diff options
Diffstat (limited to 'lib/Tie/File/t/04_splice.t')
| -rw-r--r-- | lib/Tie/File/t/04_splice.t | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/lib/Tie/File/t/04_splice.t b/lib/Tie/File/t/04_splice.t new file mode 100644 index 0000000000..e291809d3f --- /dev/null +++ b/lib/Tie/File/t/04_splice.t @@ -0,0 +1,206 @@ +#!/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. + +my $file = "tf$$.txt"; +my $data = "rec0$/rec1$/rec2$/"; + +print "1..101\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++; + +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$/"); + +# (97) Splicing with too large a negative number should be fatal +# This test ignored because it causes 5.6.1 and 5.7.2 to dump core +# NOT MY FAULT +if ($] < 5.006 || $] > 5.007002) { + 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 $N \# skipped (5.6.0 through 5.7.2 dump core here.)\n"; +} +$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(""); + + +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 $N\n"; + } else { + s{$/}{\\n}g for $a, $x; + print "not ok $N\n# expected <$x>, got <$a>\n"; + } + $N++; +} + +END { + undef $o; + untie @a; + 1 while unlink $file; +} + |