Public bug reported:
A watchful reviewer may notice that sometimes
test_dashboard_help_redirection fails. Initially I thought that it was
caught by an increased network timeout from Jenkins worker node to
docs.openstack.org site. So I made a patch
https://github.com/openstack/horizon/commit/6474215840d4cdde3751c335f46f32cb317238c0
Recently I found that this intermittent failure still occurs. This time
I reproduced the network delay by means of script (run as root):
delay.sh
<BEGIN OF FILE>
delay=$1
ip=$2
tc qdisc del dev eth0 root
if [ -n $delay ]; then
tc qdisc add dev eth0 root handle 1: prio
tc filter add dev eth0 parent 1:0 protocol ip pref 55 handle ::55 u32 match
ip dst $ip flowid 2:1
tc qdisc add dev eth0 parent 1:1 handle 2: netem delay ${delay}ms
fi
<END OF FILE>
I realized that first the window is opened, then it waits for the page
to become accessible, and if I set timeout large enough (say, 10
seconds), I get the following traceback:
Error
Traceback (most recent call last):
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 133, in run
self.runTest(result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 151, in runTest
test(result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/unittest2/case.py",
line 673, in __call__
return self.run(*args, **kwds)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 606, in run
return run_test.run(result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 80, in run
return self._run_one(actual_result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 94, in _run_one
return self._run_prepared_result(ExtendedToOriginalDecorator(result))
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 108, in _run_prepared_result
self._run_core()
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 149, in _run_core
self.case._run_teardown, self.result):
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 193, in _run_user
return self._got_user_exception(sys.exc_info())
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 213, in _got_user_exception
self.case.onException(exc_info, tb_label=tb_label)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 558, in onException
handler(exc_info)
File
"/home/timur/develop/horizon/openstack_dashboard/test/integration_tests/helpers.py",
line 132, in _save_screenshot
self.driver.get_screenshot_as_file(filename)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 758, in get_screenshot_as_file
png = self.get_screenshot_as_png()
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 777, in get_screenshot_as_png
return base64.b64decode(self.get_screenshot_as_base64().encode('ascii'))
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 787, in get_screenshot_as_base64
return self.execute(Command.SCREENSHOT)['value']
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 199, in execute
response = self.command_executor.execute(driver_command, params)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 395, in execute
return self._request(command_info[0], url, body=data)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 425, in _request
self._conn.request(method, parsed_url.path, body, headers)
File "/usr/lib/python2.7/httplib.py", line 979, in request
self._send_request(method, url, body, headers)
File "/usr/lib/python2.7/httplib.py", line 1013, in _send_request
self.endheaders(body)
File "/usr/lib/python2.7/httplib.py", line 975, in endheaders
self._send_output(message_body)
File "/usr/lib/python2.7/httplib.py", line 835, in _send_output
self.send(msg)
File "/usr/lib/python2.7/httplib.py", line 797, in send
self.connect()
File "/usr/lib/python2.7/httplib.py", line 778, in connect
self.timeout, self.source_address)
File "/usr/lib/python2.7/socket.py", line 571, in create_connection
raise err
error: [Errno 111] Connection refused
It's different from the traceback that follows intermittent failure on
gate:
2015-11-24 19:48:29.619 | 2015-11-24 19:48:29.606 | Traceback (most recent call
last):
2015-11-24 19:48:29.620 | 2015-11-24 19:48:29.607 | File
"/opt/stack/new/horizon/openstack_dashboard/test/integration_tests/tests/test_dashboard_help_redirection.py",
line 28, in test_dashboard_help_redirection
2015-11-24 19:48:29.621 | 2015-11-24 19:48:29.608 | "help link did not
redirect to the right URL")
2015-11-24 19:48:29.623 | 2015-11-24 19:48:29.609 | File
"/opt/stack/new/horizon/.tox/py27integration/local/lib/python2.7/site-packages/testtools/testcase.py",
line 350, in assertEqual
2015-11-24 19:48:29.624 | 2015-11-24 19:48:29.610 |
self.assertThat(observed, matcher, message)
2015-11-24 19:48:29.625 | 2015-11-24 19:48:29.611 | File
"/opt/stack/new/horizon/.tox/py27integration/local/lib/python2.7/site-packages/testtools/testcase.py",
line 435, in assertThat
2015-11-24 19:48:29.626 | 2015-11-24 19:48:29.613 | raise mismatch_error
2015-11-24 19:48:29.627 | 2015-11-24 19:48:29.614 |
testtools.matchers._impl.MismatchError: 'http://docs.openstack.org/' !=
u'http://localhost/dashboard/project/': help link did not redirect to the right
URL
The second one looks more like the command to switch the window was
issued before window was actually opened. If that's truly the root
cause, fix should be trivial.
** Affects: horizon
Importance: Undecided
Status: New
** Tags: integration-tests
** Description changed:
A watchful reviewer may notice that sometimes
test_dashboard_help_redirection fails. Initially I thought that it was
caught by an increased network timeout from Jenkins worker node to
docs.openstack.org site. So I made a patch
https://github.com/openstack/horizon/commit/6474215840d4cdde3751c335f46f32cb317238c0
Recently I found that this intermittent failure still occurs. This time
I reproduced the network delay by means of script (run as root):
delay.sh
<BEGIN OF FILE>
delay=$1
ip=$2
tc qdisc del dev eth0 root
if [ -n $delay ]; then
- tc qdisc add dev eth0 root handle 1: prio
- tc filter add dev eth0 parent 1:0 protocol ip pref 55 handle ::55 u32
match ip dst $ip flowid 2:1
- tc qdisc add dev eth0 parent 1:1 handle 2: netem delay ${delay}ms
+ tc qdisc add dev eth0 root handle 1: prio
+ tc filter add dev eth0 parent 1:0 protocol ip pref 55 handle ::55 u32
match ip dst $ip flowid 2:1
+ tc qdisc add dev eth0 parent 1:1 handle 2: netem delay ${delay}ms
fi
<END OF FILE>
- I realized that first the window is opened, then it hangs for the page
- to become accessible, and if I set timeout large enough (say, 30
+ I realized that first the window is opened, then it waits for the page
+ to become accessible, and if I set timeout large enough (say, 10
seconds), I get the following traceback:
Error
Traceback (most recent call last):
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 133, in run
- self.runTest(result)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 151, in runTest
- test(result)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/unittest2/case.py",
line 673, in __call__
- return self.run(*args, **kwds)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 606, in run
- return run_test.run(result)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 80, in run
- return self._run_one(actual_result)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 94, in _run_one
- return self._run_prepared_result(ExtendedToOriginalDecorator(result))
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 108, in _run_prepared_result
- self._run_core()
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 149, in _run_core
- self.case._run_teardown, self.result):
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 193, in _run_user
- return self._got_user_exception(sys.exc_info())
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 213, in _got_user_exception
- self.case.onException(exc_info, tb_label=tb_label)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 558, in onException
- handler(exc_info)
- File
"/home/timur/develop/horizon/openstack_dashboard/test/integration_tests/helpers.py",
line 132, in _save_screenshot
- self.driver.get_screenshot_as_file(filename)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 758, in get_screenshot_as_file
- png = self.get_screenshot_as_png()
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 777, in get_screenshot_as_png
- return base64.b64decode(self.get_screenshot_as_base64().encode('ascii'))
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 787, in get_screenshot_as_base64
- return self.execute(Command.SCREENSHOT)['value']
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 199, in execute
- response = self.command_executor.execute(driver_command, params)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 395, in execute
- return self._request(command_info[0], url, body=data)
- File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 425, in _request
- self._conn.request(method, parsed_url.path, body, headers)
- File "/usr/lib/python2.7/httplib.py", line 979, in request
- self._send_request(method, url, body, headers)
- File "/usr/lib/python2.7/httplib.py", line 1013, in _send_request
- self.endheaders(body)
- File "/usr/lib/python2.7/httplib.py", line 975, in endheaders
- self._send_output(message_body)
- File "/usr/lib/python2.7/httplib.py", line 835, in _send_output
- self.send(msg)
- File "/usr/lib/python2.7/httplib.py", line 797, in send
- self.connect()
- File "/usr/lib/python2.7/httplib.py", line 778, in connect
- self.timeout, self.source_address)
- File "/usr/lib/python2.7/socket.py", line 571, in create_connection
- raise err
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 133, in run
+ self.runTest(result)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 151, in runTest
+ test(result)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/unittest2/case.py",
line 673, in __call__
+ return self.run(*args, **kwds)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 606, in run
+ return run_test.run(result)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 80, in run
+ return self._run_one(actual_result)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 94, in _run_one
+ return self._run_prepared_result(ExtendedToOriginalDecorator(result))
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 108, in _run_prepared_result
+ self._run_core()
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 149, in _run_core
+ self.case._run_teardown, self.result):
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 193, in _run_user
+ return self._got_user_exception(sys.exc_info())
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 213, in _got_user_exception
+ self.case.onException(exc_info, tb_label=tb_label)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 558, in onException
+ handler(exc_info)
+ File
"/home/timur/develop/horizon/openstack_dashboard/test/integration_tests/helpers.py",
line 132, in _save_screenshot
+ self.driver.get_screenshot_as_file(filename)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 758, in get_screenshot_as_file
+ png = self.get_screenshot_as_png()
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 777, in get_screenshot_as_png
+ return base64.b64decode(self.get_screenshot_as_base64().encode('ascii'))
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 787, in get_screenshot_as_base64
+ return self.execute(Command.SCREENSHOT)['value']
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 199, in execute
+ response = self.command_executor.execute(driver_command, params)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 395, in execute
+ return self._request(command_info[0], url, body=data)
+ File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 425, in _request
+ self._conn.request(method, parsed_url.path, body, headers)
+ File "/usr/lib/python2.7/httplib.py", line 979, in request
+ self._send_request(method, url, body, headers)
+ File "/usr/lib/python2.7/httplib.py", line 1013, in _send_request
+ self.endheaders(body)
+ File "/usr/lib/python2.7/httplib.py", line 975, in endheaders
+ self._send_output(message_body)
+ File "/usr/lib/python2.7/httplib.py", line 835, in _send_output
+ self.send(msg)
+ File "/usr/lib/python2.7/httplib.py", line 797, in send
+ self.connect()
+ File "/usr/lib/python2.7/httplib.py", line 778, in connect
+ self.timeout, self.source_address)
+ File "/usr/lib/python2.7/socket.py", line 571, in create_connection
+ raise err
error: [Errno 111] Connection refused
It's different from the traceback that follows intermittent failure on
gate:
2015-11-24 19:48:29.619 | 2015-11-24 19:48:29.606 | Traceback (most recent
call last):
2015-11-24 19:48:29.620 | 2015-11-24 19:48:29.607 | File
"/opt/stack/new/horizon/openstack_dashboard/test/integration_tests/tests/test_dashboard_help_redirection.py",
line 28, in test_dashboard_help_redirection
2015-11-24 19:48:29.621 | 2015-11-24 19:48:29.608 | "help link did not
redirect to the right URL")
2015-11-24 19:48:29.623 | 2015-11-24 19:48:29.609 | File
"/opt/stack/new/horizon/.tox/py27integration/local/lib/python2.7/site-packages/testtools/testcase.py",
line 350, in assertEqual
2015-11-24 19:48:29.624 | 2015-11-24 19:48:29.610 |
self.assertThat(observed, matcher, message)
2015-11-24 19:48:29.625 | 2015-11-24 19:48:29.611 | File
"/opt/stack/new/horizon/.tox/py27integration/local/lib/python2.7/site-packages/testtools/testcase.py",
line 435, in assertThat
2015-11-24 19:48:29.626 | 2015-11-24 19:48:29.613 | raise mismatch_error
2015-11-24 19:48:29.627 | 2015-11-24 19:48:29.614 |
testtools.matchers._impl.MismatchError: 'http://docs.openstack.org/' !=
u'http://localhost/dashboard/project/': help link did not redirect to the right
URL
The second one looks more like the command to switch the window was
issued before window was actually opened. If that's truly the root
cause, fix should be trivial.
** Tags added: integration-tests
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Dashboard (Horizon).
https://bugs.launchpad.net/bugs/1520582
Title:
Recent fix to integration tests didn't fix the intermittent
test_dashboard_help_redirection failure
Status in OpenStack Dashboard (Horizon):
New
Bug description:
A watchful reviewer may notice that sometimes
test_dashboard_help_redirection fails. Initially I thought that it was
caught by an increased network timeout from Jenkins worker node to
docs.openstack.org site. So I made a patch
https://github.com/openstack/horizon/commit/6474215840d4cdde3751c335f46f32cb317238c0
Recently I found that this intermittent failure still occurs. This
time I reproduced the network delay by means of script (run as root):
delay.sh
<BEGIN OF FILE>
delay=$1
ip=$2
tc qdisc del dev eth0 root
if [ -n $delay ]; then
tc qdisc add dev eth0 root handle 1: prio
tc filter add dev eth0 parent 1:0 protocol ip pref 55 handle ::55 u32
match ip dst $ip flowid 2:1
tc qdisc add dev eth0 parent 1:1 handle 2: netem delay ${delay}ms
fi
<END OF FILE>
I realized that first the window is opened, then it waits for the page
to become accessible, and if I set timeout large enough (say, 10
seconds), I get the following traceback:
Error
Traceback (most recent call last):
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 133, in run
self.runTest(result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/nose/case.py",
line 151, in runTest
test(result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/unittest2/case.py",
line 673, in __call__
return self.run(*args, **kwds)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 606, in run
return run_test.run(result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 80, in run
return self._run_one(actual_result)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 94, in _run_one
return self._run_prepared_result(ExtendedToOriginalDecorator(result))
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 108, in _run_prepared_result
self._run_core()
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 149, in _run_core
self.case._run_teardown, self.result):
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 193, in _run_user
return self._got_user_exception(sys.exc_info())
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/runtest.py",
line 213, in _got_user_exception
self.case.onException(exc_info, tb_label=tb_label)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/testtools/testcase.py",
line 558, in onException
handler(exc_info)
File
"/home/timur/develop/horizon/openstack_dashboard/test/integration_tests/helpers.py",
line 132, in _save_screenshot
self.driver.get_screenshot_as_file(filename)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 758, in get_screenshot_as_file
png = self.get_screenshot_as_png()
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 777, in get_screenshot_as_png
return base64.b64decode(self.get_screenshot_as_base64().encode('ascii'))
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 787, in get_screenshot_as_base64
return self.execute(Command.SCREENSHOT)['value']
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",
line 199, in execute
response = self.command_executor.execute(driver_command, params)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 395, in execute
return self._request(command_info[0], url, body=data)
File
"/home/timur/develop/horizon/.venv/local/lib/python2.7/site-packages/selenium/webdriver/remote/remote_connection.py",
line 425, in _request
self._conn.request(method, parsed_url.path, body, headers)
File "/usr/lib/python2.7/httplib.py", line 979, in request
self._send_request(method, url, body, headers)
File "/usr/lib/python2.7/httplib.py", line 1013, in _send_request
self.endheaders(body)
File "/usr/lib/python2.7/httplib.py", line 975, in endheaders
self._send_output(message_body)
File "/usr/lib/python2.7/httplib.py", line 835, in _send_output
self.send(msg)
File "/usr/lib/python2.7/httplib.py", line 797, in send
self.connect()
File "/usr/lib/python2.7/httplib.py", line 778, in connect
self.timeout, self.source_address)
File "/usr/lib/python2.7/socket.py", line 571, in create_connection
raise err
error: [Errno 111] Connection refused
It's different from the traceback that follows intermittent failure on
gate:
2015-11-24 19:48:29.619 | 2015-11-24 19:48:29.606 | Traceback (most recent
call last):
2015-11-24 19:48:29.620 | 2015-11-24 19:48:29.607 | File
"/opt/stack/new/horizon/openstack_dashboard/test/integration_tests/tests/test_dashboard_help_redirection.py",
line 28, in test_dashboard_help_redirection
2015-11-24 19:48:29.621 | 2015-11-24 19:48:29.608 | "help link did not
redirect to the right URL")
2015-11-24 19:48:29.623 | 2015-11-24 19:48:29.609 | File
"/opt/stack/new/horizon/.tox/py27integration/local/lib/python2.7/site-packages/testtools/testcase.py",
line 350, in assertEqual
2015-11-24 19:48:29.624 | 2015-11-24 19:48:29.610 |
self.assertThat(observed, matcher, message)
2015-11-24 19:48:29.625 | 2015-11-24 19:48:29.611 | File
"/opt/stack/new/horizon/.tox/py27integration/local/lib/python2.7/site-packages/testtools/testcase.py",
line 435, in assertThat
2015-11-24 19:48:29.626 | 2015-11-24 19:48:29.613 | raise mismatch_error
2015-11-24 19:48:29.627 | 2015-11-24 19:48:29.614 |
testtools.matchers._impl.MismatchError: 'http://docs.openstack.org/' !=
u'http://localhost/dashboard/project/': help link did not redirect to the right
URL
The second one looks more like the command to switch the window was
issued before window was actually opened. If that's truly the root
cause, fix should be trivial.
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