Version sharing (#465) + optional inclusion of subprojects in the roadmap view (#2666).

Each version of a project can be shared with:
* subprojects
* projects in the project hierarchy: ancestors + descendants (needs versions management permission on the root project)
* projects in the project tree: root project + all its descendants (same as above)
* all projects (can be set by admin users only)

Notes:
* when sharing a version of a private project with others projects, its name will be visible within the other projects
* a project with versions used by non descendant projects can not be archived

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3123 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/issue_test.rb

@@ -329,6 +329,46 @@ class IssueTest < ActiveSupport::TestCase
     assert_nil issue.category_id
   end
   
+  def test_move_to_another_project_should_clear_fixed_version_when_not_shared
+    issue = Issue.find(1)
+    issue.update_attribute(:fixed_version_id, 1)
+    assert issue.move_to(Project.find(2))
+    issue.reload
+    assert_equal 2, issue.project_id
+    # Cleared fixed_version
+    assert_equal nil, issue.fixed_version
+  end
+  
+  def test_move_to_another_project_should_keep_fixed_version_when_shared_with_the_target_project
+    issue = Issue.find(1)
+    issue.update_attribute(:fixed_version_id, 4)
+    assert issue.move_to(Project.find(5))
+    issue.reload
+    assert_equal 5, issue.project_id
+    # Keep fixed_version
+    assert_equal 4, issue.fixed_version_id
+  end
+  
+  def test_move_to_another_project_should_clear_fixed_version_when_not_shared_with_the_target_project
+    issue = Issue.find(1)
+    issue.update_attribute(:fixed_version_id, 1)
+    assert issue.move_to(Project.find(5))
+    issue.reload
+    assert_equal 5, issue.project_id
+    # Cleared fixed_version
+    assert_equal nil, issue.fixed_version
+  end
+  
+  def test_move_to_another_project_should_keep_fixed_version_when_shared_systemwide
+    issue = Issue.find(1)
+    issue.update_attribute(:fixed_version_id, 7)
+    assert issue.move_to(Project.find(2))
+    issue.reload
+    assert_equal 2, issue.project_id
+    # Keep fixed_version
+    assert_equal 7, issue.fixed_version_id
+  end
+  
   def test_copy_to_the_same_project
     issue = Issue.find(1)
     copy = nil