42 delete $ENV{PERL_CORE}
43 } elsif ($_ eq 'A') {
44 $abs = 1;
a14453b9
NC
45 } elsif ($_ eq 'T') {
46 $chdir = '..'
47 unless -f 't/TEST' && -f 'MANIFEST' && -d 'lib' && -d 'ext';
09e28dd9 48 @INC = 'lib';
a14453b9 49 $setopt = 1;
2adbc9b6
NC
50 } else {
51 die "Unknown option '$_'";
52 }
53 }
54
b6800926
NC
55 # Need to default. This behaviour is consistent with previous behaviour,
56 # as the equivalent of this code used to be run at the top level, hence
57 # would happen (unconditionally) before import() was called.
09e28dd9 58 unless ($setopt) {
b6800926
NC
59 if (-f 't/TEST' && -f 'MANIFEST' && -d 'lib' && -d 'ext') {
60 # We're being run from the top level. Try to change directory, and
61 # set things up correctly. This is a 90% solution, but for
62 # hand-running tests, that's good enough
d36b6fc6 63 if ($0 =~ s!^((?:ext|dist|cpan)[\\/][^\\/]+)[\\/](.*\.t)$!$2!) {
b6800926
NC
64 # Looks like a test in ext.
65 $chdir = $1;
09e28dd9 66 @INC = @up_2_t;
b6800926
NC
67 $setopt = 1;
68 $^X =~ s!^\.([/\\])!..$1..$1!;
69 } else {
70 $chdir = 't';
09e28dd9 71 @INC = '../lib';
b6800926
NC
72 $setopt = $0 =~ m!^lib/!;
73 }
74 } else {
75 # (likely) we're being run by t/TEST or t/harness, and we're a test
76 # in t/
09e28dd9 77 @INC = '../lib';
2adbc9b6 78 }
b6800926
NC
79 }
80
81 if (defined $chdir) {
82 chdir $chdir or die "Can't chdir '$chdir': $!";
83 }
84
85 if ($abs) {
2adbc9b6
NC
86 require File::Spec::Functions;
87 # Forcibly untaint this.
09e28dd9 88 @INC = map { $_ = File::Spec::Functions::rel2abs($_); /(.*)/; $1 } @INC;
2adbc9b6
NC
89 $^X = File::Spec::Functions::rel2abs($^X);
90 }
91
db6ebcbf
NC
92 if ($setopt) {
93 my $sep;
94 if ($^O eq 'VMS') {
95 $sep = '|';
96 } elsif ($^O eq 'MSWin32') {
97 $sep = ';';
98 } else {
99 $sep = ':';
100 }
101
09e28dd9 102 my $lib = join $sep, @INC;
db6ebcbf
NC
103 if (exists $ENV{PERL5LIB}) {
104 $ENV{PERL5LIB} = $lib . substr $ENV{PERL5LIB}, 0, 0;
105 } else {
106 $ENV{PERL5LIB} = $lib;
107 }
108 }
09e28dd9
NC
109
110 push @INC, '.' unless ${^TAINT};
5ed59b83 111}
a1910616 112
7a315204 113$0 =~ s/\.dp$//; # for the test.deparse make target
ec5f1610 1141;