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[perl5.git] / t / porting / test_bootstrap.t
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1#!/perl -w
2use strict;
3
4# See "Writing a test" in perlhack.pod for the instructions about the order that
5# testing directories run, and which constructions should be avoided in the
6# early tests.
7
8# This regression tests ensures that the rules aren't accidentally overlooked.
9
10require './test.pl';
11
12plan('no_plan');
13
14open my $fh, '<', '../MANIFEST' or die "Can't open MANIFEST: $!";
15
16# Three tests in t/comp need to use require or use to get their job done:
17my %exceptions = (hints => "require './test.pl'",
18 parser => 'use DieDieDie',
19 proto => 'use strict',
20 );
21
22while (my $file = <$fh>) {
23 next unless $file =~ s!^t/!!;
24 chomp $file;
25 $file =~ s/\s+.*//;
26 next unless $file =~ m!\.t$!;
27
28 local $/;
29 open my $t, '<', $file or die "Can't open $file: $!";
30 my $contents = <$t>;
31 # Make sure that we don't match ourselves
32 unlike($contents, qr/use\s+Test::More/, "$file doesn't use Test::\QMore");
33 next unless $file =~ m!^base/! or $file =~ m!^comp!;
34
35 # Remove only the excepted constructions for the specific files.
36 if ($file =~ m!comp/(.*)\.t! && $exceptions{$1}) {
37 my $allowed = $exceptions{$1};
38 $contents =~ s/\Q$allowed//gs;
39 }
40
41 # All uses of use are allowed in t/comp/use.t
42 unlike($contents, qr/^\s*use\s+/m, "$file doesn't use use")
43 unless $file eq 'comp/use.t';
44 # All uses of require are allowed in t/comp/require.t
45 unlike($contents, qr/^\s*require\s+/m, "$file doesn't use require")
46 unless $file eq 'comp/require.t'
47}
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48
49# There are regression tests using test.pl that don't want PL_sawampersand set
50
51# This very much relies on a bug in the regexp implementation, but for now it's
52# the best way to work out whether PL_sawampersand is true.
53# Then again, PL_sawampersand *is* a bug, for precisely the reason that this
54# test can detect the behaviour change.
55
56isnt($INC{'./test.pl'}, undef, 'We loaded test.pl');
57ok("Perl rules" =~ /Perl/, 'Perl rules');
58is(eval '$&', undef, 'Nothing in test.pl mentioned $&');
59is(eval '$`', undef, 'Nothing in test.pl mentioned $`');
60is(eval '$\'', undef, 'Nothing in test.pl mentioned $\'');
61# Currently seeing any of the 3 triggers the setting of all 3.
62# $` and $' will be '' rather than undef if the regexp sets them.