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# type:ignore
import unittest
from logging import WARNING
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider # type:ignore
class TestGlobals(unittest.TestCase):
def test_tracer_provider_override_warning(self):
"""trace.set_tracer_provider should throw a warning when overridden"""
trace.set_tracer_provider(TracerProvider())
tracer_provider = trace.get_tracer_provider()
with self.assertLogs(level=WARNING) as test:
trace.set_tracer_provider(TracerProvider())
self.assertEqual(
test.output,
[
(
"WARNING:opentelemetry.trace:Overriding of current "
"TracerProvider is not allowed"
)
],
)
self.assertIs(tracer_provider, trace.get_tracer_provider())
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