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Fall back to "" overload for -X.
[perl5.git] / t / op / filetest.t
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42e55ab1
JH
1#!./perl
2
3# There are few filetest operators that are portable enough to test.
4# See pod/perlport.pod for details.
5
6BEGIN {
7 chdir 't' if -d 't';
20822f61 8 @INC = '../lib';
fbb0b3b3 9 require './test.pl';
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JH
10}
11
eb57363f 12use Config;
f6aa8023 13plan(tests => 28 + 27*10);
42e55ab1 14
fbb0b3b3
RGS
15ok( -d 'op' );
16ok( -f 'TEST' );
17ok( !-f 'op' );
18ok( !-d 'TEST' );
19ok( -r 'TEST' );
42e55ab1 20
22c35a8c 21# make sure TEST is r-x
ff2be7ed
NC
22eval { chmod 0555, 'TEST' or die "chmod 0555, 'TEST' failed: $!" };
23chomp ($bad_chmod = $@);
846f25a3
GW
24
25$oldeuid = $>; # root can read and write anything
26eval '$> = 1'; # so switch uid (may not be implemented)
27
28print "# oldeuid = $oldeuid, euid = $>\n";
29
fbb0b3b3
RGS
30SKIP: {
31 if (!$Config{d_seteuid}) {
32 skip('no seteuid');
33 }
34 elsif ($Config{config_args} =~/Dmksymlinks/) {
35 skip('we cannot chmod symlinks');
36 }
37 elsif ($bad_chmod) {
ff2be7ed 38 skip( $bad_chmod );
fbb0b3b3
RGS
39 }
40 else {
41 ok( !-w 'TEST' );
42 }
22c35a8c 43}
42e55ab1 44
846f25a3 45# Scripts are not -x everywhere so cannot test that.
42e55ab1 46
fd1e013e
F
47eval '$> = $oldeuid'; # switch uid back (may not be implemented)
48
49# this would fail for the euid 1
50# (unless we have unpacked the source code as uid 1...)
fbb0b3b3 51ok( -r 'op' );
42e55ab1 52
846f25a3
GW
53# this would fail for the euid 1
54# (unless we have unpacked the source code as uid 1...)
fbb0b3b3
RGS
55SKIP: {
56 if ($Config{d_seteuid}) {
57 ok( -w 'op' );
58 } else {
59 skip('no seteuid');
60 }
3eeba6fb 61}
42e55ab1 62
fbb0b3b3
RGS
63ok( -x 'op' ); # Hohum. Are directories -x everywhere?
64
65is( "@{[grep -r, qw(foo io noo op zoo)]}", "io op" );
66
67# Test stackability of filetest operators
42e55ab1 68
fbb0b3b3
RGS
69ok( defined( -f -d 'TEST' ) && ! -f -d _ );
70ok( !defined( -e 'zoo' ) );
71ok( !defined( -e -d 'zoo' ) );
72ok( !defined( -f -e 'zoo' ) );
73ok( -f -e 'TEST' );
74ok( -e -f 'TEST' );
75ok( defined(-d -e 'TEST') );
76ok( defined(-e -d 'TEST') );
77ok( ! -f -d 'op' );
78ok( -x -d -x 'op' );
79ok( (-s -f 'TEST' > 1), "-s returns real size" );
80ok( -f -s 'TEST' == 1 );
7294df96 81
e7d3eb55 82# now with an empty file
1ab9acc5
B
83my $tempfile = tempfile();
84open my $fh, ">", $tempfile;
e7d3eb55 85close $fh;
1ab9acc5
B
86ok( -f $tempfile );
87is( -s $tempfile, 0 );
88is( -f -s $tempfile, 0 );
89is( -s -f $tempfile, 0 );
90unlink $tempfile;
e7d3eb55 91
7294df96
RGS
92# test that _ is a bareword after filetest operators
93
94-f 'TEST';
95ok( -f _ );
96sub _ { "this is not a file name" }
97ok( -f _ );
d89f1457
BM
98
99my $over;
100{
101 package OverFtest;
102
d3ebc3eb
BM
103 use overload -X => sub {
104 $over = [overload::StrVal($_[0]), $_[1]];
105 "-$_[1]";
106 };
d89f1457 107}
f6aa8023
BM
108{
109 package OverString;
110
111 # No fallback. -X should fall back to string overload even without
112 # it.
113 use overload q/""/ => sub { $over = 1; "TEST" };
114}
115{
116 package OverBoth;
117
118 use overload
119 q/""/ => sub { "TEST" },
120 -X => sub { "-$_[1]" };
121}
122{
123 package OverNeither;
124
125 # Need fallback. Previous veraions of perl required 'fallback' to do
126 # -X operations on an object with no "" overload.
127 use overload
128 '+' => sub { 1 },
129 fallback => 1;
130}
131
132my $ft = bless [], "OverFtest";
133my $ftstr = overload::StrVal($ft);
134my $str = bless [], "OverString";
135my $both = bless [], "OverBoth";
136my $neither = bless [], "OverNeither";
137my $nstr = overload::StrVal($neither);
d89f1457 138
d89f1457 139for my $op (split //, "rwxoRWXOezsfdlpSbctugkTMBAC") {
d3ebc3eb 140 $over = [];
f6aa8023
BM
141 ok( my $rv = eval "-$op \$ft", "overloaded -$op succeeds" )
142 or diag( $@ );
143 is( $over->[0], $ftstr, "correct object for overloaded -$op" );
d89f1457
BM
144 is( $over->[1], $op, "correct op for overloaded -$op" );
145 is( $rv, "-$op", "correct return value for overloaded -$op");
f6aa8023
BM
146
147 $over = 0;
148 $rv = eval "-$op \$str";
149 ok( !$@, "-$op succeeds with string overloading" )
150 or diag( $@ );
151 is( $rv, eval "-$op 'TEST'", "correct -$op on string overload" );
152 is( $over, 1, "string overload called for -$op" );
153
154 $rv = eval "-$op \$both";
155 is( $rv, "-$op", "correct -$op on string/-X overload" );
156
157 $rv = eval "-$op \$neither";
158 ok( !$@, "-$op succeeds with random overloading" )
159 or diag( $@ );
160 is( $rv, eval "-$op \$nstr", "correct -$op with random overloading" );
d89f1457 161}
f6aa8023
BM
162
163is( -r -f $ft, "-r", "stacked overloaded -X" );