webrtc/test/scoped_key_value_config.h
Emil Lundmark 1c8103d4db Add FieldTrialsRegistry that verifies looked up field trials
This new class implements the existing FieldTrialsView interface,
extending it with the verification functionality. For now, the
verification will only be performed if the rtc_strict_field_trials GN
arg is set.

Most classes extending FieldTrialsView today have been converted to
extend from FieldTrialsRegistry instead to automatically perform
verification.

Bug: webrtc:14154
Change-Id: I4819724cd66a04507e62fcc2bb1019187b6ba8c7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/276270
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Emil Lundmark <lndmrk@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#38453}
2022-10-24 09:12:30 +00:00

54 lines
1.7 KiB
C++

/*
* Copyright (c) 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef TEST_SCOPED_KEY_VALUE_CONFIG_H_
#define TEST_SCOPED_KEY_VALUE_CONFIG_H_
#include <functional>
#include <map>
#include <memory>
#include <string>
#include "absl/strings/string_view.h"
#include "api/field_trials_registry.h"
#include "test/field_trial.h"
namespace webrtc {
namespace test {
class ScopedKeyValueConfig : public FieldTrialsRegistry {
public:
virtual ~ScopedKeyValueConfig();
ScopedKeyValueConfig();
explicit ScopedKeyValueConfig(absl::string_view s);
ScopedKeyValueConfig(ScopedKeyValueConfig& parent, absl::string_view s);
private:
ScopedKeyValueConfig(ScopedKeyValueConfig* parent, absl::string_view s);
ScopedKeyValueConfig* GetRoot(ScopedKeyValueConfig* n);
std::string GetValue(absl::string_view key) const override;
std::string LookupRecurse(absl::string_view key) const;
ScopedKeyValueConfig* const parent_;
// The leaf in a list of stacked ScopedKeyValueConfig.
// Only set on root (e.g with parent_ == nullptr).
const ScopedKeyValueConfig* leaf_;
// Unlike std::less<std::string>, std::less<> is transparent and allows
// heterogeneous lookup directly with absl::string_view.
std::map<std::string, std::string, std::less<>> key_value_map_;
std::unique_ptr<ScopedFieldTrials> scoped_field_trials_;
};
} // namespace test
} // namespace webrtc
#endif // TEST_SCOPED_KEY_VALUE_CONFIG_H_