podman-compose down removes networks

Fixes #490

newsfragments/down-removes-network.feature

@@ -0,0 +1 @@
+podman-compose down removes networks.

podman_compose.py

@@ -1452,6 +1452,24 @@ async def format_out(stdout):
             log.info("exit code: %s", exit_code)
             return exit_code
 
+    async def network_ls(self):
+        output = (
+            await self.output(
+                [],
+                "network",
+                [
+                    "ls",
+                    "--noheading",
+                    "--filter",
+                    f"label=io.podman.compose.project={self.compose.project_name}",
+                    "--format",
+                    "{{.Name}}",
+                ],
+            )
+        ).decode("utf-8")
+        networks = output.splitlines()
+        return networks
+
     async def volume_ls(self):
         output = (
             await self.output(
@@ -2612,7 +2630,7 @@ def get_volume_names(compose, cnt):
 
 
 @cmd_run(podman_compose, "down", "tear down entire stack")
-async def compose_down(compose, args):
+async def compose_down(compose: PodmanCompose, args):
     excluded = get_excluded(compose, args)
     podman_args = []
     timeout_global = getattr(args, "timeout", None)
@@ -2678,6 +2696,8 @@ async def compose_down(compose, args):
         return
     for pod in compose.pods:
         await compose.podman.run([], "pod", ["rm", pod["name"]])
+    for network in await compose.podman.network_ls():
+        await compose.podman.run([], "network", ["rm", network])
 
 
 @cmd_run(podman_compose, "ps", "show status of containers")

tests/integration/network/docker-compose.yml

@@ -0,0 +1,23 @@
+version: "3"
+networks:
+    mystack:
+services:
+    web1:
+      image: busybox
+      hostname: web1
+      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8001"]
+      working_dir: /var/www/html
+      ports:
+        - 8001:8001
+      volumes:
+        - ./test1.txt:/var/www/html/index.txt:ro,z
+    web2:
+      image: busybox
+      hostname: web2
+      command: ["/bin/busybox", "httpd", "-f", "-h", "/var/www/html", "-p", "8001"]
+      working_dir: /var/www/html
+      ports:
+        - 8002:8001
+      volumes:
+        - ./test2.txt:/var/www/html/index.txt:ro,z
+

tests/integration/network/test1.txt

@@ -0,0 +1 @@
+test1

tests/integration/network/test2.txt

@@ -0,0 +1 @@
+test2

tests/integration/test_podman_compose_tests.py

@@ -187,3 +187,33 @@ def test_down_with_orphans(self):
             ],
             1,
         )
+
+    def test_down_with_network(self):
+        up_cmd = [
+            "coverage",
+            "run",
+            podman_compose_path(),
+            "-f",
+            os.path.join(test_path(), "network", "docker-compose.yml"),
+            "up",
+            "-d",
+        ]
+
+        down_cmd = [
+            "coverage",
+            "run",
+            podman_compose_path(),
+            "-f",
+            os.path.join(test_path(), "network", "docker-compose.yml"),
+            "down",
+        ]
+
+        try:
+            self.run_subprocess_assert_returncode(up_cmd)
+            output, _, _ = self.run_subprocess(["podman", "network", "ls"])
+            self.assertIn("network_mystack", output.decode())
+        finally:
+            out, _, return_code = self.run_subprocess(down_cmd)
+            self.assertEqual(return_code, 0)
+            output, _, _ = self.run_subprocess(["podman", "network", "ls"])
+            self.assertNotIn("network_mystack", output.decode())