TESTS: add a test to verify nginx conf is update on container creation/deletion

test/test_events.py

@@ -0,0 +1,46 @@
+"""
+Test that nginx-proxy detects new containers
+"""
+from time import sleep
+
+import pytest
+from docker.errors import NotFound
+
+
+@pytest.yield_fixture()
+def web1(docker_compose):
+    """
+    pytest fixture creating a web container with `VIRTUAL_HOST=web1.nginx-proxy` listening on port 81.
+    """
+    container = docker_compose.containers.run(
+        name="web1",
+        image="web",
+        detach=True,
+        environment={
+            "WEB_PORTS": "81",
+            "VIRTUAL_HOST": "web1.nginx-proxy"
+        },
+        ports={"81/tcp": None}
+    )
+    sleep(2)  # give it some time to initialize and for docker-gen to detect it
+    yield container
+    try:
+        docker_compose.containers.get("web1").remove(force=True)
+    except NotFound:
+        pass
+
+
+def test_nginx_proxy_behavior_when_alone(docker_compose, nginxproxy):
+    r = nginxproxy.get("http://nginx-proxy/")
+    assert r.status_code == 503
+
+
+def test_new_container_is_detected(web1, nginxproxy):
+    r = nginxproxy.get("http://web1.nginx-proxy/port")
+    assert r.status_code == 200
+    assert "answer from port 81\n" == r.text
+
+    web1.remove(force=True)
+    sleep(2)
+    r = nginxproxy.get("http://web1.nginx-proxy/port")
+    assert r.status_code == 503

test/test_events.yml

@@ -0,0 +1,4 @@
+nginxproxy:
+  image: jwilder/nginx-proxy:test
+  volumes:
+    - /var/run/docker.sock:/tmp/docker.sock:ro