Revert "disable ssl check for tests"

This reverts commit 13a6dcb.

tests/conftest.py

@@ -1,5 +1,10 @@
 import asyncio
+import io
+import ssl
+import subprocess
+import tarfile
 import uuid
+from pathlib import Path
 
 import aiohttp
 import pytest
@@ -26,15 +31,43 @@ def start_pebble(docker_services):
     docker_services.wait_for_service('pebble', 15000)
 
 
+@pytest.fixture(scope='session')
+def pebble_ssl_context(start_pebble, docker_compose_files, docker_services_project_name) -> ssl.SSLContext:
+    # pebble image uses scratch as base image, so we can't use exec to copy the file out
+    proc = subprocess.run(
+        [
+            'docker',
+            'compose',
+            '--project-directory',
+            Path(__file__).parent,
+            '-f',
+            docker_compose_files[0],
+            '-p',
+            docker_services_project_name,
+            'cp',
+            'pebble:test/certs/pebble.minica.pem',
+            '-',
+        ],
+        check=False,
+        capture_output=True,
+    )
+    if proc.returncode != 0:
+        raise RuntimeError(proc.stderr.decode('utf-8'))
+    with tarfile.TarFile(mode='r', fileobj=io.BytesIO(proc.stdout)) as tar:
+        cert = tar.extractfile('pebble.minica.pem').read()
+
+    return ssl.create_default_context(cadata=cert.decode('ascii'))
+
+
 @pytest.fixture()
 def account_key() -> ec.EllipticCurvePrivateKey:
     return ec.generate_private_key(ec.SECP256R1())
 
 
 @pytest.fixture()
-async def client(docker_ip, account_key) -> aioacme.Client:
+async def client(pebble_ssl_context, docker_ip, account_key) -> aioacme.Client:
     async with aioacme.Client(
-        directory_url=f'https://{docker_ip}:14000/dir', ssl=False, account_key=account_key
+        directory_url=f'https://{docker_ip}:14000/dir', ssl=pebble_ssl_context, account_key=account_key
     ) as client:
         yield client