Created
March 5, 2025 13:20
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BrowserScreencast module for RSpec to capture screenscast using Ferrum screencast functionality in configure screenshots_dir.
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# frozen_string_literal: true | |
module BrowserScreencast | |
# Save screencast images from Ferrum | |
def display_image(html:, screenshot_output:) | |
message = super | |
[ | |
"[Screencast]: #{screencast_dir}", | |
message | |
].join("\n") | |
end | |
def ferrum_page | |
page.driver.browser.page | |
end | |
def screencast_dir | |
Rails.root.join(screenshots_dir, 'screencast').relative_path_from(Rails.root).to_s.tap do |dir| | |
FileUtils.mkpath(dir) | |
end | |
end | |
def start_screencast | |
ferrum_page.start_screencast(format: :jpeg, quality: 75) do |data, metadata| | |
timestamp = (metadata['timestamp'] * 1000).to_i | |
File.binwrite(File.join(screencast_dir, "image_#{timestamp}.jpg"), Base64.decode64(data)) | |
end | |
end | |
delegate :stop_screencast, to: :ferrum_page | |
end | |
RSpec.configure do |config| | |
config.include BrowserScreencast, type: :system | |
config.before(:each, type: :system) do | |
start_screencast | |
end | |
config.after(:each, type: :system) do | |
stop_screencast | |
# remove screencast if test passed | |
FileUtils.rm_rf(screencast_dir) if passed? | |
end | |
end |
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