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In TestInit.pm, merge two substitutions into one.
[perl5.git] / TestInit.pm
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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.
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3# Now instead of:
4#
5# BEGIN {
6# chdir 't' if -d 't';
7# @INC = '../lib';
8# }
9#
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10# Its primary purpose is to clear @INC so core tests don't pick up
11# modules from an installed Perl.
12#
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13# t/TEST will use -MTestInit. You may "use TestInit" in the test
14# programs but it is not required.
4343e7c3 15#
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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
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19package TestInit;
20
5c9e8bc6 21$VERSION = 1.04;
2af1ab88 22
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23# Let tests know they're running in the perl core. Useful for modules
24# which live dual lives on CPAN.
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25# Don't interfere with the taintedness of %ENV, this could perturbate tests.
26# This feels like a better solution than the original, from
27# http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2003-07/msg00154.html
28$ENV{PERL_CORE} = $^X;
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29
30sub new_inc {
31 if (${^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') {
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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
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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!) {
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63 # Looks like a test in ext.
64 chdir $1 or die "Can't chdir '$1': $!";
65 new_inc(@up_2_t);
982c4793 66 set_opt(@up_2_t);
5c9e8bc6 67 $^X =~ s!^\.([/\\])!..$1..$1!;
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68 } else {
69 chdir 't' or die "Can't chdir 't': $!";
70 new_inc('../lib');
76cc22ec 71 set_opt('../lib') if $0 =~ m!^lib/!;
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72 }
73} else {
74 new_inc('../lib');
75}
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76
77sub import {
78 my $self = shift;
79 my $abs;
80 foreach (@_) {
81 if ($_ eq 'U2T') {
8fcfece7 82 @new_inc = @up_2_t;
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83 } elsif ($_ eq 'U1') {
84 @new_inc = '../lib';
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85 } elsif ($_ eq 'NC') {
86 delete $ENV{PERL_CORE}
87 } elsif ($_ eq 'A') {
88 $abs = 1;
89 } else {
90 die "Unknown option '$_'";
91 }
92 }
93
94 if ($abs) {
95 if(!@new_inc) {
96 @new_inc = '../lib';
97 }
98 @INC = @new_inc;
99 require File::Spec::Functions;
100 # Forcibly untaint this.
101 @new_inc = map { $_ = File::Spec::Functions::rel2abs($_); /(.*)/; $1 }
102 @new_inc;
103 $^X = File::Spec::Functions::rel2abs($^X);
104 }
105
106 if (@new_inc) {
107 new_inc(@new_inc);
108 set_opt(@new_inc);
109 }
5ed59b83 110}
a1910616 111
7a315204 112$0 =~ s/\.dp$//; # for the test.deparse make target
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1131;
114