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# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See LICENSE.txt in the project root for
# license information.
# -------------------------------------------------------------------------
import time
import pytest
import signal
import os
import subprocess
import random
import platform
import urllib
from typing import Generator
from corehttp.settings import settings
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export.in_memory_span_exporter import InMemorySpanExporter
from opentelemetry.sdk.trace.export import SimpleSpanProcessor
from rest_client import MockRestClient
def is_port_available(port_num):
req = urllib.request.Request("http://localhost:{}/health".format(port_num))
try:
return urllib.request.urlopen(req).code != 200
except Exception as e:
return True
def get_port():
count = 3
for _ in range(count):
port_num = random.randrange(3000, 5000)
if is_port_available(port_num):
return port_num
raise TypeError("Tried {} times, can't find an open port".format(count))
@pytest.fixture
def port():
return os.environ["FLASK_PORT"]
def start_testserver():
port = get_port()
os.environ["FLASK_APP"] = "coretestserver"
os.environ["FLASK_PORT"] = str(port)
if platform.python_implementation() == "PyPy":
# pypy is now getting mad at us for some of our encoding / text, so need
# to set these additional env vars for pypy
os.environ["LC_ALL"] = "C.UTF-8"
os.environ["LANG"] = "C.UTF-8"
cmd = "flask run -p {}".format(port)
if os.name == "nt": # On windows, subprocess creation works without being in the shell
child_process = subprocess.Popen(cmd, env=dict(os.environ))
else:
# On linux, have to set shell=True
child_process = subprocess.Popen(cmd, shell=True, preexec_fn=os.setsid, env=dict(os.environ))
count = 5
for _ in range(count):
if not is_port_available(port):
return child_process
time.sleep(1)
raise ValueError("Didn't start!")
def terminate_testserver(process):
if os.name == "nt":
process.kill()
else:
os.killpg(os.getpgid(process.pid), signal.SIGTERM) # Send the signal to all the process groups
@pytest.fixture(autouse=True, scope="package")
def testserver():
"""Start the Autorest testserver."""
server = start_testserver()
yield
terminate_testserver(server)
@pytest.fixture
def client(port):
return MockRestClient(port)
class TracingTestHelper:
def __init__(self, tracer, exporter):
self.tracer = tracer
self.exporter = exporter
@pytest.fixture(scope="session", autouse=True)
def enable_tracing():
provider = TracerProvider()
trace.set_tracer_provider(provider)
@pytest.fixture(scope="function")
def tracing_helper() -> Generator[TracingTestHelper, None, None]:
settings.tracing_enabled = True
span_exporter = InMemorySpanExporter()
processor = SimpleSpanProcessor(span_exporter)
trace.get_tracer_provider().add_span_processor(processor)
yield TracingTestHelper(trace.get_tracer(__name__), span_exporter)
settings.tracing_enabled = False
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