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require 'spec_helper'
require 'capybara/webkit/driver'
require 'mini_magick'
describe Capybara::Webkit::Driver, "rendering an image" do
include AppRunner
let(:driver) do
driver_for_html(<<-HTML)
<html>
<body>
<h1>Hello World</h1>
</body>
</html>
HTML
end
before(:each) 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')
driver.visit '/'
end
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 { 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 { 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 { 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
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