webrtc/test/explicit_key_value_config.cc
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

56 lines
2 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.
*/
#include "test/explicit_key_value_config.h"
#include "absl/strings/string_view.h"
#include "rtc_base/checks.h"
namespace webrtc {
namespace test {
ExplicitKeyValueConfig::ExplicitKeyValueConfig(absl::string_view s) {
std::string::size_type field_start = 0;
while (field_start < s.size()) {
std::string::size_type separator_pos = s.find('/', field_start);
RTC_CHECK_NE(separator_pos, std::string::npos)
<< "Missing separator '/' after field trial key.";
RTC_CHECK_GT(separator_pos, field_start)
<< "Field trial key cannot be empty.";
std::string key(s.substr(field_start, separator_pos - field_start));
field_start = separator_pos + 1;
RTC_CHECK_LT(field_start, s.size())
<< "Missing value after field trial key. String ended.";
separator_pos = s.find('/', field_start);
RTC_CHECK_NE(separator_pos, std::string::npos)
<< "Missing terminating '/' in field trial string.";
RTC_CHECK_GT(separator_pos, field_start)
<< "Field trial value cannot be empty.";
std::string value(s.substr(field_start, separator_pos - field_start));
field_start = separator_pos + 1;
key_value_map_[key] = value;
}
// This check is technically redundant due to earlier checks.
// We nevertheless keep the check to make it clear that the entire
// string has been processed, and without indexing past the end.
RTC_CHECK_EQ(field_start, s.size());
}
std::string ExplicitKeyValueConfig::GetValue(absl::string_view key) const {
auto it = key_value_map_.find(key);
if (it != key_value_map_.end())
return it->second;
return "";
}
} // namespace test
} // namespace webrtc