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module WaitForRequests
extend self
# This is inspired by http://www.salsify.com/blog/engineering/tearing-capybara-ajax-tests
def block_and_wait_for_requests_complete
block_requests { wait_for_all_requests }
end
# Block all requests inside block with 503 response
def block_requests
Gitlab::Testing::RequestBlockerMiddleware.block_requests!
yield
ensure
Gitlab::Testing::RequestBlockerMiddleware.allow_requests!
end
# Slow down requests inside block by injecting `sleep 0.2` before each response
def slow_requests
Gitlab::Testing::RequestBlockerMiddleware.slow_requests!
yield
ensure
Gitlab::Testing::RequestBlockerMiddleware.allow_requests!
end
# Wait for client-side AJAX requests
def wait_for_requests
wait_for('JS requests complete') { finished_all_js_requests? }
end
# Wait for active Rack requests and client-side AJAX requests
def wait_for_all_requests
wait_for('pending requests complete') do
finished_all_rack_reqiests? &&
finished_all_js_requests?
end
end
private
def finished_all_rack_reqiests?
Gitlab::Testing::RequestBlockerMiddleware.num_active_requests.zero?
end
def finished_all_js_requests?
return true unless javascript_test?
finished_all_ajax_requests? &&
finished_all_vue_resource_requests?
end
# Waits until the passed block returns true
def wait_for(condition_name, max_wait_time: Capybara.default_max_wait_time, polling_interval: 0.01)
wait_until = Time.now + max_wait_time.seconds
loop do
break if yield
if Time.now > wait_until
raise "Condition not met: #{condition_name}"
else
sleep(polling_interval)
end
end
end
def finished_all_vue_resource_requests?
Capybara.page.evaluate_script('window.activeVueResources || 0').zero?
end
def finished_all_ajax_requests?
return true if Capybara.page.evaluate_script('typeof jQuery === "undefined"')
Capybara.page.evaluate_script('jQuery.active').zero?
end
def javascript_test?
Capybara.current_driver == Capybara.javascript_driver
end
end