nixos/octoprint: add tests for reachability over IPv6

nixos/tests/octoprint.nix

@@ -54,16 +54,22 @@ import ./make-test-python.nix (
       curl_cmd = "curl --retry-all-errors --connect-timeout 5 --max-time 10 --retry 5 --retry-delay 0 \
                   --retry-max-time 40 -X GET --header 'X-API-Key: ${apikey}' "
 
-      # used to fail early, in case octoprint first starts and then crashes
-      with octoprint_running: # type: ignore[union-attr]
-          with subtest("Check for web interface"):
-              machine.wait_until_succeeds("curl -s localhost:5000")
+    # used to fail early, in case octoprint first starts and then crashes
+    with octoprint_running: # type: ignore[union-attr]
+        with subtest("Check for web interface"):
+            machine.wait_until_succeeds("curl -s -4 localhost:5000")
+            machine.wait_until_succeeds("curl -s -6 localhost:5000")
 
-          with subtest("Check API"):
-              version = json.loads(machine.succeed(curl_cmd + "localhost:5000/api/version"))
-              server = json.loads(machine.succeed(curl_cmd + "localhost:5000/api/server"))
-              assert version["server"] == str("${pkgs.octoprint.version}")
-              assert server["safemode"] == None
-    '';
-  }
-)
+        with subtest("Check API IPv4"):
+            version = json.loads(machine.succeed(curl_cmd + "-4 localhost:5000/api/version"))
+            server = json.loads(machine.succeed(curl_cmd + "-4 localhost:5000/api/server"))
+            assert version["server"] == str("${pkgs.octoprint.version}")
+            assert server["safemode"] == None
+
+        with subtest("Check API IPv6"):
+            version = json.loads(machine.succeed(curl_cmd + "-6 localhost:5000/api/version"))
+            server = json.loads(machine.succeed(curl_cmd + "-6 localhost:5000/api/server"))
+            assert version["server"] == str("${pkgs.octoprint.version}")
+            assert server["safemode"] == None
+  '';
+})