test(userspace/libsinsp/parsers): add setgid parsing test

Signed-off-by: Tero Kauppinen <tero.kauppinen@est.tech>

Author: terror96

userspace/libsinsp/test/parsers/parse_setgid.cpp

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: Apache-2.0
+/*
+Copyright (C) 2024 The Falco Authors.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+#include <sinsp_with_test_input.h>
+
+TEST_F(sinsp_with_test_input, SETGID_success) {
+	add_default_init_thread();
+	open_inspector();
+
+	int64_t return_value = 0;
+	uint32_t gid = 66;
+
+	const auto evt = add_event_advance_ts(increasing_ts(),
+	                                      INIT_TID,
+	                                      PPME_SYSCALL_SETGID_X,
+	                                      2,
+	                                      return_value,
+	                                      gid);
+
+	// Check that the returned value is as expected.
+	ASSERT_EQ(evt->get_param_by_name("res")->as<int64_t>(), return_value);
+
+	// Check that the gid value is as expected.
+	ASSERT_EQ(evt->get_param_by_name("gid")->as<uint32_t>(), gid);
+}