crashpad/test/main_arguments.h
Mark Mentovai 14138936b5 test: Compare ProcessInfo::Arguments() to main()’s argc/argv on POSIX
Previously on macOS, the test used an OS-specific library function to
recover the original argc and argv. On Linux/Android, it essentially
reimplemented the very code it was testing, which didn’t make for a very
good test. The new approach is to save argc and argv in main() and base
the comparison on that.

Bug: crashpad:30
Test: crashpad_util_test ProcessInfo.*, crashpad_test_test MainArguments.*
Change-Id: I578abed3b04ae10a22f79a193bbb8b6589276c97
Reviewed-on: https://chromium-review.googlesource.com/456798
Commit-Queue: Mark Mentovai <mark@chromium.org>
Reviewed-by: Joshua Peraza <jperaza@chromium.org>
2017-03-20 17:05:30 +00:00

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// Copyright 2017 The Crashpad Authors. All rights reserved.
//
// 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 CRASHPAD_TEST_MAIN_ARGUMENTS_H_
#define CRASHPAD_TEST_MAIN_ARGUMENTS_H_
#include <string>
#include <vector>
namespace crashpad {
namespace test {
//! \brief Saves the arguments to `main()` for later use.
//!
//! Call this function from a test programs `main()` function so that tests
//! that require access to these variables can retrieve them from
//! GetMainArguments().
//!
//! The contents of \a argv, limited to \a argc elements, will be copied, so
//! that subsequent modifications to these variables by `main()` will not affect
//! the state returned by GetMainArguments().
//!
//! This function must be called exactly once during the lifetime of a test
//! program.
void InitializeMainArguments(int argc, char* argv[]);
//! \brief Retrieves pointers to the arguments to `main()`.
//!
//! Tests that need to access the original values of a test programs `main()`
//! functions parameters at process creation can use this function to retrieve
//! them, provided that `main()` called InitializeMainArguments() before making
//! any changes to its arguments.
const std::vector<std::string>& GetMainArguments();
} // namespace test
} // namespace crashpad
#endif // CRASHPAD_TEST_MAIN_ARGUMENTS_H_