#!/usr/bin/perl
################################################################################
#
# File: 04_intersection.t
# Date: 2012-07-27
# Author: H. Klausing (h.klausing (at) gmx.de)
#
# Description:
# Tests for Array::CompareAndFilter function intersection.
#
################################################################################
#
# Updates:
# 2012-09-01 H. Klausing
# Tests added with multiple equal elements
# Version number removed.
# 2012-08-12 v 1.0.2 H. Klausing
# version number incremented
# 2012-08-05 v 1.0.1 H. Klausing
# version number incremented
# 2012-07-27 v 1.0.0 H. Klausing
# Initial script version
#
################################################################################
#
#-------------------------------------------------------------------------------
# TODO -
#-------------------------------------------------------------------------------
#
#
#
#--- process requirements ---------------
use warnings;
use strict;
#
#
#
#--- global variables -------------------
#
#
#
#--- used modules -----------------------
use Test::More(tests => 19); # <-- put test numbers here
use Test::Differences qw(eq_or_diff);
use Test::Exception;
use lib '../lib';
use Array::CompareAndFilter qw(intersection);
#
#
#
#--- function forward declarations ------
sub main;
#
#
#
#--- start script -----------------------
main();
exit 0; # script execution was successful
#
#
#
################################################################################
# script functions
################################################################################
#
#
#
#-------------------------------------------------------------------------------
# Main entry function for this script.
#-------------------------------------------------------------------------------
sub main {
my @list;
#*** intersection **********************************************************
# Test - Compare error detection, parameter 1
dies_ok {intersection('1', [1, 2, 3, 4, 5, 6, 7, 8])}
"intersection: Compare error detection, parameter 1, ('1',[1,2,3,4,5,6,7,8])";
# Test - Compare error detection, parameter 2
dies_ok {intersection([1, 2, 3, 4, 5, 6, 7, 8], '2')}
"intersection: Compare error detection, parameter 2, ([1,2,3,4,5,6,7,8],'2')";
# Test - Compare error detection, without parameter 2
dies_ok {intersection([1, 2, 3, 4, 5, 6, 7, 8])}
"intersection: Compare error detection, without parameter 2, ([1,2,3,4,5,6,7,8])";
# Test - Compare error detection, without parameters
dies_ok {intersection()} "intersection: Compare error detection, without parameters, ()";
# Test - get empty arrays [],[]
@list = intersection([], []);
eq_or_diff(\@list, [], 'intersection: get empty arrays ([],[](');
# Test - get equal items of equal arrays (1,2)/(1,2)
@list = intersection([1, 2, 3, 4, 5, 6, 7, 8], [1, 2, 3, 4, 5, 6, 7, 8]);
eq_or_diff(
\@list,
[1, 2, 3, 4, 5, 6, 7, 8],
'intersection: get equal items of equal arrays, ([1,2,3,4,5,6,7,8],[1,2,3,4,5,6,7,8])'
);
# Test - get equal items of arrays with same content, ([1,2,3,4,5,6,7,8], [2,1,3,4,5,6,7,8])
@list = intersection([1, 2, 3, 4, 5, 6, 7, 8], [2, 1, 3, 4, 5, 6, 7, 8]);
eq_or_diff(
\@list,
[1, 2, 3, 4, 5, 6, 7, 8],
'intersection: get equal items of arrays with same content, ([1,2,3,4,5,6,7,8],[2,1,3,4,5,6,7,8])'
);
# Test - get equal items of different arrays, ([1,2,3,4,5,6,7,8], [0,1,3,4,5,6,7,8])
@list = intersection([1, 2, 3, 4, 5, 6, 7, 8], [0, 1, 3, 4, 5, 6, 7, 8]);
eq_or_diff(
\@list,
[1, 3, 4, 5, 6, 7, 8],
'intersection: get equal items of different arrays, ([1,2,3,4,5,6,7,8], [0,1,3,4,5,6,7,8])'
);
# Test - get equal items of different arrays with different size, ([1,2,3,4,5,6,7,8], [0,1,3,4,5,6,7,8,9])
@list = intersection([1, 2, 3, 4, 5, 6, 7, 8], [0, 1, 3, 4, 5, 6, 7, 8, 9]);
eq_or_diff(
\@list,
[1, 3, 4, 5, 6, 7, 8],
'intersection: get equal items of different arrays with different size, ([1,2,3,4,5,6,7,8], [0,1,3,4,5,6,7,8,9])'
);
# Test - get equal items of equal arrays with different size, ([1,1,1], [1,1,1,1,1])
@list = intersection([1,1,1], [1,1,1,1,1]);
eq_or_diff(\@list, [1,1,1], 'intersection: get equal items of different arrays with different size, ([1,1,1], [1,1,1,1,1])');
# Test - get equal items of different arrays with different size, ([undef,undef,undef,undef,undef], [undef,undef,undef])
@list = intersection([undef,undef,undef,undef,undef], [undef,undef,undef]);
eq_or_diff(\@list, [undef,undef,undef], 'intersection: get equal items of different arrays with different size, ([undef,undef,undef,undef,undef], [undef,undef,undef])');
# Test - zero equal item handling empty and equal arrays, ([1,1,1], [])
@list = intersection([1,1,1], []);
eq_or_diff(\@list, [], 'intersection: zero equal item handling empty and equal arrays, ([1,1,1], [])');
# Test - get equal items of different arrays with different size, ([1,2,3], [1,2,3,4,4])
@list = intersection([1,2,3], [1,2,3,4,4]);
eq_or_diff(\@list, [1, 2, 3], 'intersection: get equal items of different arrays with different size, ([1,2,3], [1,2,3,4,4])');
# Test - get equal items of different arrays with different size, ([1,2,3,4,4], [1,2,3])
@list = intersection([1,2,3,4,4], [1,2,3]);
eq_or_diff(\@list, [1, 2, 3], 'intersection: get equal items of different arrays with different size, ([1,2,3,4,4], [1,2,3])');
# Test - check behaviour of empty arrays, ([], [])
@list = intersection([], []);
eq_or_diff(\@list, [], 'intersection: check behaviour of empty arrays, ([], [])');
# Test - check behaviour of arrays with undef, ([undef], [undef])
@list = intersection([undef], [undef]);
eq_or_diff(\@list, [undef], 'intersection: check behaviour of arrays with undef, ([undef], [undef])');
# Test - check behaviour of arrays with undef, ([undef,1], [2,undef])
@list = intersection([undef, 1], [2, undef]);
eq_or_diff(\@list, [undef], 'intersection: check behaviour of arrays with undef, ([undef,1], [2,undef])');
# examples
# intersection([1,2,5,4], [2,1,4,3]) ==> (1,2,4)
@list = intersection([1, 2, 5, 4], [2, 1, 4, 3]);
eq_or_diff(\@list, [1, 2, 4], 'example: intersection([1,2,5,4], [2,1,4,3]) ==> (1,2,4)');
# intersection([1,2,4,3,4], [2,1,3]) ==> (1,2,3)
@list = intersection([1,2,4,3,4], [2,1,3]);
eq_or_diff(\@list, [1, 2, 3], 'example: intersection([1,2,4,3,4], [2,1,3]) ==> (1,2,3)');
#
#
#
return;
} ## end sub main
__END__