Set up redis on GitHub Actions

I've set up the environment variables for general CI usage, even though
in this case the defaults work.

.github/workflows/main.yml

@@ -13,6 +13,17 @@ jobs:
     name: "Python ${{ matrix.python-version }}"
     runs-on: "ubuntu-latest"
 
+    services:
+      redis:
+        image: redis
+        ports:
+          - 6379:6379
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
     strategy:
       fail-fast: false
       matrix:

tests/test_queues.py

@@ -10,6 +10,9 @@
 
 import pytest
 
+REDIS_HOST = os.environ.get('REDIS_HOST', 'localhost')
+REDIS_PORT = int(os.environ.get('REDIS_PORT', '6379'))
+
 
 @require_module('zmq')
 def test_zeromq_handler(logger, handlers, subscriber):
@@ -225,7 +228,7 @@ def test_redis_handler():
 
     KEY = 'redis-{}'.format(os.getpid())
     FIELDS = ['message', 'host']
-    r = redis.Redis(decode_responses=True)
+    r = redis.Redis(REDIS_HOST, REDIS_PORT, decode_responses=True)
     redis_handler = RedisHandler(key=KEY, level=logbook.INFO, bubble=True)
     # We don't want output for the tests, so we can wrap everything in a
     # NullHandler
@@ -304,7 +307,7 @@ def test_redis_handler_lpush():
 
     time.sleep(1.5)
 
-    r = redis.Redis(decode_responses=True)
+    r = redis.Redis(REDIS_HOST, REDIS_PORT, decode_responses=True)
     logs = r.lrange(KEY, 0, -1)
     assert logs
     assert "new item" in logs[0]
@@ -332,7 +335,7 @@ def test_redis_handler_rpush():
 
     time.sleep(1.5)
 
-    r = redis.Redis(decode_responses=True)
+    r = redis.Redis(REDIS_HOST, REDIS_PORT, decode_responses=True)
     logs = r.lrange(KEY, 0, -1)
     assert logs
     assert "old item" in logs[0]

tox.ini

@@ -7,6 +7,9 @@ extras =
     test
 set_env =
     nospeedups: DISABLE_LOGBOOK_CEXT_AT_RUNTIME=1
+pass_env =
+    REDIS_HOST
+    REDIS_PORT
 commands =
     pytest {posargs}