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# Redmine - project management software

# Copyright (C) 2006-2011  Jean-Philippe Lang

#

# 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.

require File.expand_path('../../test_helper', __FILE__)

class IssueRelationTest < ActiveSupport::TestCase

  fixtures :issue_relations, :issues

  def test_create

    from = Issue.find(1)

    to = Issue.find(2)

    relation = IssueRelation.new :issue_from => from, :issue_to => to,

                                 :relation_type => IssueRelation::TYPE_PRECEDES

    assert relation.save

    relation.reload

    assert_equal IssueRelation::TYPE_PRECEDES, relation.relation_type

    assert_equal from, relation.issue_from

    assert_equal to, relation.issue_to

  end

  def test_create_minimum

    relation = IssueRelation.new :issue_from => Issue.find(1), :issue_to => Issue.find(2)

    assert relation.save

    assert_equal IssueRelation::TYPE_RELATES, relation.relation_type

  end

  def test_follows_relation_should_be_reversed

    from = Issue.find(1)

    to = Issue.find(2)

    relation = IssueRelation.new :issue_from => from, :issue_to => to,

                                 :relation_type => IssueRelation::TYPE_FOLLOWS

    assert relation.save

    relation.reload

    assert_equal IssueRelation::TYPE_PRECEDES, relation.relation_type

    assert_equal to, relation.issue_from

    assert_equal from, relation.issue_to

  end

  def test_follows_relation_should_not_be_reversed_if_validation_fails

    from = Issue.find(1)

    to = Issue.find(2)

    relation = IssueRelation.new :issue_from => from, :issue_to => to,

                                 :relation_type => IssueRelation::TYPE_FOLLOWS,

                                 :delay => 'xx'

    assert !relation.save

    assert_equal IssueRelation::TYPE_FOLLOWS, relation.relation_type

    assert_equal from, relation.issue_from

    assert_equal to, relation.issue_to

  end

  def test_relation_type_for

    from = Issue.find(1)

    to = Issue.find(2)

    relation = IssueRelation.new :issue_from => from, :issue_to => to,

                                 :relation_type => IssueRelation::TYPE_PRECEDES

    assert_equal IssueRelation::TYPE_PRECEDES, relation.relation_type_for(from)

    assert_equal IssueRelation::TYPE_FOLLOWS, relation.relation_type_for(to)

  end

  def test_set_issue_to_dates_without_issue_to

    r = IssueRelation.new(:issue_from => Issue.new(:start_date => Date.today),

                          :relation_type => IssueRelation::TYPE_PRECEDES,

                          :delay => 1)

    assert_nil r.set_issue_to_dates

  end

  def test_set_issue_to_dates_without_issues

    r = IssueRelation.new(:relation_type => IssueRelation::TYPE_PRECEDES, :delay => 1)

    assert_nil r.set_issue_to_dates

  end

  def test_validates_circular_dependency

    IssueRelation.delete_all

    assert IssueRelation.create!(:issue_from => Issue.find(1), :issue_to => Issue.find(2), :relation_type => IssueRelation::TYPE_PRECEDES)

    assert IssueRelation.create!(:issue_from => Issue.find(2), :issue_to => Issue.find(3), :relation_type => IssueRelation::TYPE_PRECEDES)

    r = IssueRelation.new(:issue_from => Issue.find(3), :issue_to => Issue.find(1), :relation_type => IssueRelation::TYPE_PRECEDES)

    assert !r.save

    assert_not_nil r.errors[:base]

  end

  def test_validates_circular_dependency_on_reverse_relations

    IssueRelation.delete_all

    assert IssueRelation.create!(:issue_from => Issue.find(1), :issue_to => Issue.find(3), :relation_type => IssueRelation::TYPE_BLOCKS)

    assert IssueRelation.create!(:issue_from => Issue.find(1), :issue_to => Issue.find(2), :relation_type => IssueRelation::TYPE_BLOCKED)

    r = IssueRelation.new(:issue_from => Issue.find(2), :issue_to => Issue.find(1), :relation_type => IssueRelation::TYPE_BLOCKED)

    assert !r.save

    assert_not_nil r.errors[:base]

  end

end