This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Interix seems to have multi-arch so ask gcc where stuff is
[perl5.git] / t / op / filetest.t
CommitLineData
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';
42e55ab1
JH
10}
11
cd22fad3 12plan(tests => 50 + 27*14);
42e55ab1 13
8c5e482d
JK
14# Tests presume we are in t/op directory and that file 'TEST' is found
15# therein.
16is(-d 'op', 1, "-d: directory correctly identified");
17is(-f 'TEST', 1, "-f: plain file correctly identified");
18isnt(-f 'op', 1, "-f: directory is not a plain file");
19isnt(-d 'TEST', 1, "-d: plain file is not a directory");
20is(-r 'TEST', 1, "-r: file readable by effective uid/gid not found");
42e55ab1 21
e687eccd
NC
22# Make a read only file. This happens to be empty, so we also use it later.
23my $ro_empty_file = tempfile();
d4188802
NC
24
25{
e687eccd 26 open my $fh, '>', $ro_empty_file or die "open $fh: $!";
d4188802
NC
27 close $fh or die "close $fh: $!";
28}
29
e687eccd 30chmod 0555, $ro_empty_file or die "chmod 0555, '$ro_empty_file' failed: $!";
846f25a3 31
fbb0b3b3 32SKIP: {
dcefe67b
NC
33 my $restore_root;
34 if ($> == 0) {
35 # root can read and write anything, so switch uid (may not be
36 # implemented)
37 eval '$> = 1';
38
39 skip("Can't drop root privs to test read-only files") if $> == 0;
40 note("Dropped root privs to test read-only files. \$> == $>");
41 ++$restore_root;
fbb0b3b3 42 }
42e55ab1 43
8c5e482d 44 isnt(-w $ro_empty_file, 1, "-w: file writable by effective uid/gid");
42e55ab1 45
dcefe67b
NC
46 if ($restore_root) {
47 # If the previous assignment to $> worked, so should this:
48 $> = 0;
49 note("Restored root privs after testing read-only files. \$> == $>");
50 }
51}
fd1e013e 52
64f0b68d 53# these would fail for the euid 1
fd1e013e 54# (unless we have unpacked the source code as uid 1...)
8c5e482d
JK
55is(-r 'op', 1, "-r: directory readable by effective uid/gid");
56is(-w 'op', 1, "-w: directory writable by effective uid/gid");
57is(-x 'op', 1, "-x: executable by effective uid/gid"); # Hohum. Are directories -x everywhere?
fbb0b3b3 58
8c5e482d
JK
59is( "@{[grep -r, qw(foo io noo op zoo)]}", "io op",
60 "-r: found directories readable by effective uid/gid" );
fbb0b3b3
RGS
61
62# Test stackability of filetest operators
42e55ab1 63
8c5e482d
JK
64is(defined( -f -d 'TEST' ), 1, "-f and -d stackable: plain file found");
65isnt(-f -d _, 1, "-f and -d stackable: no plain file found");
66isnt(defined( -e 'zoo' ), 1, "-e: file does not exist");
67isnt(defined( -e -d 'zoo' ), 1, "-e and -d: neither file nor directory exists");
68isnt(defined( -f -e 'zoo' ), 1, "-f and -e: not a plain file and does not exist");
69is(-f -e 'TEST', 1, "-f and -e: plain file and exists");
70is(-e -f 'TEST', 1, "-e and -f: exists and is plain file");
71is(defined(-d -e 'TEST'), 1, "-d and -e: file at least exists");
72is(defined(-e -d 'TEST'), 1, "-e and -d: file at least exists");
73isnt( -f -d 'op', 1, "-f and -d: directory found but is not a plain file");
74is(-x -d -x 'op', 1, "-x, -d and -x again: directory exists and is executable");
fea55e48
NC
75my ($size) = (stat 'TEST')[7];
76cmp_ok($size, '>', 1, 'TEST is longer than 1 byte');
77is( (-s -f 'TEST'), $size, "-s returns real size" );
8c5e482d 78is(-f -s 'TEST', 1, "-f and -s: plain file with non-zero size");
7294df96 79
e7d3eb55 80# now with an empty file
8c5e482d
JK
81is(-f $ro_empty_file, 1, "-f: plain file found");
82is(-s $ro_empty_file, 0, "-s: file has 0 bytes");
83is(-f -s $ro_empty_file, 0, "-f and -s: plain file with 0 bytes");
84is(-s -f $ro_empty_file, 0, "-s and -f: file with 0 bytes is plain file");
e7d3eb55 85
1f26655e
FC
86# stacked -l
87eval { -l -e "TEST" };
88like $@, qr/^The stat preceding -l _ wasn't an lstat at /,
89 'stacked -l non-lstat error with warnings off';
90{
91 local $^W = 1;
92 eval { -l -e "TEST" };
93 like $@, qr/^The stat preceding -l _ wasn't an lstat at /,
94 'stacked -l non-lstat error with warnings on';
95}
96# Make sure -l is using the previous stat buffer, and not using the previ-
97# ous op’s return value as a file name.
8f67f7cf 98# t/TEST can be a symlink under -Dmksymlinks, so use our temporary file.
1f26655e
FC
99SKIP: {
100 use Perl::OSType 'os_type';
cd22fad3 101 if (os_type ne 'Unix') { skip "Not Unix", 3 }
1f26655e 102 chomp(my $ln = `which ln`);
cd22fad3 103 if ( ! -e $ln ) { skip "No ln" , 3 }
8f67f7cf
NC
104 lstat $ro_empty_file;
105 `ln -s $ro_empty_file 1`;
bce3b594 106 isnt(-l -e _, 1, 'stacked -l uses previous stat, not previous retval');
1f26655e 107 unlink 1;
433644ee
FC
108
109 # Since we already have our skip block set up, we might as well put this
110 # test here, too:
111 # -l always treats a non-bareword argument as a file name
8f67f7cf 112 system 'ln', '-s', $ro_empty_file, \*foo;
433644ee 113 local $^W = 1;
cd22fad3
RS
114 my @warnings;
115 local $SIG{__WARN__} = sub { push @warnings, @_ };
bce3b594 116 is(-l \*foo, 1, '-l \*foo is a file name');
cd22fad3 117 ok($warnings[0] =~ /-l on filehandle foo/, 'warning for -l $handle');
433644ee 118 unlink \*foo;
1f26655e
FC
119}
120
7294df96
RGS
121# test that _ is a bareword after filetest operators
122
123-f 'TEST';
8c5e482d 124is(-f _, 1, "_ is bareword after filetest operator");
7294df96 125sub _ { "this is not a file name" }
8c5e482d 126is(-f _, 1, "_ is bareword after filetest operator");
d89f1457
BM
127
128my $over;
129{
130 package OverFtest;
131
4d57d24f 132 use overload
c1d4704a 133 fallback => 1,
4d57d24f 134 -X => sub {
c1d4704a 135 $over = [qq($_[0]), $_[1]];
4d57d24f
BM
136 "-$_[1]";
137 };
d89f1457 138}
f6aa8023
BM
139{
140 package OverString;
141
142 # No fallback. -X should fall back to string overload even without
143 # it.
144 use overload q/""/ => sub { $over = 1; "TEST" };
145}
146{
147 package OverBoth;
148
149 use overload
150 q/""/ => sub { "TEST" },
151 -X => sub { "-$_[1]" };
152}
153{
154 package OverNeither;
155
4d57d24f 156 # Need fallback. Previous versions of perl required 'fallback' to do
f6aa8023
BM
157 # -X operations on an object with no "" overload.
158 use overload
159 '+' => sub { 1 },
160 fallback => 1;
161}
162
163my $ft = bless [], "OverFtest";
c1d4704a 164my $ftstr = qq($ft);
f6aa8023
BM
165my $str = bless [], "OverString";
166my $both = bless [], "OverBoth";
167my $neither = bless [], "OverNeither";
c1d4704a 168my $nstr = qq($neither);
d89f1457 169
d0c91b6a
BM
170open my $gv, "<", "TEST";
171bless $gv, "OverString";
172open my $io, "<", "TEST";
173$io = *{$io}{IO};
174bless $io, "OverString";
175
822146ea
RGS
176my $fcntl_not_available;
177eval { require Fcntl } or $fcntl_not_available = 1;
fa7f7498 178
d89f1457 179for my $op (split //, "rwxoRWXOezsfdlpSbctugkTMBAC") {
d3ebc3eb 180 $over = [];
bce3b594
NC
181 my $rv = eval "-$op \$ft";
182 isnt( $rv, undef, "overloaded -$op succeeds" )
f6aa8023
BM
183 or diag( $@ );
184 is( $over->[0], $ftstr, "correct object for overloaded -$op" );
d89f1457
BM
185 is( $over->[1], $op, "correct op for overloaded -$op" );
186 is( $rv, "-$op", "correct return value for overloaded -$op");
f6aa8023 187
fa7f7498 188 my ($exp, $is) = (1, "is");
189 if (
822146ea 190 !$fcntl_not_available and (
fa7f7498 191 $op eq "u" and not eval { Fcntl::S_ISUID() } or
192 $op eq "g" and not eval { Fcntl::S_ISGID() } or
193 $op eq "k" and not eval { Fcntl::S_ISVTX() }
822146ea 194 )
fa7f7498 195 ) {
196 ($exp, $is) = (0, "not");
197 }
198
f6aa8023
BM
199 $over = 0;
200 $rv = eval "-$op \$str";
bce3b594 201 is($@, "", "-$op succeeds with string overloading");
f6aa8023 202 is( $rv, eval "-$op 'TEST'", "correct -$op on string overload" );
fa7f7498 203 is( $over, $exp, "string overload $is called for -$op" );
f6aa8023 204
fa7f7498 205 ($exp, $is) = $op eq "l" ? (1, "is") : (0, "not");
d0c91b6a
BM
206
207 $over = 0;
208 eval "-$op \$gv";
209 is( $over, $exp, "string overload $is called for -$op on GLOB" );
210
52f7f5ab
BM
211 # IO refs always get string overload called. This might be a bug.
212 $op eq "t" || $op eq "T" || $op eq "B"
213 and ($exp, $is) = (1, "is");
214
d0c91b6a
BM
215 $over = 0;
216 eval "-$op \$io";
217 is( $over, $exp, "string overload $is called for -$op on IO");
218
f6aa8023
BM
219 $rv = eval "-$op \$both";
220 is( $rv, "-$op", "correct -$op on string/-X overload" );
221
222 $rv = eval "-$op \$neither";
bce3b594 223 is($@, "", "-$op succeeds with random overloading");
f6aa8023 224 is( $rv, eval "-$op \$nstr", "correct -$op with random overloading" );
f6aa8023 225
4d57d24f
BM
226 is( eval "-r -$op \$ft", "-r", "stacked overloaded -$op" );
227 is( eval "-$op -r \$ft", "-$op", "overloaded stacked -$op" );
228}
ca867162
FC
229
230# -l stack corruption: this bug occurred from 5.8 to 5.14
231{
232 push my @foo, "bar", -l baz;
233 is $foo[0], "bar", '-l bareword does not corrupt the stack';
234}
49498caf 235
31b139ba
FC
236# -l and fatal warnings
237stat "test.pl";
238eval { use warnings FATAL => io; -l cradd };
bce3b594
NC
239isnt(stat _, 1,
240 'fatal warnings do not prevent -l HANDLE from setting stat status');
31b139ba 241
49498caf
FC
242# File test ops should not call get-magic on the topmost SV on the stack if
243# it belongs to another op.
244{
245 my $w;
246 sub oon::TIESCALAR{bless[],'oon'}
247 sub oon::FETCH{$w++}
248 tie my $t, 'oon';
249 push my @a, $t, -t;
250 is $w, 1, 'file test does not call FETCH on stack item not its own';
251}
5731662b 252
97c226b8
FC
253# -T and -B
254
bd5f6c01
FC
255my $Perl = which_perl();
256
5731662b 257SKIP: {
2ad48547 258 skip "no -T on filehandles", 8 unless eval { -T STDERR; 1 };
97c226b8
FC
259
260 # Test that -T HANDLE sets the last stat type
5731662b
FC
261 -l "perl.c"; # last stat type is now lstat
262 -T STDERR; # should set it to stat, since -T does a stat
263 eval { -l _ }; # should die, because the last stat type is not lstat
264 like $@, qr/^The stat preceding -l _ wasn't an lstat at /,
265 '-T HANDLE sets the stat type';
97c226b8
FC
266
267 # statgv should be cleared when freed
268 fresh_perl_is
269 'open my $fh, "test.pl"; -r $fh; undef $fh; open my $fh2, '
bd5f6c01 270 . "q\0$Perl\0; print -B _",
97c226b8
FC
271 '',
272 { switches => ['-l'] },
273 'PL_statgv should not point to freed-and-reused SV';
274
275 # or coerced into a non-glob
276 fresh_perl_is
277 'open Fh, "test.pl"; -r($h{i} = *Fh); $h{i} = 3; undef %h;'
278 . 'open my $fh2, ' . "q\0" . which_perl() . "\0; print -B _",
279 '',
280 { switches => ['-l'] },
281 'PL_statgv should not point to coerced-freed-and-reused GV';
bd5f6c01
FC
282
283 # -T _ should work after stat $ioref
284 open my $fh, 'test.pl';
285 stat $Perl; # a binary file
286 stat *$fh{IO};
bce3b594 287 is(-T _, 1, '-T _ works after stat $ioref');
bd5f6c01
FC
288
289 # and after -r $ioref
290 -r *$fh{IO};
bce3b594 291 is(-T _, 1, '-T _ works after -r $ioref');
eb4c377a
FC
292
293 # -T _ on closed filehandle should still reset stat info
294 stat $fh;
295 close $fh;
296 -T _;
bce3b594 297 isnt(stat _, 1, '-T _ on closed filehandle resets stat info');
21a64c3e
FC
298
299 lstat "test.pl";
300 -T $fh; # closed
301 eval { lstat _ };
302 like $@, qr/^The stat preceding lstat\(\) wasn't an lstat at /,
303 '-T on closed handle resets last stat type';
2ad48547
FC
304
305 # Fatal warnings should not affect the setting of errno.
306 $! = 7;
307 -T cradd;
308 my $errno = $!;
309 $! = 7;
310 eval { use warnings FATAL => unopened; -T cradd };
311 my $errno2 = $!;
312 is $errno2, $errno,
313 'fatal warnings do not affect errno after -T BADHADNLE';
5731662b 314}
de61bf2a
FC
315
316is runperl(prog => '-T _', switches => ['-w'], stderr => 1), "",
317 'no uninit warnings from -T with no preceding stat';
7b7309af 318
ad2d99e3 319SKIP: {
bee528ec 320 my $rand_file_name = 'filetest-' . rand =~ y/.//dr;
ad2d99e3
FC
321 if (-e $rand_file_name) { skip "File $rand_file_name exists", 1 }
322 stat 'test.pl';
323 -T $rand_file_name;
bce3b594 324 isnt(stat _, 1, '-T "nonexistent" resets stat success status');
ad2d99e3
FC
325}
326
7b7309af
FC
327# Unsuccessful filetests on filehandles should leave stat buffers in the
328# same state whether fatal warnings are on or off.
329{
330 stat "test.pl";
331 # This GV has no IO
332 -r *phlon;
333 my $failed_stat1 = stat _;
334
335 stat "test.pl";
336 eval { use warnings FATAL => unopened; -r *phlon };
337 my $failed_stat2 = stat _;
338
339 is $failed_stat2, $failed_stat1,
340 'failed -r($gv_without_io) with and w/out fatal warnings';
341
342 stat "test.pl";
343 -r cength; # at compile time autovivifies IO, but with no fp
344 $failed_stat1 = stat _;
345
346 stat "test.pl";
347 eval { use warnings FATAL => unopened; -r cength };
348 $failed_stat2 = stat _;
349
350 is $failed_stat2, $failed_stat1,
351 'failed -r($gv_with_io_but_no_fp) with and w/out fatal warnings';
352}