@@ -115,3 +115,18 @@ describe "When setting page layout" do page.size.should == Prawn::Document::PageGeometry::SIZES["A4"].reverse end end + +describe "The mask() feature" do + it "should allow transactional restoration of attributes" do + @pdf = Prawn::Document.new + y, line_width = @pdf.y, @pdf.line_width + @pdf.mask(:y, :line_width) do + @pdf.y = y + 1 + @pdf.line_width = line_width + 1 + @pdf.y.should_not == y + @pdf.line_width.should_not == line_width + end + @pdf.y.should == y + @pdf.line_width.should == line_width + end +end spec/document_spec.rb 39d364d26736a2c0378d522f2928157c76cc009a Gregory Brown gregory.t.brown@gmail.com http://github.com/sandal/prawn/commit/9d0b188ccf14a1c9afe55ef9fe36125376f8bdcf 9d0b188ccf14a1c9afe55ef9fe36125376f8bdcf 2008-06-20T13:56:51-07:00 2008-06-20T13:56:51-07:00 Cover masking behaviour [#30] db9f401bb73049198f0246798e74ccfad137b4d0 Gregory Brown gregory.t.brown@gmail.com