2 files changed, 47 insertions, 1 deletions
diff --git a/lib/puppet/type/file/group.rb b/lib/puppet/type/file/group.rb
index 75beb537a..56883add6 100755
--- a/lib/puppet/type/file/group.rb
+++ b/lib/puppet/type/file/group.rb
@@ -46,6 +46,21 @@ module Puppet
             end
         end
 
+        def insync?(current)
+            @should.each do |value|
+                if value =~ /^\d+$/
+                    gid = Integer(value)
+                elsif value.is_a?(String)
+                    fail "Could not find group %s" % value unless gid = gid(value)
+                else
+                    gid = value
+                end
+
+                return true if gid == current
+            end
+            return false
+        end
+
         def retrieve
             return :absent unless stat = resource.stat(false)
 
diff --git a/spec/unit/type/file/group.rb b/spec/unit/type/file/group.rb
index 2b47c75dd..856b05b0d 100755
--- a/spec/unit/type/file/group.rb
+++ b/spec/unit/type/file/group.rb
@@ -6,7 +6,7 @@ property = Puppet::Type.type(:file).attrclass(:group)
 
 describe property do
     before do
-        @resource = mock 'resource'
+        @resource = stub 'resource', :line => "foo", :file => "bar"
         @resource.stubs(:[]).returns "foo"
         @resource.stubs(:[]).with(:path).returns "/my/file"
         @group = property.new :resource => @resource
@@ -53,6 +53,37 @@ describe property do
         end
     end
 
+    describe "when determining if the file is in sync" do
+        it "should directly compare the group values if the desired group is an integer" do
+            @group.should = [10]
+            @group.must be_insync(10)
+        end
+
+        it "should treat numeric strings as integers" do
+            @group.should = ["10"]
+            @group.must be_insync(10)
+        end
+
+        it "should convert the group name to an integer if the desired group is a string" do
+            @group.expects(:gid).with("foo").returns 10
+            @group.should = %w{foo}
+
+            @group.must be_insync(10)
+        end
+
+        it "should fail if it cannot convert a group name to an integer" do
+            @group.expects(:gid).with("foo").returns nil
+            @group.should = %w{foo}
+
+            lambda { @group.insync?(10) }.should raise_error(Puppet::Error)
+        end
+
+        it "should return false if the groups are not equal" do
+            @group.should = [10]
+            @group.should_not be_insync(20)
+        end
+    end
+
     describe "when changing the group" do
         before do
             @group.should = %w{one}