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from __future__ import print_function
import asyncio
from opentracing.mocktracer import MockTracer
from opentracing.scope_managers.asyncio import AsyncioScopeManager
from ..testcase import OpenTracingTestCase
from ..utils import stop_loop_when
class TestAsyncio(OpenTracingTestCase):
def setUp(self):
self.tracer = MockTracer(AsyncioScopeManager())
self.loop = asyncio.get_event_loop()
def test_main(self):
# Start a Span and let the callback-chain
# finish it when the task is done
async def task():
with self.tracer.start_active_span('one', finish_on_close=False):
self.submit()
self.loop.create_task(task())
stop_loop_when(self.loop,
lambda: len(self.tracer.finished_spans()) == 1)
self.loop.run_forever()
spans = self.tracer.finished_spans()
self.assertEqual(len(spans), 1)
self.assertEqual(spans[0].operation_name, 'one')
for i in range(1, 4):
self.assertEqual(spans[0].tags.get('key%s' % i, None), str(i))
def submit(self):
span = self.tracer.scope_manager.active.span
async def task1():
with self.tracer.scope_manager.activate(span, False):
span.set_tag('key1', '1')
async def task2():
with self.tracer.scope_manager.activate(span, False):
span.set_tag('key2', '2')
async def task3():
with self.tracer.scope_manager.activate(span,
False):
span.set_tag('key3', '3')
span.finish()
self.loop.create_task(task3())
self.loop.create_task(task2())
self.loop.create_task(task1())
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