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

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4832 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/scm/adapters/cvs_adapter.rb

@@ -33,6 +33,25 @@ module Redmine
           def sq_bin
             @@sq_bin ||= shell_quote(CVS_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)
+              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
 
         # Guidelines for the input:

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

@@ -13,6 +13,15 @@ begin
         @adapter = Redmine::Scm::Adapters::CvsAdapter.new(MODULE_NAME, REPOSITORY_PATH)
       end
 
+      def test_scm_version
+        to_test = { "\nConcurrent Versions System (CVS) 1.12.13 (client/server)\n"  => [1,12,13],
+                    "\r\n1.12.12\r\n1.12.11"                   => [1,12,12],
+                    "1.12.11\r\n1.12.10\r\n"                   => [1,12,11]}
+        to_test.each do |s, v|
+          test_scm_version_for(s, v)
+        end
+      end
+
       def test_revisions_all
         cnt = 0
         @adapter.revisions('', nil, nil, :with_paths => true) do |revision|
@@ -29,6 +38,13 @@ begin
         end
         assert_equal 2, cnt
       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 "Cvs test repository NOT FOUND. Skipping unit tests !!!"
       def test_fake; assert true end