diff --git a/src/busctl/busctl-introspect.c b/src/busctl/busctl-introspect.c
index 4dbb11f15b..9fbe9ebb5e 100644
--- a/src/busctl/busctl-introspect.c
+++ b/src/busctl/busctl-introspect.c
@@ -228,7 +228,7 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
                                    (t == XML_TAG_CLOSE && streq_ptr(name, "node"))) {
 
                                 if (context->ops->on_path) {
-                                        r = context->ops->on_path(node_path ? node_path : np, context->userdata);
+                                        r = context->ops->on_path(node_path ?: np, context->userdata);
                                         if (r < 0)
                                                 return r;
                                 }
@@ -250,7 +250,6 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
                                 if (name[0] == '/')
                                         node_path = TAKE_PTR(name);
                                 else {
-
                                         node_path = path_join(prefix, name);
                                         if (!node_path)
                                                 return log_oom();
diff --git a/src/busctl/busctl-introspect.h b/src/busctl/busctl-introspect.h
index 1a045bea1d..720a0df79a 100644
--- a/src/busctl/busctl-introspect.h
+++ b/src/busctl/busctl-introspect.h
@@ -2,6 +2,7 @@
 #pragma once
 
 #include <stdbool.h>
+#include <stdint.h>
 
 typedef struct XMLIntrospectOps {
         int (*on_path)(const char *path, void *userdata);
diff --git a/src/busctl/busctl.c b/src/busctl/busctl.c
index 27210e9389..30a86234d9 100644
--- a/src/busctl/busctl.c
+++ b/src/busctl/busctl.c
@@ -464,14 +464,6 @@ static int tree_one(sd_bus *bus, const char *service) {
         if (r < 0)
                 return log_oom();
 
-        done = set_new(&string_hash_ops_free);
-        if (!done)
-                return log_oom();
-
-        failed = set_new(&string_hash_ops_free);
-        if (!failed)
-                return log_oom();
-
         for (;;) {
                 _cleanup_free_ char *p = NULL;
                 int q;
@@ -488,7 +480,7 @@ static int tree_one(sd_bus *bus, const char *service) {
                 if (q < 0 && r >= 0)
                         r = q;
 
-                q = set_consume(q < 0 ? failed : done, TAKE_PTR(p));
+                q = set_ensure_consume(q < 0 ? &failed : &done, &string_hash_ops_free, TAKE_PTR(p));
                 assert(q != 0);
                 if (q < 0)
                         return log_oom();
diff --git a/src/busctl/meson.build b/src/busctl/meson.build
index aacd0b270d..f463436fab 100644
--- a/src/busctl/meson.build
+++ b/src/busctl/meson.build
@@ -4,3 +4,9 @@ busctl_sources = files(
         'busctl-introspect.c',
         'busctl-introspect.h',
         'busctl.c')
+
+tests += [
+        [['src/busctl/test-busctl-introspect.c',
+          'src/busctl/busctl-introspect.c',
+          'src/busctl/busctl-introspect.h']],
+]
diff --git a/src/busctl/test-busctl-introspect.c b/src/busctl/test-busctl-introspect.c
new file mode 100644
index 0000000000..862a92a0e2
--- /dev/null
+++ b/src/busctl/test-busctl-introspect.c
@@ -0,0 +1,410 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "busctl-introspect.h"
+#include "set.h"
+#include "strv.h"
+#include "tests.h"
+
+static const char *xml_root =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  " <node name=\"org\"/>\n"
+                  "</node>\n";
+
+static const char *xml_org =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  " <node name=\"freedesktop\"/>\n"
+                  "</node>\n";
+
+static const char *xml_org_freedesktop =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  " <node name=\"LogControl1\"/>\n"
+                  " <node name=\"network1\"/>\n"
+                  "</node>\n";
+
+static const char *xml_org_freedesktop_LogControl1 =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  "<interface name=\"org.freedesktop.LogControl1\">\n"
+                  "  <property name=\"LogLevel\" type=\"s\" access=\"readwrite\">\n"
+                  "   <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n"
+                  "   <annotation name=\"org.freedesktop.systemd1.Privileged\" value=\"true\"/>\n"
+                  "  </property>\n"
+                  "  <property name=\"LogTarget\" type=\"s\" access=\"readwrite\">\n"
+                  "   <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n"
+                  "   <annotation name=\"org.freedesktop.systemd1.Privileged\" value=\"true\"/>\n"
+                  "  </property>\n"
+                  "  <property name=\"SyslogIdentifier\" type=\"s\" access=\"read\">\n"
+                  "   <annotation name=\"org.freedesktop.DBus.Property.EmitsChangedSignal\" value=\"false\"/>\n"
+                  "  </property>\n"
+                  " </interface>\n"
+                  "</node>\n";
+
+static const char *xml_org_freedesktop_network1 =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  " <node name=\"network\"/>\n"
+                  "</node>\n";
+
+static const char *xml_org_freedesktop_network1_network =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  " <node name=\"0\"/>\n"
+                  " <node name=\"1\"/>\n"
+                  " <node name=\"2\"/>\n"
+                  " <node name=\"3\"/>\n"
+                  " <node name=\"4\"/>\n"
+                  " <node name=\"5\"/>\n"
+                  " <node name=\"6\"/>\n"
+                  " <node name=\"7\"/>\n"
+                  " <node name=\"8\"/>\n"
+                  " <node name=\"9\"/>\n"
+                  " <node name=\"10\"/>\n"
+                  " <node name=\"11\"/>\n"
+                  " <node name=\"12\"/>\n"
+                  " <node name=\"13\"/>\n"
+                  " <node name=\"14\"/>\n"
+                  " <node name=\"15\"/>\n"
+                  " <node name=\"16\"/>\n"
+                  " <node name=\"17\"/>\n"
+                  " <node name=\"18\"/>\n"
+                  " <node name=\"19\"/>\n"
+                  " <node name=\"20\"/>\n"
+                  "</node>\n";
+
+static const char *xml_org_freedesktop_network1_network_unsigned =
+        "<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n\"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
+                  "<node>\n"
+                  " <interface name=\"org.freedesktop.DBus.Peer\">\n"
+                  "  <method name=\"Ping\"/>\n"
+                  "  <method name=\"GetMachineId\">\n"
+                  "   <arg type=\"s\" name=\"machine_uuid\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Introspectable\">\n"
+                  "  <method name=\"Introspect\">\n"
+                  "   <arg name=\"data\" type=\"s\" direction=\"out\"/>\n"
+                  "  </method>\n"
+                  " </interface>\n"
+                  " <interface name=\"org.freedesktop.DBus.Properties\">\n"
+                  "  <method name=\"Get\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"out\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"GetAll\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"properties\" direction=\"out\" type=\"a{sv}\"/>\n"
+                  "  </method>\n"
+                  "  <method name=\"Set\">\n"
+                  "   <arg name=\"interface\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"property\" direction=\"in\" type=\"s\"/>\n"
+                  "   <arg name=\"value\" direction=\"in\" type=\"v\"/>\n"
+                  "  </method>\n"
+                  "  <signal name=\"PropertiesChanged\">\n"
+                  "   <arg type=\"s\" name=\"interface\"/>\n"
+                  "   <arg type=\"a{sv}\" name=\"changed_properties\"/>\n"
+                  "   <arg type=\"as\" name=\"invalidated_properties\"/>\n"
+                  "  </signal>\n"
+                  " </interface>\n"
+                  " <node name=\"hoge\"/>\n"
+                  "</node>\n";
+
+static int on_path(const char *path, void *userdata) {
+        Set *paths = userdata;
+
+        assert_se(paths);
+        assert_se(set_put_strdup(&paths, path) >= 0);
+
+        return 0;
+}
+
+static void test_introspect_on_path(void) {
+        static const XMLIntrospectOps ops = {
+                .on_path = on_path,
+        };
+        _cleanup_strv_free_ char **expected = NULL;
+        _cleanup_set_free_ Set *paths = NULL;
+        _cleanup_free_ char **l = NULL;
+
+        log_info("/* %s */", __func__);
+
+        assert_se(set_put_strdup(&paths, "/") > 0);
+
+        log_debug("/* parse_xml_introspect(\"/\") */");
+        assert_se(parse_xml_introspect("/", xml_root, &ops, paths) >= 0);
+        log_debug("/* parse_xml_introspect(\"/org\") */");
+        assert_se(parse_xml_introspect("/org", xml_org, &ops, paths) >= 0);
+        log_debug("/* parse_xml_introspect(\"/org/freedesktop\") */");
+        assert_se(parse_xml_introspect("/org/freedesktop", xml_org_freedesktop, &ops, paths) >= 0);
+        log_debug("/* parse_xml_introspect(\"/org/freedesktop/LogControl1\") */");
+        assert_se(parse_xml_introspect("/org/freedesktop/LogControl1", xml_org_freedesktop_LogControl1, &ops, paths) >= 0);
+        log_debug("/* parse_xml_introspect(\"/org/freedesktop/network1\") */");
+        assert_se(parse_xml_introspect("/org/freedesktop/network1", xml_org_freedesktop_network1, &ops, paths) >= 0);
+        log_debug("/* parse_xml_introspect(\"/org/freedesktop/network1/network\") */");
+        assert_se(parse_xml_introspect("/org/freedesktop/network1/network", xml_org_freedesktop_network1_network, &ops, paths) >= 0);
+        for (unsigned i = 0; i <= 20; i++) {
+                _cleanup_free_ char *path = NULL;
+
+                assert_se(asprintf(&path, "/org/freedesktop/network1/network/%u", i) >= 0);
+                log_debug("/* parse_xml_introspect(\"%s\") */", path);
+                assert_se(parse_xml_introspect(path, xml_org_freedesktop_network1_network_unsigned, &ops, paths) >= 0);
+        }
+
+        assert_se(l = set_get_strv(paths));
+        strv_sort(l);
+
+        assert_se(strv_extend(&expected, "/") >= 0);
+        assert_se(strv_extend(&expected, "/org") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/LogControl1") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/0") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/0/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/1") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/1/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/2") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/2/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/3") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/3/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/4") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/4/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/5") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/5/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/6") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/6/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/7") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/7/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/8") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/8/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/9") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/9/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/10") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/10/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/11") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/11/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/12") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/12/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/13") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/13/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/14") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/14/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/15") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/15/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/16") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/16/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/17") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/17/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/18") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/18/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/19") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/19/hoge") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/20") >= 0);
+        assert_se(strv_extend(&expected, "/org/freedesktop/network1/network/20/hoge") >= 0);
+
+        strv_sort(expected);
+        assert_se(strv_equal(l, expected));
+}
+
+int main(int argc, char *argv[]) {
+        test_setup_logging(LOG_DEBUG);
+
+        test_introspect_on_path();
+
+        return 0;
+}