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# Copyright (c) 2019 The Jaeger Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from unittest import mock
from jaeger_client import Span, SpanContext
def test_traceback():
"""Test that a traceback is logged with both location and message"""
mock_tracer = mock.MagicMock()
mock_tracer.max_tag_value_length = 300
mock_tracer.max_traceback_length = 300
context = SpanContext(trace_id=1, span_id=2, parent_id=None, flags=1)
span = Span(context=context, operation_name='traceback_test', tracer=mock_tracer)
try:
with span:
raise ValueError('Something unexpected happened!')
except ValueError:
fields_dict = {field.key: field.vStr for field in span.logs[0].fields}
assert 'stack' in fields_dict
stack_message = fields_dict['stack']
stack_message_lines = stack_message.splitlines()
assert len(stack_message_lines) == 2
assert stack_message_lines[0].startswith(' File ')
assert stack_message_lines[1] == \
" raise ValueError('Something unexpected happened!')"
def test_traceback_cut():
"""Test that a traceback is cut off at max_tag_value_length"""
mock_tracer = mock.MagicMock()
mock_tracer.max_tag_value_length = 300
mock_tracer.max_traceback_length = 5
context = SpanContext(trace_id=1, span_id=2, parent_id=None, flags=1)
span = Span(context=context, operation_name='traceback_test', tracer=mock_tracer)
try:
with span:
raise ValueError('Something unexpected happened!')
except ValueError:
fields_dict = {field.key: field.vStr for field in span.logs[0].fields}
assert 'stack' in fields_dict
stack_message = fields_dict['stack']
assert stack_message == ' Fil'
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