#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2013 the OpenProject Foundation (OPF)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program 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 2
# of the License, or (at your option) any later version.
#
# This program 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See doc/COPYRIGHT.rdoc for more details.
#++
require File.expand_path('../../test_helper', __FILE__)

class RelationTest < ActiveSupport::TestCase
  include MiniTest::Assertions # refute

  fixtures :all

  def test_create
    from = WorkPackage.find(1)
    to = WorkPackage.find(2)

    relation = Relation.new :from => from, :to => to, :relation_type => Relation::TYPE_PRECEDES
    assert relation.save
    relation.reload
    assert_equal Relation::TYPE_PRECEDES, relation.relation_type
    assert_equal from, relation.from
    assert_equal to, relation.to
  end

  def test_follows_relation_should_be_reversed
    from = WorkPackage.find(1)
    to = WorkPackage.find(2)

    relation = Relation.new :from => from, :to => to, :relation_type => Relation::TYPE_FOLLOWS
    assert relation.save
    relation.reload
    assert_equal Relation::TYPE_PRECEDES, relation.relation_type
    assert_equal to, relation.from
    assert_equal from, relation.to
  end

  def test_follows_relation_should_not_be_reversed_if_validation_fails
    from = WorkPackage.find(1)
    to = WorkPackage.find(2)

    relation = Relation.new :from => from, :to => to, :relation_type => Relation::TYPE_FOLLOWS, :delay => 'xx'
    assert !relation.save
    assert_equal Relation::TYPE_FOLLOWS, relation.relation_type
    assert_equal from, relation.from
    assert_equal to, relation.to
  end

  def test_relation_type_for
    from = WorkPackage.find(1)
    to = WorkPackage.find(2)

    relation = Relation.new :from => from, :to => to, :relation_type => Relation::TYPE_PRECEDES
    assert_equal Relation::TYPE_PRECEDES, relation.relation_type_for(from)
    assert_equal Relation::TYPE_FOLLOWS, relation.relation_type_for(to)
  end

  def test_set_dates_of_target_without_to
    r = Relation.new(:from => WorkPackage.new(:start_date => Date.today), :relation_type => Relation::TYPE_PRECEDES, :delay => 1)
    assert_nil r.set_dates_of_target
  end

  def test_set_dates_of_target_without_issues
    r = Relation.new(:relation_type => Relation::TYPE_PRECEDES, :delay => 1)
    assert_nil r.set_dates_of_target
  end

  def test_validates_circular_dependency
    Relation.delete_all
    assert Relation.create!(:from => WorkPackage.find(1), :to => WorkPackage.find(2), :relation_type => Relation::TYPE_PRECEDES)
    assert Relation.create!(:from => WorkPackage.find(2), :to => WorkPackage.find(3), :relation_type => Relation::TYPE_PRECEDES)
    r = Relation.new(:from => WorkPackage.find(3), :to => WorkPackage.find(1), :relation_type => Relation::TYPE_PRECEDES)
    assert !r.save
    refute_empty r.errors[:base]
  end
end