def test_restores_observers(self):
from testtools.deferredruntest import run_with_log_observers
from twisted.python import log
# Make sure there's at least one observer. This reproduces bug
# #926189.
log.addObserver(lambda *args: None)
observers = list(log.theLogPublisher.observers)
run_with_log_observers([], lambda: None)
self.assertEqual(observers, log.theLogPublisher.observers)
def test_restores_observers(self):
from testtools.deferredruntest import run_with_log_observers
from twisted.python import log
# Make sure there's at least one observer. This reproduces bug
# #926189.
log.addObserver(lambda *args: None)
observers = list(log.theLogPublisher.observers)
run_with_log_observers([], lambda: None)
self.assertEqual(observers, log.theLogPublisher.observers)
def test_render_error(self):
"""
L{FrontEndAjax.render} displays an error if C{get_message} raises an
exception.
"""
self.message_queue.messages["uuid1"] = ValueError("Not there")
request = FakeRequest({"uuid": ["uuid1"], "sequence": ["0"]})
run_with_log_observers([], self.ajax.render, request)
self.assertEquals(request.written.getvalue(), "Not there")
self.assertEquals(request.code, 500)
def test_branchChanged_stderr_text(self):
# An unexpected error invoking branchChanged() results in a user
# friendly error printed to stderr (and not a traceback).
# Unlocking a branch calls branchChanged x 2 on the branch filesystem
# endpoint. We will then check the error handling.
db_branch = self.factory.makeAnyBranch(branch_type=BranchType.HOSTED,
owner=self.requester)
branch = run_with_log_observers([], self.make_branch,
db_branch.unique_name)
branch.lock_write()
branch.unlock()
stderr_text = sys.stderr.getvalue()
# The text printed to stderr should be like this:
# (we need the prefix text later for extracting the oopsid)
expected_fault_text_prefix = """
<Fault 380: 'An unexpected error has occurred while updating a
Launchpad branch. Please report a Launchpad bug and quote:"""
expected_fault_text = expected_fault_text_prefix + " OOPS-.*'>"
# For our test case, branchChanged() is called twice, hence 2 errors.
expected_stderr = ' '.join([expected_fault_text for x in range(2)])
self.assertTextMatchesExpressionIgnoreWhitespace(
expected_stderr, stderr_text)
# Extract an oops id from the std error text.
# There will be 2 oops ids. The 2nd will be the oops for the last
# logged error report and the 1st will be in the error text from the
# error report.
oopsids = []
stderr_text = ' '.join(stderr_text.split())
expected_fault_text_prefix = ' '.join(
expected_fault_text_prefix.split())
parts = re.split(expected_fault_text_prefix, stderr_text)
for txt in parts:
if len(txt) == 0:
continue
txt = txt.strip()
# The oopsid ends with a '.'
oopsid = txt[:txt.find('.')]
oopsids.append(oopsid)
# Now check the error report - we just check the last one.
self.assertEqual(len(oopsids), 2)
error_report = self.oopses[-1]
# The error report oopsid should match what's print to stderr.
self.assertEqual(error_report['id'], oopsids[1])
# The error report text should contain the root cause oopsid.
self.assertContainsString(error_report['tb_text'],
self.generated_oopsids[1])
def test_branchChanged_stderr_text(self):
# An unexpected error invoking branchChanged() results in a user
# friendly error printed to stderr (and not a traceback).
# Unlocking a branch calls branchChanged x 2 on the branch filesystem
# endpoint. We will then check the error handling.
db_branch = self.factory.makeAnyBranch(
branch_type=BranchType.HOSTED, owner=self.requester)
branch = run_with_log_observers(
[], self.make_branch, db_branch.unique_name)
branch.lock_write()
branch.unlock()
stderr_text = sys.stderr.getvalue()
# The text printed to stderr should be like this:
# (we need the prefix text later for extracting the oopsid)
expected_fault_text_prefix = """
<Fault 380: 'An unexpected error has occurred while updating a
Launchpad branch. Please report a Launchpad bug and quote:"""
expected_fault_text = expected_fault_text_prefix + " OOPS-.*'>"
# For our test case, branchChanged() is called twice, hence 2 errors.
expected_stderr = ' '.join([expected_fault_text for x in range(2)])
self.assertTextMatchesExpressionIgnoreWhitespace(
expected_stderr, stderr_text)
# Extract an oops id from the std error text.
# There will be 2 oops ids. The 2nd will be the oops for the last
# logged error report and the 1st will be in the error text from the
# error report.
oopsids = []
stderr_text = ' '.join(stderr_text.split())
expected_fault_text_prefix = ' '.join(
expected_fault_text_prefix.split())
parts = re.split(expected_fault_text_prefix, stderr_text)
for txt in parts:
if len(txt) == 0:
continue
txt = txt.strip()
# The oopsid ends with a '.'
oopsid = txt[:txt.find('.')]
oopsids.append(oopsid)
# Now check the error report - we just check the last one.
self.assertEqual(len(oopsids), 2)
error_report = self.oopses[-1]
# The error report oopsid should match what's print to stderr.
self.assertEqual(error_report['id'], oopsids[1])
# The error report text should contain the root cause oopsid.
self.assertContainsString(
error_report['tb_text'], self.generated_oopsids[1])
