scm: git: add test of from_path at unit model test_fetch_changesets_from_scratch

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9289 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/repository_git_test.rb

@@ -114,6 +114,7 @@ class RepositoryGitTest < ActiveSupport::TestCase
       assert_equal 3, commit.changes.count
       change = commit.changes.sort_by(&:path).first
       assert_equal "README", change.path
+      assert_equal nil, change.from_path
       assert_equal "A", change.action
 
       assert_equal NUM_HEAD, @repository.extra_info["heads"].size