This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Init PL_cop_seqmax to a high value under DEBUGGING
[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
5ed59b83 21$VERSION = 1.02;
2af1ab88 22
5ed59b83
NC
23# Let tests know they're running in the perl core. Useful for modules
24# which live dual lives on CPAN.
e447daf9
NC
25# Don't interfere with the taintedness of %ENV, this could perturbate tests.
26# This feels like a better solution than the original, from
27# http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2003-07/msg00154.html
28$ENV{PERL_CORE} = $^X;
2adbc9b6
NC
29
30sub new_inc {
31 if (${^TAINT}) {
32 @INC = @_;
33 } else {
34 @INC = (@_, '.');
35 }
36}
37
38sub set_opt {
39 my $sep;
40 if ($^O eq 'VMS') {
41 $sep = '|';
1ff5bc37 42 } elsif ($^O eq 'MSWin32') {
2adbc9b6
NC
43 $sep = ';';
44 } else {
45 $sep = ':';
46 }
47
48 my $lib = join $sep, @_;
49 if (exists $ENV{PERL5LIB}) {
50 $ENV{PERL5LIB} = $lib . substr $ENV{PERL5LIB}, 0, 0;
51 } else {
52 $ENV{PERL5LIB} = $lib;
53 }
54}
55
8fcfece7
NC
56my @up_2_t = ('../../lib', '../../t');
57# This is incompatible with the import options.
58if (-f 't/TEST' && -f 'MANIFEST' && -d 'lib' && -d 'ext') {
59 # We're being run from the top level. Try to change directory, and set
60 # things up correctly. This is a 90% solution, but for hand-running tests,
61 # that's good enough
a193a2db 62 if ($0 =~ s!^((?:ext|dist|cpan)[\\/][^\\/]+)[\//](.*\.t)$!$2!) {
8fcfece7
NC
63 # Looks like a test in ext.
64 chdir $1 or die "Can't chdir '$1': $!";
65 new_inc(@up_2_t);
982c4793
NC
66 set_opt(@up_2_t);
67 $^X =~ s!^\./!../../!;
68 $^X =~ s!^\.\\!..\\..\\!;
8fcfece7
NC
69 } else {
70 chdir 't' or die "Can't chdir 't': $!";
71 new_inc('../lib');
72 }
73} else {
74 new_inc('../lib');
75}
2adbc9b6
NC
76
77sub import {
78 my $self = shift;
79 my $abs;
80 foreach (@_) {
81 if ($_ eq 'U2T') {
8fcfece7 82 @new_inc = @up_2_t;
2adbc9b6
NC
83 } elsif ($_ eq 'NC') {
84 delete $ENV{PERL_CORE}
85 } elsif ($_ eq 'A') {
86 $abs = 1;
87 } else {
88 die "Unknown option '$_'";
89 }
90 }
91
92 if ($abs) {
93 if(!@new_inc) {
94 @new_inc = '../lib';
95 }
96 @INC = @new_inc;
97 require File::Spec::Functions;
98 # Forcibly untaint this.
99 @new_inc = map { $_ = File::Spec::Functions::rel2abs($_); /(.*)/; $1 }
100 @new_inc;
101 $^X = File::Spec::Functions::rel2abs($^X);
102 }
103
104 if (@new_inc) {
105 new_inc(@new_inc);
106 set_opt(@new_inc);
107 }
5ed59b83 108}
a1910616 109
7a315204 110$0 =~ s/\.dp$//; # for the test.deparse make target
ec5f1610
RH
1111;
112