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#!/usr/bin/env perl

# mt-aws-glacier - Amazon Glacier sync client
# Copyright (C) 2012-2014  Victor Efimov
# http://mt-aws.com (also http://vs-dev.com) vs@vs-dev.com
# License: GPLv3
#
# This file is part of "mt-aws-glacier"
#
#    mt-aws-glacier is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    mt-aws-glacier is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

use strict;
use warnings;
use utf8;

use FindBin;
use lib map { "$FindBin::RealBin/$_" } qw{../lib ../../lib};
use TestUtils 'w_fatal';

use Carp;
use List::Util qw/first/;
use Scalar::Util qw/looks_like_number/;

use Test::Spec;
use Test::More;
use Test::Deep;

use Data::Dumper;

use App::MtAws::Journal;
require App::MtAws::Command::Sync;



plan tests => 475;

describe "command" => sub {
	my $j;

	before each => sub {
		$j = App::MtAws::Journal->new(journal_file => 'x', 'root_dir' => 'x' );
	};

	describe "modified processing" => sub {

		my @all_detect = qw/treehash mtime mtime-and-treehash mtime-or-treehash always-positive size-only/; # TODO: fetch from ConfigDefinition
		my @detect_with_mtime = grep /mtime/, @all_detect;
		my @detect_without_mtime = grep !/mtime/, @all_detect;

		describe "is_mtime_differs" => sub {
			it "should work when mtime same" => sub {
				App::MtAws::Command::Sync->expects("file_mtime")->returns(sub{ is shift, 'file1'; 123;})->once;
				ok !App::MtAws::Command::Sync::is_mtime_differs({detect => 'mtime-and-treehash'},{mtime => 123}, 'file1');
			};
			it "should work when mtime greater than" => sub {
				App::MtAws::Command::Sync->expects("file_mtime")->returns(sub{ is shift, 'file1'; 456;})->once;
				ok App::MtAws::Command::Sync::is_mtime_differs({detect => 'mtime-and-treehash'},{mtime => 123}, 'file1');
			};
			it "should work when mtime less than" => sub {
				App::MtAws::Command::Sync->expects("file_mtime")->returns(sub{ is shift, 'file1'; 42;})->once;
				ok App::MtAws::Command::Sync::is_mtime_differs({detect => 'mtime-and-treehash'},{mtime => 123}, 'file1');
			};
			it "should work when mtime is undefined in journal" => sub {
				App::MtAws::Command::Sync->expects("file_mtime")->never;
				ok !App::MtAws::Command::Sync::is_mtime_differs({detect => 'mtime-and-treehash'},{mtime => undef}, 'file1');
			};
			it "should work when detect contains mtime" => sub {
				for (@detect_with_mtime) {
					App::MtAws::Command::Sync->expects("file_mtime")->returns(sub{ is shift, 'file1'; 42;})->once;
					ok App::MtAws::Command::Sync::is_mtime_differs({detect => $_},{mtime => 123}, 'file1');
				}
			};
			it "should work when detect does not contain mtime" => sub {
				for (@detect_without_mtime) {
					App::MtAws::Command::Sync->expects("file_mtime")->never;
					ok ! defined App::MtAws::Command::Sync::is_mtime_differs({detect => $_},{mtime => 123}, 'file1');
				}
			};
		};

		describe "should_upload" => sub {

			it "should define unique constants" => sub {
				ok App::MtAws::Command::Sync::SHOULD_CREATE() != App::MtAws::Command::Sync::SHOULD_TREEHASH();
				ok App::MtAws::Command::Sync::SHOULD_CREATE() != App::MtAws::Command::Sync::SHOULD_NOACTION();

				ok App::MtAws::Command::Sync::SHOULD_CREATE();
				ok App::MtAws::Command::Sync::SHOULD_TREEHASH();
				ok !App::MtAws::Command::Sync::SHOULD_NOACTION(); # one should be FALSE

				# numeric eq only
				ok looks_like_number App::MtAws::Command::Sync::SHOULD_CREATE();
				ok looks_like_number App::MtAws::Command::Sync::SHOULD_TREEHASH();
				ok looks_like_number App::MtAws::Command::Sync::SHOULD_NOACTION();
			};

			it "should almost always return create if file size differs" => sub {
				for (grep $_ ne 'always-positive', @all_detect) {
					App::MtAws::Command::Sync->expects("is_mtime_differs")->never;
					App::MtAws::Command::Sync->expects("file_size")->returns(42)->once;
					is  App::MtAws::Command::Sync::should_upload({detect => $_},{mtime => 123, size => 43}, 'file1'),
						App::MtAws::Command::Sync::SHOULD_CREATE();
				}
			};

			sub test_should_upload
			{
				my ($detect, $mtime_differs, $size_differs, $expected) = @_;
				my $opts = {detect => $detect};
				my $file = {mtime => 123, size => 42};
				if (defined $mtime_differs) {
					App::MtAws::Command::Sync->expects("is_mtime_differs")->returns(sub {
						cmp_deeply [$opts, $file, 'file1'], [@_];
						return $mtime_differs;
					})->once
				} else {
					App::MtAws::Command::Sync->expects("is_mtime_differs")->never;
				}
				if (defined $size_differs) {
					App::MtAws::Command::Sync->expects("file_size")->returns(sub {
						cmp_deeply ['file1'], [@_];
						return $size_differs ? 43 : 42;
					})->once
				} else {
					App::MtAws::Command::Sync->expects("file_size")->never;
				}
				cmp_deeply App::MtAws::Command::Sync::should_upload($opts, $file, 'file1'), $expected;
			}

			describe "detect=mtime" => sub {
				it "should return 'create' when mtime differs" => sub {
					test_should_upload('mtime', 1, 0, App::MtAws::Command::Sync::SHOULD_CREATE());
				};
				it "should return FALSE when mtime same" => sub {
					test_should_upload('mtime', 0, 0, App::MtAws::Command::Sync::SHOULD_NOACTION());
				};
			};

			describe "detect=treehash" => sub {
				it "should return 'treehash' mtime is irrelevant" => sub {
					test_should_upload('treehash', undef, 0, App::MtAws::Command::Sync::SHOULD_TREEHASH());
				};
			};

			describe "detect=mtime-and-treehash" => sub {
				it "should return 'treehash' when mtime differs" => sub {
					test_should_upload('mtime-and-treehash', 1, 0, App::MtAws::Command::Sync::SHOULD_TREEHASH());
				};
				it "should return FALSE when mtime same" => sub {
					test_should_upload('mtime-and-treehash', 0, 0, App::MtAws::Command::Sync::SHOULD_NOACTION());
				};
			};

			describe "detect=mtime-or-treehash" => sub {