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Add "scroll-behavior: auto;" CSS to Capybara::Server::AnimationDisabler to disable scroll animation

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This commit is contained in:
Nathan Broadbent 2020-09-29 13:54:16 +08:00
parent d68ea2ae4c
commit 7be5795001
3 changed files with 43 additions and 1 deletions
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3
lib/capybara/server/animation_disabler.rb
View file

@ -46,10 +46,11 @@ module Capybara
DISABLE_MARKUP_TEMPLATE = <<~HTML
<script defer>(typeof jQuery !== 'undefined') && (jQuery.fx.off = true);</script>
<style>
%<selector>s, %<selector>s::before, %<selector>s::after {
%<selector>s, %<selector>s::before, %<selector>s::after {
transition: none !important;
animation-duration: 0s !important;
animation-delay: 0s !important;
scroll-behavior: auto !important;
}
</style>
HTML

8
lib/capybara/spec/views/with_animation.erb
View file

@ -18,6 +18,14 @@
});
</script>
<style>
html {
scroll-behavior: smooth;
}
body {
min-height: 2000px;
}
.transition.away {
width: 0%;
}

33
spec/shared_selenium_session.rb
View file

@ -388,6 +388,39 @@ RSpec.shared_examples 'Capybara::Session' do |session, mode|
@animation_session.find_link('animate me away').right_click
expect(@animation_session).to have_content('Animation Ended', wait: 0.1)
end
it 'should scroll the page instantly', requires: [:js] do
@animation_session.visit('with_animation')
scroll_y = @animation_session.evaluate_script(<<~JS)
(function(){
window.scrollTo(0,500);
return window.scrollY;
})()
JS
expect(scroll_y).to eq 500
end
end
context 'when set to `false`' do
before(:context) do # rubocop:disable RSpec/BeforeAfterAll
skip "Safari doesn't support multiple sessions" if safari?(session)
# NOTE: Although Capybara.SpecHelper.reset! sets Capybara.disable_animation to false,
# it doesn't affect any of these tests because the settings are applied per-session
Capybara.disable_animation = false
@animation_session = Capybara::Session.new(session.mode, TestApp.new)
end
it 'should scroll the page with a smooth animation', requires: [:js] do
@animation_session.visit('with_animation')
scroll_y = @animation_session.evaluate_script(<<~JS)
(function(){
window.scrollTo(0,500);
return window.scrollY;
})()
JS
# measured over 0.5 seconds: 0, 75, 282, 478, 500
expect(scroll_y).to be < 500
end
end
context 'if we pass in css that matches elements' do