mgmt: Fix compilation and test cases when dropping privileges is not supported

Change-Id: I7da7eca3e5019dd5a7ed20b26f6e0c3260a03850
Refs: #3064, #2447
diff --git a/tests/daemon/mgmt/general-config-section.t.cpp b/tests/daemon/mgmt/general-config-section.t.cpp
index ed52046..3428624 100644
--- a/tests/daemon/mgmt/general-config-section.t.cpp
+++ b/tests/daemon/mgmt/general-config-section.t.cpp
@@ -39,30 +39,16 @@
 public:
   ~GeneralConfigSectionFixture()
   {
+#ifdef HAVE_PRIVILEGE_DROP_AND_ELEVATE
     // revert changes to s_normalUid/s_normalGid, if any
     PrivilegeHelper::s_normalUid = ::geteuid();
     PrivilegeHelper::s_normalGid = ::getegid();
+#endif // HAVE_PRIVILEGE_DROP_AND_ELEVATE
   }
 };
 
 BOOST_FIXTURE_TEST_SUITE(MgmtGeneralConfigSection, GeneralConfigSectionFixture)
 
-BOOST_AUTO_TEST_CASE(UserAndGroupConfig)
-{
-  const std::string CONFIG =
-    "general\n"
-    "{\n"
-    "  user nobody\n"
-    "  group nogroup\n"
-    "}\n";
-
-  ConfigFile configFile;
-
-  general::setConfigFile(configFile);
-  BOOST_CHECK_NO_THROW(configFile.parse(CONFIG, true, "test-general-config-section"));
-
-}
-
 BOOST_AUTO_TEST_CASE(DefaultConfig)
 {
   const std::string CONFIG =
@@ -78,6 +64,23 @@
   BOOST_CHECK(getRouterName().getName().empty());
 }
 
+#ifdef HAVE_PRIVILEGE_DROP_AND_ELEVATE
+
+BOOST_AUTO_TEST_CASE(UserAndGroupConfig)
+{
+  const std::string CONFIG =
+    "general\n"
+    "{\n"
+    "  user nobody\n"
+    "  group nogroup\n"
+    "}\n";
+
+  ConfigFile configFile;
+
+  general::setConfigFile(configFile);
+  BOOST_CHECK_NO_THROW(configFile.parse(CONFIG, true, "test-general-config-section"));
+}
+
 BOOST_AUTO_TEST_CASE(NoUserConfig)
 {
   const std::string CONFIG =
@@ -106,6 +109,8 @@
   BOOST_CHECK_NO_THROW(configFile.parse(CONFIG, true, "test-general-config-section"));
 }
 
+#endif // HAVE_PRIVILEGE_DROP_AND_ELEVATE
+
 static bool
 checkExceptionMessage(const ConfigFile::Error& error, const std::string& expected)
 {