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package TestTools;
# Library utility for testing
#
use strict;
use warnings;
#
# Find a particular unique installed device.
#
# which - the number of the unique installed device.
# 0 = first, 1 = second, etc.
# busses - list of busses to check
#
# Ignore any device with the same vendor/product id pair.
# Look only at the unique devices, or the first of non-unique devices.
#
sub find_an_installed_device
{
my $which = shift;
my @uniqs = ();
foreach my $bus (@_)
{
next unless @{$bus->devices()};
foreach my $dev ($bus->devices())
{
my $vendor = $dev->idVendor();
my $product = $dev->idProduct();
next if grep { $_->[0] == $vendor and $_->[1] == $product }
@uniqs;
return $dev unless $which--;
push @uniqs, [ $vendor, $product ];
}
}
return;
}
#
# Find a particular unique installed device with its bus.
#
# which - the number of the unique installed device.
# 0 = first, 1 = second, etc.
# busses - list of busses to check
#
# Ignore any device with the same vendor/product id pair.
# Look only at the unique devices, or the first of non-unique devices.
#
sub find_an_installed_device_and_bus
{
my $which = shift;
my @uniqs = ();
foreach my $bus (@_)
{
next unless @{$bus->devices()};
foreach my $dev ($bus->devices())
{
my $vendor = $dev->idVendor();
my $product = $dev->idProduct();
next if grep { $_->[0] == $vendor and $_->[1] == $product }
@uniqs;
return ($bus, $dev) unless $which--;
push @uniqs, [ $vendor, $product ];
}
}
return;
}
1;
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