104 lines
2.7 KiB
Ruby
104 lines
2.7 KiB
Ruby
require 'spec_helper'
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require 'capybara/webkit/driver'
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require 'mini_magick'
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describe Capybara::Webkit::Driver, "rendering an image" do
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include AppRunner
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let(:driver) do
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driver_for_html(<<-HTML)
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<html>
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<body>
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<h1>Hello World</h1>
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</body>
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</html>
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HTML
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end
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before(:each) do
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# Set up the tmp directory and file name
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tmp_dir = File.join(PROJECT_ROOT, 'tmp')
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FileUtils.mkdir_p tmp_dir
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@file_name = File.join(tmp_dir, 'render-test.png')
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driver.visit("#{AppRunner.app_host}/")
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end
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def render(options)
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FileUtils.rm_f @file_name
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driver.save_screenshot @file_name, options
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@image = MiniMagick::Image.open @file_name
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end
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context "with default options" do
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before { render({}) }
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it "should be a PNG" do
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expect(@image[:format]).to eq "PNG"
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end
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it "width default to 1000px (with 15px less for the scrollbar)" do
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expect(@image[:width]).to be < 1001
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expect(@image[:width]).to be > 1000-17
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end
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it "height should be at least 10px" do
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expect(@image[:height]).to be >= 10
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end
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end
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context "with dimensions set larger than necessary" do
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before { render(:width => 500, :height => 400) }
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it "width should match the width given" do
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expect(@image[:width]).to eq 500
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end
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it "height should match the height given" do
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expect(@image[:height]).to eq 400
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end
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it "should reset window dimensions to their default value" do
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expect(driver.evaluate_script('window.innerWidth')).to eq 1680
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expect(driver.evaluate_script('window.innerHeight')).to eq 1050
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end
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end
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context "with dimensions set smaller than the document's default" do
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before { render(:width => 50, :height => 10) }
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it "width should be greater than the width given" do
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expect(@image[:width]).to be > 50
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end
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it "height should be greater than the height given" do
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expect(@image[:height]).to be > 10
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end
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it "should restore viewport dimensions after rendering" do
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expect(driver.evaluate_script('window.innerWidth')).to eq 1680
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expect(driver.evaluate_script('window.innerHeight')).to eq 1050
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end
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end
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context "with a custom viewport size" do
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before { driver.resize_window(800, 600) }
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it "should restore viewport dimensions after rendering" do
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render({})
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expect(driver.evaluate_script('window.innerWidth')).to eq 800
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expect(driver.evaluate_script('window.innerHeight')).to eq 600
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end
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end
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context "with invalid filepath" do
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before do
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@file_name = File.dirname(@file_name)
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end
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it "raises an InvalidResponseError" do
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expect { render({}) }.to raise_error(Capybara::Webkit::InvalidResponseError)
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end
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end
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end
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