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|
use strict;
use warnings;
use Test::More;
use File::Spec;
eval { require Storable; };
unless($INC{'Storable.pm'}) {
plan skip_all => 'no Storable.pm';
}
unless(UNIVERSAL::can(Storable => 'lock_nstore')) {
plan skip_all => 'Storable.pm is too old - no file locking support';
}
# Initialise filenames and check they're there
my $SrcFile = File::Spec->catfile('t', 'desertnet.src');
my $XMLFile = File::Spec->catfile('t', 'desertnet.xml');
my $CacheFile = File::Spec->catfile('t', 'desertnet.stor');
unless(-e $SrcFile) {
plan skip_all => 'test data missing';
}
# Make sure we can write to the filesystem and check it uses the same
# clock as the machine we're running on.
my $t0 = time();
unless(open(XML, ">$XMLFile")) {
plan skip_all => "can't create test file: $!";
}
close(XML);
my $t1 = (stat($XMLFile))[9];
my $t2 = time();
if($t1 < $t0 or $t2 < $t1) {
plan skip_all => 'time moved backwards!'
}
plan tests => 23;
##############################################################################
# S U P P O R T R O U T I N E S
##############################################################################
##############################################################################
# Copy a file
#
sub CopyFile {
my($Src, $Dst) = @_;
open(IN, $Src) || return(undef);
local($/) = undef;
my $Data = <IN>;
close(IN);
open(OUT, ">$Dst") || return(undef);
print OUT $Data;
close(OUT);
return(1);
}
##############################################################################
# Delete a file - portably
#
sub DeleteFile {
my($Filename) = @_;
if ('VMS' eq $^O) {
1 while (unlink($Filename));
} else {
unlink($Filename);
}
}
##############################################################################
# Create a file, making sure that its timestamp is newer than another
# existing file.
#
sub MakeNewerFile {
my($File1, $File2, $CodeRef) = @_;
my $t0 = (stat($File1))[9];
while(1) {
unlink($File2);
$CodeRef->();
return if (stat($File2))[9] > $t0;
sleep(1);
}
}
##############################################################################
# Wait until the current time is greater than the supplied value
#
sub PassTime {
my($Target) = @_;
while(time <= $Target) {
sleep 1;
}
}
##############################################################################
# T E S T R O U T I N E S
##############################################################################
use XML::Simple;
# Initialise test data
my $Expected = {
'server' => {
'sahara' => {
'osversion' => '2.6',
'osname' => 'solaris',
'address' => [
'10.0.0.101',
'10.0.1.101'
]
},
'gobi' => {
'osversion' => '6.5',
'osname' => 'irix',
'address' => '10.0.0.102'
},
'kalahari' => {
'osversion' => '2.0.34',
'osname' => 'linux',
'address' => [
'10.0.0.103',
'10.0.1.103'
]
}
}
};
ok(CopyFile($SrcFile, $XMLFile), 'copied known good source file');
unlink($CacheFile);
ok(! -e $CacheFile, 'no cache files lying around');
my $opt = XMLin($XMLFile);
is_deeply($opt, $Expected, 'parsed expected data from file');
ok(! -e $CacheFile, 'and no cache file was created');
PassTime(time()); # Ensure cache file will be newer
$opt = XMLin($XMLFile, cache => 'storable');
is_deeply($opt, $Expected, 'parsed expected data from file (again)');
ok(-e $CacheFile, 'but this time a cache file was created');
$t0 = (stat($CacheFile))[9]; # Remember cache timestamp
PassTime($t0);
$opt = XMLin($XMLFile, cache => ['storable']);
is_deeply($opt, $Expected, 'got expected data from cache');
$t1 = (stat($CacheFile))[9];
is($t0, $t1, 'and cache timestamp has not changed');
PassTime(time());
$t0 = time();
open(FILE, ">>$XMLFile"); # Touch the XML file
print FILE "\n";
close(FILE);
$opt = XMLin($XMLFile, cache => 'storable');
is_deeply($opt, $Expected, 'parsed in expected value again');
$t2 = (stat($CacheFile))[9];
isnt($t1, $t2, 'and this time the cache timestamp has changed');
DeleteFile($XMLFile);
ok(! -e $XMLFile, 'deleted the source file');
open(FILE, ">$XMLFile"); # Re-create it (empty)
close(FILE);
ok(-e $XMLFile, 'recreated the source file');
is(-s $XMLFile, 0, 'but with nothing in it');
MakeNewerFile($XMLFile, $CacheFile, sub { # Make sure cache file is newer
Storable::nstore($Expected, $CacheFile);
});
$opt = XMLin($XMLFile, cache => 'storable');
is_deeply($opt, $Expected, 'got the expected data from the cache');
$t2 = (stat($CacheFile))[9];
PassTime($t2);
open(FILE, ">$XMLFile") || # Write some new data to the XML file
die "open(>$XMLFile): $!\n";
print FILE qq(<opt one="1" two="2"></opt>\n);
close(FILE);
$opt = XMLin($XMLFile); # Parse with no caching
is_deeply($opt, { one => 1, two => 2}, 'parsed in expected data from file');
$t0 = (stat($CacheFile))[9]; # And timestamp on cache file
my $s0 = (-s $CacheFile);
is($t0, $t2, 'and the cache file was not touched');
# Parse again with caching enabled
$opt = XMLin($XMLFile, cache => 'storable');
is_deeply($opt, { one => 1, two => 2}, 'parsed expected data through cache');
$t1 = (stat($CacheFile))[9];
my $s1 = (-s $CacheFile);
ok(($t0 != $t1) || ($s0 != $s1),
'and the cache was updated'); # Content changes but date may not on Win32
ok(CopyFile($SrcFile, $XMLFile), 'copied back the original file');
PassTime($t1);
$opt = XMLin($XMLFile, cache => 'storable');
is_deeply($opt, $Expected, 'parsed expected data in through cache');
# Make sure scheme name is case-insensitive
$opt = XMLin($XMLFile, cache => 'Storable');
is_deeply($opt, $Expected, 'scheme name is case-insensitive');
# Make sure bad scheme names are trapped
$@='';
$_ = eval { XMLin($XMLFile, cache => 'Storubble'); };
is($_, undef, 'bad cache scheme names are trapped');
like($@, qr/Unsupported caching scheme: storubble/,
'with correct error message');
# Clean up and go
unlink($CacheFile);
unlink($XMLFile);
exit(0);
|
