require 'spec_helper' require 'capybara/webkit/driver' require 'mini_magick' describe Capybara::Webkit::Driver, "rendering an image" do before(:all) do # Set up the tmp directory and file name tmp_dir = File.join(PROJECT_ROOT, 'tmp') FileUtils.mkdir_p tmp_dir @file_name = File.join(tmp_dir, 'render-test.png') app = lambda do |env| body = <<-HTML

Hello World

HTML [200, { 'Content-Type' => 'text/html', 'Content-Length' => body.length.to_s }, [body]] end @driver = Capybara::Webkit::Driver.new(app, :browser => $webkit_browser) @driver.visit("/hello/world?success=true") end after(:all) { @driver.reset! } def render(options) FileUtils.rm_f @file_name @driver.render @file_name, options @image = MiniMagick::Image.open @file_name end context "with default options" do before(:all){ render({}) } it "should be a PNG" do @image[:format].should == "PNG" end it "width default to 1000px (with 15px less for the scrollbar)" do @image[:width].should be < 1001 @image[:width].should be > 1000-17 end it "height should be at least 10px" do @image[:height].should >= 10 end end context "with dimensions set larger than necessary" do before(:all){ render(:width => 500, :height => 400) } it "width should match the width given" do @image[:width].should == 500 end it "height should match the height given" do @image[:height].should > 10 end end context "with dimensions set smaller than the document's default" do before(:all){ render(:width => 50, :height => 10) } it "width should be greater than the width given" do @image[:width].should > 50 end it "height should be greater than the height given" do @image[:height].should > 10 end end end