chore: import upstream snapshot with attribution

samples/common/ArgVec.test.h

@@ -0,0 +1,58 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#ifndef TRT_SAMPLES_COMMON_ARGVEC_TEST_H
+#define TRT_SAMPLES_COMMON_ARGVEC_TEST_H
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+//! Wraps a list of argument strings as argc/argv for use with argument-parsing functions.
+//!
+//! CharPtrT controls the constness of the argv pointers:
+//!   - ArgVec<char*>        for APIs that take char** (e.g. argsToArgumentsMap)
+//!   - ArgVec<char const*>  for APIs that take char const* const* (e.g. getOptions)
+template <typename CharPtrT>
+struct ArgVec
+{
+    explicit ArgVec(std::initializer_list<char const*> strs)
+    {
+        mArgs.emplace_back("prog"); // argv[0] is the program name; argument parsers skip it.
+        mArgs.insert(mArgs.end(), strs.begin(), strs.end());
+        for (auto& s : mArgs)
+        {
+            mArgv.push_back(s.data());
+        }
+    }
+
+    [[nodiscard]] int32_t argc() const
+    {
+        return static_cast<int32_t>(mArgv.size());
+    }
+
+    [[nodiscard]] CharPtrT* argv()
+    {
+        return mArgv.data();
+    }
+
+private:
+    std::vector<std::string> mArgs;
+    std::vector<CharPtrT> mArgv;
+};
+
+#endif // TRT_SAMPLES_COMMON_ARGVEC_TEST_H