Capybara（驱动程序 capybara-webkit）偶尔会失败，成功率超过 50%
Capybara (driver capybara-webkit) fails sporadically, succeeds over 50% of the time
我附上了日志，但是，基本上，我整天都在为这个问题而战。它在大多数情况下都会成功，但随后会随机失败且没有可预测的模式。
这些也是非常简单的水豚测试：
t.visit '/signup'
t.fill_in 'user_email', :with => email
t.fill_in 'user_password', :with => password
t.fill_in 'user_password_confirmation', :with => password
t.click_on 'Create Login'
expect(page).to have_content('Welcome!')
我不知道是什么原因造成的。如果有任何见解，我将不胜感激。
$ repeat 12 {rspec}
Randomized with seed 64607
.WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
....
Finished in 1 minute 6 seconds (files took 1.94 seconds to load)
5 examples, 0 failures
Randomized with seed 64607
Randomized with seed 64579
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 10.06 seconds (files took 2.16 seconds to load)
5 examples, 0 failures
Randomized with seed 64579
Randomized with seed 19540
.WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
....
Finished in 1 minute 9.6 seconds (files took 2.17 seconds to load)
5 examples, 0 failures
Randomized with seed 19540
Randomized with seed 14891
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 10.32 seconds (files took 2.27 seconds to load)
5 examples, 0 failures
Randomized with seed 14891
Randomized with seed 18405
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
..F..
Failures:
1) User accounts Creating a new account does proceed with valid information
Failure/Error: expect(page).to have_content('Welcome!')
Capybara::Webkit::NodeNotAttachedError:
Element at 24 no longer present in the DOM
# ./spec/features/create_account_spec.rb:24:in `block (3 levels) in <top (required)>'
Finished in 1 minute 10.47 seconds (files took 2.36 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:21 # User accounts Creating a new account does proceed with valid information
Randomized with seed 18405
Randomized with seed 44934
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
..F..
Failures:
1) User accounts Creating a new account responds with an error if a password is invalid
Failure/Error: t.visit '/signup'
Capybara::Webkit::TimeoutError:
Request timed out after 30 second(s)
Finished in 1 minute 37.2 seconds (files took 2.14 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:34 # User accounts Creating a new account responds with an error if a password is invalid
Randomized with seed 44934
Randomized with seed 2418
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 38.48 seconds (files took 2.22 seconds to load)
5 examples, 0 failures
Randomized with seed 2418
Randomized with seed 62514
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
..F..
Failures:
1) User accounts Creating a new account does proceed with valid information
Failure/Error: expect(page).to have_content('Welcome!')
Capybara::Webkit::NodeNotAttachedError:
Element at 25 no longer present in the DOM
# ./spec/features/create_account_spec.rb:24:in `block (3 levels) in <top (required)>'
Finished in 1 minute 44.84 seconds (files took 2.18 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:21 # User accounts Creating a new account does proceed with valid information
Randomized with seed 62514
Randomized with seed 61981
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
Request to unknown URL: https://api.stripe.com/v1/tokens?...
To block requests to unknown URLs:
Capybara::Webkit.configure do |config|
config.block_unknown_urls
end
To allow just this URL:
Capybara::Webkit.configure do |config|
config.allow_url("https://api.stripe.com/v1/tokens?key=pk_test_ahWNI8gsTepFWYX9nnO0Kgxv&payment_user_agent=stripe.js/699b119&card[name]=Bob+Tomato&card[number]=42&card[cvc]=567&card[address_zip]=37069&card[exp_month]=1&card[exp_year]=2026&callback=sjsonp1452131002689&_method=POST&_accept_language=en-US")
end
To allow requests to URLs from this host:
Capybara::Webkit.configure do |config|
config.allow_url("api.stripe.com")
end
F....
Failures:
1) User accounts Creating a new account does not proceed if any information is missing
Failure/Error: expect(page).to have_content('This Card Number Looks Invalid')
expected to find text "This Card Number Looks Invalid" in ...
# ./spec/features/create_account_spec.rb:18:in `block (3 levels) in <top (required)>'
Finished in 1 minute 50.89 seconds (files took 2.41 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:15 # User accounts Creating a new account does not proceed if any information is missing
Randomized with seed 61981
Randomized with seed 55263
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 27.56 seconds (files took 2.26 seconds to load)
5 examples, 0 failures
Randomized with seed 55263
Randomized with seed 21927
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 23.52 seconds (files took 2.22 seconds to load)
5 examples, 0 failures
Randomized with seed 21927
Randomized with seed 8605
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
....F
Failures:
1) User accounts Creating a new account does not proceed if any information is missing
Failure/Error: t.visit '/signup'
Capybara::Webkit::TimeoutError:
Request timed out after 30 second(s)
Finished in 1 minute 32.47 seconds (files took 2.02 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:15 # User accounts Creating a new account does not proceed if any information is missing
Randomized with seed 8605
像这样的偶发错误通常是由您的规范中的计时问题引起的。当页面加载时间过长时，通常来自页面上不存在的元素。
我发现修复这些类型错误的最简单方法是将您的期望包含在 within block 中。然后，您的测试实际上会等待找到用于 within 块的选择器，然后再继续您的期望。
像这样添加一个内部块
t.visit '/signup'
within "form" do
t.fill_in 'user_email', :with => email
t.fill_in 'user_password', :with => password
t.fill_in 'user_password_confirmation', :with => password
t.click_on 'Create Login'
end
expect(page).to have_content('Welcome!')
我附上了日志，但是，基本上，我整天都在为这个问题而战。它在大多数情况下都会成功，但随后会随机失败且没有可预测的模式。
这些也是非常简单的水豚测试：
t.visit '/signup'
t.fill_in 'user_email', :with => email
t.fill_in 'user_password', :with => password
t.fill_in 'user_password_confirmation', :with => password
t.click_on 'Create Login'
expect(page).to have_content('Welcome!')
我不知道是什么原因造成的。如果有任何见解，我将不胜感激。
$ repeat 12 {rspec}
Randomized with seed 64607
.WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
....
Finished in 1 minute 6 seconds (files took 1.94 seconds to load)
5 examples, 0 failures
Randomized with seed 64607
Randomized with seed 64579
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 10.06 seconds (files took 2.16 seconds to load)
5 examples, 0 failures
Randomized with seed 64579
Randomized with seed 19540
.WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
....
Finished in 1 minute 9.6 seconds (files took 2.17 seconds to load)
5 examples, 0 failures
Randomized with seed 19540
Randomized with seed 14891
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 10.32 seconds (files took 2.27 seconds to load)
5 examples, 0 failures
Randomized with seed 14891
Randomized with seed 18405
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
..F..
Failures:
1) User accounts Creating a new account does proceed with valid information
Failure/Error: expect(page).to have_content('Welcome!')
Capybara::Webkit::NodeNotAttachedError:
Element at 24 no longer present in the DOM
# ./spec/features/create_account_spec.rb:24:in `block (3 levels) in <top (required)>'
Finished in 1 minute 10.47 seconds (files took 2.36 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:21 # User accounts Creating a new account does proceed with valid information
Randomized with seed 18405
Randomized with seed 44934
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
..F..
Failures:
1) User accounts Creating a new account responds with an error if a password is invalid
Failure/Error: t.visit '/signup'
Capybara::Webkit::TimeoutError:
Request timed out after 30 second(s)
Finished in 1 minute 37.2 seconds (files took 2.14 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:34 # User accounts Creating a new account responds with an error if a password is invalid
Randomized with seed 44934
Randomized with seed 2418
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 38.48 seconds (files took 2.22 seconds to load)
5 examples, 0 failures
Randomized with seed 2418
Randomized with seed 62514
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
..F..
Failures:
1) User accounts Creating a new account does proceed with valid information
Failure/Error: expect(page).to have_content('Welcome!')
Capybara::Webkit::NodeNotAttachedError:
Element at 25 no longer present in the DOM
# ./spec/features/create_account_spec.rb:24:in `block (3 levels) in <top (required)>'
Finished in 1 minute 44.84 seconds (files took 2.18 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:21 # User accounts Creating a new account does proceed with valid information
Randomized with seed 62514
Randomized with seed 61981
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
Request to unknown URL: https://api.stripe.com/v1/tokens?...
To block requests to unknown URLs:
Capybara::Webkit.configure do |config|
config.block_unknown_urls
end
To allow just this URL:
Capybara::Webkit.configure do |config|
config.allow_url("https://api.stripe.com/v1/tokens?key=pk_test_ahWNI8gsTepFWYX9nnO0Kgxv&payment_user_agent=stripe.js/699b119&card[name]=Bob+Tomato&card[number]=42&card[cvc]=567&card[address_zip]=37069&card[exp_month]=1&card[exp_year]=2026&callback=sjsonp1452131002689&_method=POST&_accept_language=en-US")
end
To allow requests to URLs from this host:
Capybara::Webkit.configure do |config|
config.allow_url("api.stripe.com")
end
F....
Failures:
1) User accounts Creating a new account does not proceed if any information is missing
Failure/Error: expect(page).to have_content('This Card Number Looks Invalid')
expected to find text "This Card Number Looks Invalid" in ...
# ./spec/features/create_account_spec.rb:18:in `block (3 levels) in <top (required)>'
Finished in 1 minute 50.89 seconds (files took 2.41 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:15 # User accounts Creating a new account does not proceed if any information is missing
Randomized with seed 61981
Randomized with seed 55263
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 27.56 seconds (files took 2.26 seconds to load)
5 examples, 0 failures
Randomized with seed 55263
Randomized with seed 21927
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
.....
Finished in 1 minute 23.52 seconds (files took 2.22 seconds to load)
5 examples, 0 failures
Randomized with seed 21927
Randomized with seed 8605
WARNING: The next major version of capybara-webkit will require at least version 5.0 of Qt. You're using version 4.8.7.
....F
Failures:
1) User accounts Creating a new account does not proceed if any information is missing
Failure/Error: t.visit '/signup'
Capybara::Webkit::TimeoutError:
Request timed out after 30 second(s)
Finished in 1 minute 32.47 seconds (files took 2.02 seconds to load)
5 examples, 1 failure
Failed examples:
rspec ./spec/features/create_account_spec.rb:15 # User accounts Creating a new account does not proceed if any information is missing
Randomized with seed 8605
像这样的偶发错误通常是由您的规范中的计时问题引起的。当页面加载时间过长时，通常来自页面上不存在的元素。
我发现修复这些类型错误的最简单方法是将您的期望包含在 within block 中。然后，您的测试实际上会等待找到用于 within 块的选择器，然后再继续您的期望。
像这样添加一个内部块
t.visit '/signup'
within "form" do
t.fill_in 'user_email', :with => email
t.fill_in 'user_password', :with => password
t.fill_in 'user_password_confirmation', :with => password
t.click_on 'Create Login'
end
expect(page).to have_content('Welcome!')