scm: bazaar: add methods of getting bazaar version and add unit lib test (#4273).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4831 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/scm/adapters/bazaar_adapter.rb

@@ -33,6 +33,25 @@ module Redmine
           def sq_bin
             @@sq_bin ||= shell_quote(BZR_BIN)
           end
+
+          def client_version
+            @@client_version ||= (scm_command_version || [])
+          end
+
+          def client_available
+            !client_version.empty?
+          end
+
+          def scm_command_version
+            scm_version = scm_version_from_command_line
+            if m = scm_version.match(%r{\A(.*?)((\d+\.)+\d+)})
+              m[2].scan(%r{\d+}).collect(&:to_i)
+            end
+          end
+
+          def scm_version_from_command_line
+            shellout("#{sq_bin} --version") { |io| io.read }.to_s
+          end
         end
 
         # Get info about the repository

test/unit/lib/redmine/scm/adapters/bazaar_adapter_test.rb

@@ -5,12 +5,28 @@ begin
   class BazaarAdapterTest < ActiveSupport::TestCase
 
     REPOSITORY_PATH = RAILS_ROOT.gsub(%r{config\/\.\.}, '') + '/tmp/test/bazaar_repository'
+    REPOSITORY_PATH.gsub!(/\/+/, '/')
 
     if File.directory?(REPOSITORY_PATH)  
       def setup
-        @adapter = Redmine::Scm::Adapters::BazaarAdapter.new(MODULE_NAME, REPOSITORY_PATH)
+        @adapter = Redmine::Scm::Adapters::BazaarAdapter.new(REPOSITORY_PATH)
       end
 
+      def test_scm_version
+        to_test = { "Bazaar (bzr) 2.1.2\n"             => [2,1,2],
+                    "2.1.1\n1.7\n1.8"                  => [2,1,1],
+                    "2.0.1\r\n1.8.1\r\n1.9.1"          => [2,0,1]}
+        to_test.each do |s, v|
+          test_scm_version_for(s, v)
+        end
+      end
+
+      private
+
+      def test_scm_version_for(scm_command_version, version)
+        @adapter.class.expects(:scm_version_from_command_line).returns(scm_command_version)
+        assert_equal version, @adapter.class.scm_command_version
+      end
     else
       puts "Bazaar test repository NOT FOUND. Skipping unit tests !!!"
       def test_fake; assert true end