tests/integration: Automate manual 'nethost' test

Signed-off-by: Monika Kairaityte <monika@kibit.lt>

tests/integration/nethost/docker-compose.yaml

@@ -2,6 +2,5 @@ version: '3'
 services:
   web:
     image: busybox
-    command: httpd -f -p 8123 -h /etc/
+    command: httpd -f -p 8123 -h /tmp/ # Listen for incoming HTTP requests (webserver).
     network_mode: host
-

tests/integration/test_podman_compose_nethost.py

@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0
+
+import os
+import json
+import requests
+import unittest
+
+from tests.integration.test_podman_compose import podman_compose_path
+from tests.integration.test_podman_compose import test_path
+from tests.integration.test_utils import RunSubprocessMixin
+
+
+def compose_yaml_path():
+    return os.path.join(os.path.join(test_path(), "nethost"), "docker-compose.yaml")
+
+
+class TestComposeNethost(unittest.TestCase, RunSubprocessMixin):
+    # check if container listens for http requests and sends response back
+    # as network_mode: host allows to connect to container easily
+    def test_nethost(self):
+        try:
+            self.run_subprocess_assert_returncode(
+                [podman_compose_path(), "-f", compose_yaml_path(), "up", "-d"],
+            )
+
+            container_id, _ = self.run_subprocess_assert_returncode(
+                [
+                    podman_compose_path(),
+                    "-f",
+                    compose_yaml_path(),
+                    "ps",
+                    "--format",
+                    '{{.ID}}',
+                ],
+            )
+            container_id = container_id.decode('utf-8').split('\n')[0]
+            output, _ = self.run_subprocess_assert_returncode(
+                [
+                    "podman",
+                    "exec",
+                    "-it",
+                    container_id,
+                    "sh",
+                    "-c",
+                    "echo test_123 >> /tmp/test.txt",
+                ],
+            )
+            response = requests.get('http://localhost:8123/test.txt')
+            self.assertEqual(response.ok, True)
+            self.assertEqual(response.text, "test_123\n")
+        finally:
+            self.run_subprocess_assert_returncode([
+                podman_compose_path(),
+                "-f",
+                compose_yaml_path(),
+                "down",
+                "-t",
+                "0",
+            ])