ci: probe runtime through Docker exec

tests/test_addon_metadata.py

@@ -151,6 +151,15 @@ def test_runtime_copies_options_without_a_host_bind_mount() -> None:
     assert "--mount" not in runtime_test
 
 
+def test_runtime_probes_service_inside_container_network_namespace() -> None:
+    runtime_test = (ROOT / "tests/test_runtime.sh").read_text(encoding="utf-8")
+    assert 'probe_root "$container"' in runtime_test
+    assert 'post_invalid_worker "$first_container"' in runtime_test
+    assert 'assert_8080_loopback_mapping "$first_container"' in runtime_test
+    assert 'assert_8080_loopback_mapping "$second_container"' in runtime_test
+    assert 'f"http://127.0.0.1:{sys.argv[1]}/"' not in runtime_test
+
+
 def test_ci_builds_and_loads_only_the_amd64_test_image() -> None:
     workflow = (ROOT / ".gitea/workflows/ci.yml").read_text(encoding="utf-8")
     parsed = yaml.safe_load(workflow)
@@ -253,9 +262,10 @@ def test_runtime_requires_process_baseline_after_cdp_close_and_zero_stopped_pid(
         baseline = (
             f'{prefix}_baseline="$(capture_process_baseline "{container}")"'
         )
-        ready_index = runtime_test.index(
-            f'wait_ready "{container}" "${prefix}_port"'
+        mapping_index = runtime_test.index(
+            f'assert_8080_loopback_mapping "{container}"'
         )
+        ready_index = runtime_test.index(f'wait_ready "{container}"')
         baseline_index = runtime_test.index(baseline)
         close_index = runtime_test.index(
             f'probe_and_close_cdp "{container}"', baseline_index
@@ -264,7 +274,7 @@ def test_runtime_requires_process_baseline_after_cdp_close_and_zero_stopped_pid(
             f'assert_processes_return_to_baseline "{container}" "${prefix}_baseline"',
             close_index,
         )
-        assert ready_index < baseline_index < close_index < return_index
+        assert mapping_index < ready_index < baseline_index < close_index < return_index
     assert "{{.State.Pid}}" in runtime_test
     assert '[ "$state" = "exited 0 0" ]' in runtime_test