using pry-byebug with selenium - deadlock error and unable to step through my code
gartha1 opened this issue · 2 comments
gartha1 commented
When I try using pry-byebug, I find I am unable to step through my code.
It goes into some internal code not written by me, and then gives an error about deadlock.
For anybody unfamiliar with Selenium, it is a library that lets a person programmatically control a web browser. I am using Mac osx. I had to do $gem install selenium-webdriver(which I guess you know). And I had to install a chrome web driver which I did with $brew tap homebrew/cask and $brew cask install chrome driver. Selenium is running fine for me.
The program below demonstrates an issue I'm having with pry-byebug.
Apples-MBP:aa apple$ ls -l
total 24
-rw-r--r-- 1 apple staff 17 29 Dec 03:52 Gemfile
-rw-r--r-- 1 apple staff 287 29 Dec 03:53 Gemfile.lock
-rw-r--r-- 1 apple staff 490 29 Dec 03:53 pbb_selenium_thing.rb
Apples-MBP:aa apple$ cat Gem file
gem 'pry-byebug'
Apples-MBP:aa apple$ bundle install
Using bundler 1.16.2
Using byebug 10.0.2
Using coderay 1.1.2
Using method_source 0.9.2
Using pry 0.11.3
Using pry-byebug 3.6.0
Bundle complete! 1 Gemfile dependency, 6 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
Apples-MBP:aa apple$ cat pbb_selenium_thing.rb
# https://stackoverflow.com/questions/53962313/in-ruby-i-cant-get-byebug-to-work-with-selenium?noredirect=1#comment94763217_53962313
require 'selenium-webdriver'
require 'pry'
require 'pry-byebug'
binding.pry
driver = Selenium::WebDriver.for:chrome
driver.navigate.to "http://google.com"
puts driver.find_element(:tag_name, 'input');
puts driver.find_element(:name, 'q');
driver.find_element(:name, 'q').send_keys("asdf");
#sleep 20
Apples-MBP:aa apple$ ruby pbb_selenium_thing.rb
WARN: Unresolved specs during Gem::Specification.reset:
ffi (>= 1.0.11, ~> 1.0)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
From: /Users/apple/rubyselenium1/aa/pbb_selenium_thing.rb @ line 9 :
4: require 'pry'
5: require 'pry-byebug'
6:
7: binding.pry
8:
=> 9: driver = Selenium::WebDriver.for:chrome
10:
11: driver.navigate.to "http://google.com"
12:
13: puts driver.find_element(:tag_name, 'input');
14: puts driver.find_element(:name, 'q');
[1] pry(main)> step
From: /usr/local/lib/ruby/gems/2.5.0/gems/selenium-webdriver-3.141.0/lib/selenium/webdriver.rb @ line 86 Selenium::WebDriver.for:
85: def self.for(*args)
=> 86: WebDriver::Driver.for(*args)
87: end
[1] pry(Selenium::WebDriver)> step
From: /usr/local/lib/ruby/gems/2.5.0/gems/selenium-webdriver-3.141.0/lib/selenium/webdriver/common/driver.rb @ line 42 Selenium::WebDriver::Driver.for:
41: def for(browser, opts = {})
=> 42: case browser
43: when :chrome
44: Chrome::Driver.new(opts)
45: when :internet_explorer, :ie
46: IE::Driver.new(opts)
47: when :safari
48: Safari::Driver.new(opts)
49: when :phantomjs
50: PhantomJS::Driver.new(opts)
51: when :firefox, :ff
52: Firefox::Driver.new(opts)
53: when :edge
54: Edge::Driver.new(opts)
55: when :remote
56: Remote::Driver.new(opts)
57: else
58: raise ArgumentError, "unknown driver: #{browser.inspect}"
59: end
60: end
[1] pry(Selenium::WebDriver::Driver)> step
From: /usr/local/lib/ruby/gems/2.5.0/gems/selenium-webdriver-3.141.0/lib/selenium/webdriver/common/driver.rb @ line 44 Selenium::WebDriver::Driver.for:
41: def for(browser, opts = {})
42: case browser
43: when :chrome
=> 44: Chrome::Driver.new(opts)
45: when :internet_explorer, :ie
46: IE::Driver.new(opts)
47: when :safari
48: Safari::Driver.new(opts)
49: when :phantomjs
50: PhantomJS::Driver.new(opts)
51: when :firefox, :ff
52: Firefox::Driver.new(opts)
53: when :edge
54: Edge::Driver.new(opts)
55: when :remote
56: Remote::Driver.new(opts)
57: else
58: raise ArgumentError, "unknown driver: #{browser.inspect}"
59: end
60: end
[1] pry(Selenium::WebDriver::Driver)> step
From: /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb @ line 40 Kernel#require:
35: #
36: # The normal <tt>require</tt> functionality of returning false if
37: # that file has already been loaded is preserved.
38:
39: def require path
=> 40: RUBYGEMS_ACTIVATION_MONITOR.enter
41:
42: path = path.to_path if path.respond_to? :to_path
43:
44: if spec = Gem.find_unresolved_default_spec(path)
45: Gem.remove_unresolved_default_spec(spec)
[1] pry(main)> step
From: /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/monitor.rb @ line 184 MonitorMixin#mon_enter:
183: def mon_enter
=> 184: if @mon_owner != Thread.current
185: @mon_mutex.lock
186: @mon_owner = Thread.current
187: @mon_count = 0
188: end
189: @mon_count += 1
190: end
[1] pry(#<Monitor>)> step
From: /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/monitor.rb @ line 185 MonitorMixin#mon_enter:
183: def mon_enter
184: if @mon_owner != Thread.current
=> 185: @mon_mutex.lock
186: @mon_owner = Thread.current
187: @mon_count = 0
188: end
189: @mon_count += 1
190: end
[1] pry(#<Monitor>)> step
before_session hook failed: ThreadError: deadlock; recursive locking
/usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/monitor.rb:185:in `lock'
(see _pry_.hooks.errors to debug)
[1] pry(#<Monitor>)> quit
Traceback (most recent call last):
29: from pbb_selenium_thing.rb:9:in `<main>'
28: from /usr/local/lib/ruby/gems/2.5.0/gems/selenium-webdriver-3.141.0/lib/selenium/webdriver.rb:86:in `for'
27: from /usr/local/lib/ruby/gems/2.5.0/gems/selenium-webdriver-3.141.0/lib/selenium/webdriver/common/driver.rb:44:in `for'
26: from /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:40:in `require'
25: from /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/monitor.rb:186:in `mon_enter'
24: from /usr/local/lib/ruby/gems/2.5.0/gems/byebug-10.0.2/lib/byebug/context.rb:98:in `at_line'
23: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:63:in `at_line'
22: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:111:in `resume_pry'
21: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:27:in `run'
20: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:27:in `catch'
19: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:28:in `block in run'
18: from /usr/local/lib/ruby/gems/2.5.0/gems/byebug-10.0.2/lib/byebug/helpers/eval.rb:94:in `allowing_other_threads'
17: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:28:in `block (2 levels) in run'
16: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-byebug-3.6.0/lib/byebug/processors/pry_processor.rb:113:in `block in resume_pry'
15: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/pry_instance.rb:348:in `repl'
14: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/repl.rb:38:in `start'
13: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/input_lock.rb:79:in `with_ownership'
12: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/input_lock.rb:61:in `__with_ownership'
11: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/repl.rb:38:in `block in start'
10: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/repl.rb:67:in `repl'
9: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/repl.rb:67:in `loop'
8: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/repl.rb:68:in `block in repl'
7: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/repl.rb:108:in `read'
6: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/indent.rb:394:in `correct_indentation'
5: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/terminal.rb:8:in `screen_size'
4: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/terminal.rb:33:in `actual_screen_size'
3: from /usr/local/lib/ruby/gems/2.5.0/gems/pry-0.11.3/lib/pry/terminal.rb:47:in `screen_size_according_to_io_console'
2: from /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:40:in `require'
1: from /usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/monitor.rb:185:in `mon_enter'
/usr/local/Cellar/ruby/2.5.0/lib/ruby/2.5.0/monitor.rb:185:in `lock': deadlock; recursive locking (ThreadError)
Apples-MBP:aa apple$
gartha1 commented
This shows what happens if I use 'next' rather than 'step'.
It doesn't stop at each put statement. (which is what I want to do).
So either way, step or next, it doesn't work or doesn't do what I'd like.
Apples-MBP:aa apple$ ls -l
total 24
-rw-r--r-- 1 apple staff 17 29 Dec 03:52 Gemfile
-rw-r--r-- 1 apple staff 287 29 Dec 03:53 Gemfile.lock
-rw-r--r-- 1 apple staff 490 29 Dec 03:53 pbb_selenium_thing.rb
Apples-MBP:aa apple$ cat Gemfile
gem 'pry-byebug'
Apples-MBP:aa apple$ cat pbb_selenium_thing.rb
# https://stackoverflow.com/questions/53962313/in-ruby-i-cant-get-byebug-to-work-with-selenium?noredirect=1#comment94763217_53962313
require 'selenium-webdriver'
require 'pry'
require 'pry-byebug'
binding.pry
driver = Selenium::WebDriver.for:chrome
driver.navigate.to "http://google.com"
puts driver.find_element(:tag_name, 'input');
puts driver.find_element(:name, 'q');
driver.find_element(:name, 'q').send_keys("asdf");
#sleep 20
Apples-MBP:aa apple$ ruby pbb_selenium_thing.rb
WARN: Unresolved specs during Gem::Specification.reset:
ffi (>= 1.0.11, ~> 1.0)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
From: /Users/apple/rubyselenium1/aa/pbb_selenium_thing.rb @ line 9 :
4: require 'pry'
5: require 'pry-byebug'
6:
7: binding.pry
8:
=> 9: driver = Selenium::WebDriver.for:chrome
10:
11: driver.navigate.to "http://google.com"
12:
13: puts driver.find_element(:tag_name, 'input');
14: puts driver.find_element(:name, 'q');
[1] pry(main)> next
#<Selenium::WebDriver::Element:0x00007fb4a7bff8e8>
#<Selenium::WebDriver::Element:0x00007fb4a7b0c3c8>
Apples-MBP:aa apple$
manik1235 commented
I have a similar issue while using pry-byebug with pry-remote on MacOS. If I try to use finish, step, or next, it gets stuck at a call to teardown in PryRemote::Server#run
[36] pry(#<Admin::VersionsController>)> finish
From: /usr/local/lib/ruby/gems/2.6.0/gems/pry-remote-0.1.8/lib/pry-remote.rb @ line 211 PryRemote::Server#run:
206: def run
207: setup
208:
209: Pry.start(@object, @options.merge(:input => client.input_proxy, :output => client.output))
210: ensure
=> 211: teardown
212: end