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# Copyright The OpenTelemetry 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.
import asyncio
from unittest import TestCase
from opentelemetry.trace import (
INVALID_SPAN,
NoOpTracer,
Span,
Tracer,
_agnosticcontextmanager,
get_current_span,
)
class TestTracer(TestCase):
def setUp(self):
self.tracer = NoOpTracer()
def test_start_span(self):
with self.tracer.start_span("") as span:
self.assertIsInstance(span, Span)
def test_start_as_current_span_context_manager(self):
with self.tracer.start_as_current_span("") as span:
self.assertIsInstance(span, Span)
def test_start_as_current_span_decorator(self):
# using a list to track the mock call order
calls = []
class MockTracer(Tracer):
def start_span(self, *args, **kwargs):
return INVALID_SPAN
@_agnosticcontextmanager # pylint: disable=protected-access
def start_as_current_span(self, *args, **kwargs): # type: ignore
calls.append(1)
yield INVALID_SPAN
calls.append(9)
mock_tracer = MockTracer()
# test 1 : sync function
@mock_tracer.start_as_current_span("name")
def function_sync(data: str) -> int:
calls.append(5)
return len(data)
calls = []
res = function_sync("123")
self.assertEqual(res, 3)
self.assertEqual(calls, [1, 5, 9])
# test 2 : async function
@mock_tracer.start_as_current_span("name")
async def function_async(data: str) -> int:
calls.append(5)
return len(data)
calls = []
res = asyncio.run(function_async("123"))
self.assertEqual(res, 3)
self.assertEqual(calls, [1, 5, 9])
def test_get_current_span(self):
with self.tracer.start_as_current_span("test") as span:
get_current_span().set_attribute("test", "test")
self.assertEqual(span, INVALID_SPAN)
self.assertFalse(hasattr("span", "attributes"))
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