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

Signed-off-by: Leonardo Di Giovanna <[email protected]>

Author: ekoops

userspace/libsinsp/test/parsers/parse_poll.cpp

@@ -0,0 +1,42 @@
+
+// SPDX-License-Identifier: Apache-2.0
+/*
+Copyright (C) 2025 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>
+#include <vector>
+
+TEST_F(sinsp_with_test_input, POLL_success) {
+	add_default_init_thread();
+	open_inspector();
+
+	constexpr int64_t return_value = 55;
+	const std::vector<uint8_t> fds{0x1, 0x0, 0x16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0};
+	constexpr int64_t timeout = 1000;
+	const auto evt = add_event_advance_ts(increasing_ts(),
+	                                      INIT_TID,
+	                                      PPME_SYSCALL_POLL_X,
+	                                      3,
+	                                      return_value,
+	                                      scap_const_sized_buffer{fds.data(), fds.size()},
+	                                      timeout);
+
+	// Check that the returned value is as expected.
+	ASSERT_EQ(evt->get_param_by_name("res")->as<int64_t>(), return_value);
+
+	// Check that the fds value is as expected.
+	ASSERT_EQ(evt->get_param_by_name("fds")->as<std::vector<uint8_t>>(), fds);
+
+	// Check that the timeout value is as expected.
+	ASSERT_EQ(evt->get_param_by_name("timeout")->as<int64_t>(), timeout);
+}