First tests and updates to default apps to expose Python versions

python2.7-alpine3.7/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return ["Hello World from a default Nginx uWSGI Python 2.7 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container in Alpine (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python2.7-alpine3.8/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return ["Hello World from a default Nginx uWSGI Python 2.7 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container in Alpine (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python2.7/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return ["Hello World from a default Nginx uWSGI Python 2.7 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.5/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.5 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.6-alpine3.7/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.6 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container in Alpine (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.6-alpine3.8/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.6 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container in Alpine (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.6/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.6 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.7-alpine3.7/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.7 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container in Alpine (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.7-alpine3.8/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.7 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container in Alpine (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

python3.7/app/main.py

@@ -1,4 +1,10 @@
+import sys
+
+
 def application(env, start_response):
-    start_response('200 OK', [('Content-Type', 'text/html')])
-    return [b"Hello World from a default Nginx uWSGI Python 3.7 app in a\
-            Docker container (default)"]
+    version = "{}.{}".format(sys.version_info.major, sys.version_info.minor)
+    start_response("200 OK", [("Content-Type", "text/plain")])
+    message = "Hello World from a default Nginx uWSGI Python {} app in a Docker container (default)".format(
+        version
+    )
+    return [message.encode("utf-8")]

tests/test_01_main/test_defaults.py

@@ -0,0 +1,77 @@
+import time
+
+import docker
+import pytest
+import requests
+from requests import Response
+
+from ..utils import CONTAINER_NAME, stop_previous_container, get_uwsgi_config, get_nginx_config
+
+client = docker.from_env()
+
+
+@pytest.mark.parametrize(
+    "image,response_text",
+    [
+        (
+            "tiangolo/uwsgi-nginx:python2.7",
+            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python2.7-alpine3.7",
+            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python2.7-alpine3.8",
+            "Hello World from a default Nginx uWSGI Python 2.7 app in a Docker container in Alpine (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python3.5",
+            "Hello World from a default Nginx uWSGI Python 3.5 app in a Docker container (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python3.6",
+            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python3.6-alpine3.7",
+            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python3.6-alpine3.8",
+            "Hello World from a default Nginx uWSGI Python 3.6 app in a Docker container in Alpine (default)",
+        ),
+        (
+            "tiangolo/uwsgi-nginx:python3.7",
+            "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container (default)",
+        ),
+        # (
+        #     "tiangolo/uwsgi-nginx:python3.7-alpine3.7",
+        #     "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
+        # ),
+        # (
+        #     "tiangolo/uwsgi-nginx:python3.7-alpine3.8",
+        #     "Hello World from a default Nginx uWSGI Python 3.7 app in a Docker container in Alpine (default)",
+        # ),
+    ],
+)
+def test_defaults(image, response_text):
+    stop_previous_container(client)
+    container = client.containers.run(
+        image, name=CONTAINER_NAME, ports={"80": "8000"}, detach=True
+    )
+    uwsgi_config = get_uwsgi_config(container)
+    assert "ini = /app/uwsgi.ini" in uwsgi_config
+    assert "wsgi-file = /app/main.py" in uwsgi_config
+    assert "processes = 16" in uwsgi_config
+    assert "cheaper = 2" in uwsgi_config
+    nginx_config = get_nginx_config(container)
+    assert "client_max_body_size 0;" in nginx_config
+    assert "worker_processes 1;" in nginx_config
+    assert "listen 80;" in nginx_config
+    time.sleep(5)
+    response: Response = requests.get("http://127.0.0.1:8000")
+    assert response.status_code == 200
+    assert response.text == response_text
+    container.stop()
+    container.remove()

tests/utils.py

@@ -0,0 +1,24 @@
+import json
+
+from docker.errors import NotFound
+
+CONTAINER_NAME = "uwsgi-nginx-text"
+
+
+def get_uwsgi_config(container):
+    result = container.exec_run(f"uwsgi --show-config")
+    return result.output.decode()
+
+
+def get_nginx_config(container):
+    result = container.exec_run(f"/usr/sbin/nginx -T")
+    return result.output.decode()
+
+
+def stop_previous_container(client):
+    try:
+        previous = client.containers.get(CONTAINER_NAME)
+        previous.stop()
+        previous.remove()
+    except NotFound:
+        return None