diff options
Diffstat (limited to 'dist/Tie-File/t/04_splice.t')
| -rw-r--r-- | dist/Tie-File/t/04_splice.t | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/dist/Tie-File/t/04_splice.t b/dist/Tie-File/t/04_splice.t new file mode 100644 index 0000000000..b3880b758c --- /dev/null +++ b/dist/Tie-File/t/04_splice.t @@ -0,0 +1,264 @@ +#!/usr/bin/perl + +# +# Check SPLICE function's effect on the file +# (07_rv_splice.t checks its return value) +# +# Each call to 'check_contents' actually performs two tests. +# First, it calls the tied object's own 'check_integrity' method, +# which makes sure that the contents of the read cache and offset tables +# accurately reflect the contents of the file. +# Then, it checks the actual contents of the file against the expected +# contents. + + +$| = 1; +my $file = "tf$$.txt"; +$: = Tie::File::_default_recsep(); +my $data = "rec0$:rec1$:rec2$:"; +print "1..118\n"; + +init_file($data); + +my $N = 1; +use Tie::File; +print "ok $N\n"; $N++; # partial credit just for showing up + +my $o = tie @a, 'Tie::File', $file; +print $o ? "ok $N\n" : "not ok $N\n"; +$N++; + +$: = $o->{recsep}; +my $n; + +# (3-22) splicing at the beginning +splice(@a, 0, 0, "rec4"); +check_contents("rec4$:$data"); +splice(@a, 0, 1, "rec5"); # same length +check_contents("rec5$:$data"); +splice(@a, 0, 1, "record5"); # longer +check_contents("record5$:$data"); + +splice(@a, 0, 1, "r5"); # shorter +check_contents("r5$:$data"); +splice(@a, 0, 1); # removal +check_contents("$data"); +splice(@a, 0, 0); # no-op +check_contents("$data"); +splice(@a, 0, 0, 'r7', 'rec8'); # insert more than one +check_contents("r7$:rec8$:$data"); +splice(@a, 0, 2, 'rec7', 'record8', 'rec9'); # insert more than delete +check_contents("rec7$:record8$:rec9$:$data"); + +splice(@a, 0, 3, 'record9', 'rec10'); # delete more than insert +check_contents("record9$:rec10$:$data"); +splice(@a, 0, 2); # delete more than one +check_contents("$data"); + + +# (23-42) splicing in the middle +splice(@a, 1, 0, "rec4"); +check_contents("rec0$:rec4$:rec1$:rec2$:"); +splice(@a, 1, 1, "rec5"); # same length +check_contents("rec0$:rec5$:rec1$:rec2$:"); +splice(@a, 1, 1, "record5"); # longer +check_contents("rec0$:record5$:rec1$:rec2$:"); + +splice(@a, 1, 1, "r5"); # shorter +check_contents("rec0$:r5$:rec1$:rec2$:"); +splice(@a, 1, 1); # removal +check_contents("$data"); +splice(@a, 1, 0); # no-op +check_contents("$data"); +splice(@a, 1, 0, 'r7', 'rec8'); # insert more than one +check_contents("rec0$:r7$:rec8$:rec1$:rec2$:"); +splice(@a, 1, 2, 'rec7', 'record8', 'rec9'); # insert more than delete +check_contents("rec0$:rec7$:record8$:rec9$:rec1$:rec2$:"); + +splice(@a, 1, 3, 'record9', 'rec10'); # delete more than insert +check_contents("rec0$:record9$:rec10$:rec1$:rec2$:"); +splice(@a, 1, 2); # delete more than one +check_contents("$data"); + +# (43-62) splicing at the end +splice(@a, 3, 0, "rec4"); +check_contents("$ {data}rec4$:"); +splice(@a, 3, 1, "rec5"); # same length +check_contents("$ {data}rec5$:"); +splice(@a, 3, 1, "record5"); # longer +check_contents("$ {data}record5$:"); + +splice(@a, 3, 1, "r5"); # shorter +check_contents("$ {data}r5$:"); +splice(@a, 3, 1); # removal +check_contents("$data"); +splice(@a, 3, 0); # no-op +check_contents("$data"); +splice(@a, 3, 0, 'r7', 'rec8'); # insert more than one +check_contents("$ {data}r7$:rec8$:"); +splice(@a, 3, 2, 'rec7', 'record8', 'rec9'); # insert more than delete +check_contents("$ {data}rec7$:record8$:rec9$:"); + +splice(@a, 3, 3, 'record9', 'rec10'); # delete more than insert +check_contents("$ {data}record9$:rec10$:"); +splice(@a, 3, 2); # delete more than one +check_contents("$data"); + +# (63-82) splicing with negative subscript +splice(@a, -1, 0, "rec4"); +check_contents("rec0$:rec1$:rec4$:rec2$:"); +splice(@a, -1, 1, "rec5"); # same length +check_contents("rec0$:rec1$:rec4$:rec5$:"); +splice(@a, -1, 1, "record5"); # longer +check_contents("rec0$:rec1$:rec4$:record5$:"); + +splice(@a, -1, 1, "r5"); # shorter +check_contents("rec0$:rec1$:rec4$:r5$:"); +splice(@a, -1, 1); # removal +check_contents("rec0$:rec1$:rec4$:"); +splice(@a, -1, 0); # no-op +check_contents("rec0$:rec1$:rec4$:"); +splice(@a, -1, 0, 'r7', 'rec8'); # insert more than one +check_contents("rec0$:rec1$:r7$:rec8$:rec4$:"); +splice(@a, -1, 2, 'rec7', 'record8', 'rec9'); # insert more than delete +check_contents("rec0$:rec1$:r7$:rec8$:rec7$:record8$:rec9$:"); + +splice(@a, -3, 3, 'record9', 'rec10'); # delete more than insert +check_contents("rec0$:rec1$:r7$:rec8$:record9$:rec10$:"); +splice(@a, -4, 3); # delete more than one +check_contents("rec0$:rec1$:rec10$:"); + +# (83-84) scrub it all out +splice(@a, 0, 3); +check_contents(""); + +# (85-86) put some back in +splice(@a, 0, 0, "rec0", "rec1"); +check_contents("rec0$:rec1$:"); + +# (87-88) what if we remove too many records? +splice(@a, 0, 17); +check_contents(""); + +# (89-92) In the past, splicing past the end was not correctly detected +# (1.14) +splice(@a, 89, 3); +check_contents(""); +splice(@a, @a, 3); +check_contents(""); + +# (93-96) Also we did not emulate splice's freaky behavior when inserting +# past the end of the array (1.14) +splice(@a, 89, 0, "I", "like", "pie"); +check_contents("I$:like$:pie$:"); +splice(@a, 89, 0, "pie pie pie"); +check_contents("I$:like$:pie$:pie pie pie$:"); + +# (97) Splicing with too large a negative number should be fatal +# This test ignored because it causes 5.6.1 and 5.7.3 to dump core +# It also garbles the stack under 5.005_03 (20020401) +# NOT MY FAULT +if ($] > 5.007003) { + eval { splice(@a, -7, 0) }; + print $@ =~ /^Modification of non-creatable array value attempted, subscript -7/ + ? "ok $N\n" : "not ok $N \# \$\@ was '$@'\n"; +} else { + print "ok $N \# skipped (versions through 5.7.3 dump core here.)\n"; +} +$N++; + +# (98-101) Test default arguments +splice @a, 0, 0, (0..11); +splice @a, 4; +check_contents("0$:1$:2$:3$:"); +splice @a; +check_contents(""); + +# (102-103) I think there's a bug here---it will fail to clear the EOF flag +@a = (0..11); +splice @a, -1, 1000; +check_contents("0$:1$:2$:3$:4$:5$:6$:7$:8$:9$:10$:"); + +# (104-106) make sure that undefs are treated correctly---they should +# be converted to empty records, and should not raise any warnings. +# (Some of these failed in 0.90. The change to _fixrec fixed them.) +# 20020331 +{ + my $good = 1; my $warn; + # If any of these raise warnings, we have a problem. + local $SIG{__WARN__} = sub { $good = 0; $warn = shift(); ctrlfix($warn)}; + local $^W = 1; + @a = (1); + splice @a, 1, 0, undef, undef, undef; + print $good ? "ok $N\n" : "not ok $N # $warn\n"; + $N++; $good = 1; + print defined($a[2]) ? "ok $N\n" : "not ok $N\n"; + $N++; $good = 1; + my @r = splice @a, 2; + print defined($r[0]) ? "ok $N\n" : "not ok $N\n"; + $N++; $good = 1; +} + +# (107-118) splice with negative length was treated wrong +# 20020402 Reported by Juerd Waalboer +@a = (0..8) ; +splice @a, 0, -3; +check_contents("6$:7$:8$:"); +@a = (0..8) ; +splice @a, 1, -3; +check_contents("0$:6$:7$:8$:"); +@a = (0..8) ; +splice @a, 7, -3; +check_contents("0$:1$:2$:3$:4$:5$:6$:7$:8$:"); +@a = (0..2) ; +splice @a, 0, -3; +check_contents("0$:1$:2$:"); +@a = (0..2) ; +splice @a, 1, -3; +check_contents("0$:1$:2$:"); +@a = (0..2) ; +splice @a, 7, -3; +check_contents("0$:1$:2$:"); + +sub init_file { + my $data = shift; + open F, "> $file" or die $!; + binmode F; + print F $data; + close F; +} + +use POSIX 'SEEK_SET'; +sub check_contents { + my $x = shift; + my $integrity = $o->_check_integrity($file, $ENV{INTEGRITY}); + local *FH = $o->{fh}; + seek FH, 0, SEEK_SET; + print $integrity ? "ok $N\n" : "not ok $N\n"; + $N++; + my $a; + { local $/; $a = <FH> } + $a = "" unless defined $a; + if ($a eq $x) { + print "ok $N\n"; + } else { + ctrlfix($a, $x); + print "not ok $N\n# expected <$x>, got <$a>\n"; + } + $N++; +} + + +sub ctrlfix { + for (@_) { + s/\n/\\n/g; + s/\r/\\r/g; + } +} + +END { + undef $o; + untie @a; + 1 while unlink $file; +} + |