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55251c3d49
This is similar to the field trial parser but it uses a normal struct with normal fields as underlying storage. This makes it easier to understand and use as only the encoding and parsing uses non- standard constructs. Additionally, it makes it easier to use the struct as a regular config struct when the values are not set using field trials. Bug: webrtc:9883 Change-Id: I5b16c2a71875b6f478383decff18fbaa62bc404a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/145203 Reviewed-by: Jonas Olsson <jonasolsson@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28810}
84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/experiments/struct_parameters_parser.h"
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#include "rtc_base/gunit.h"
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namespace webrtc {
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namespace {
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struct DummyConfig {
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bool enabled = false;
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double factor = 0.5;
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int retries = 5;
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bool ping = 0;
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std::string hash = "a80";
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absl::optional<TimeDelta> duration;
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absl::optional<TimeDelta> latency = TimeDelta::ms(100);
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static StructParametersParser<DummyConfig>* Parser();
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};
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StructParametersParser<DummyConfig>* DummyConfig::Parser() {
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using C = DummyConfig;
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// The empty comments ensures that each pair is on a separate line.
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static auto parser = CreateStructParametersParser(
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"e", [](C* c) { return &c->enabled; }, //
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"f", [](C* c) { return &c->factor; }, //
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"r", [](C* c) { return &c->retries; }, //
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"p", [](C* c) { return &c->ping; }, //
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"h", [](C* c) { return &c->hash; }, //
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"d", [](C* c) { return &c->duration; }, //
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"l", [](C* c) { return &c->latency; }); //
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return parser.get();
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}
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} // namespace
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TEST(StructParametersParserTest, ParsesValidParameters) {
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DummyConfig exp =
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DummyConfig::Parser()->Parse("e:1,f:-1.7,r:2,p:1,h:x7c,d:8,l:,");
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EXPECT_TRUE(exp.enabled);
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EXPECT_EQ(exp.factor, -1.7);
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EXPECT_EQ(exp.retries, 2);
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EXPECT_EQ(exp.ping, true);
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EXPECT_EQ(exp.duration.value().ms(), 8);
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EXPECT_FALSE(exp.latency);
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}
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TEST(StructParametersParserTest, UsesDefaults) {
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DummyConfig exp = DummyConfig::Parser()->Parse("");
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EXPECT_FALSE(exp.enabled);
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EXPECT_EQ(exp.factor, 0.5);
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EXPECT_EQ(exp.retries, 5);
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EXPECT_EQ(exp.ping, false);
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EXPECT_EQ(exp.hash, "a80");
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}
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TEST(StructParametersParserTest, EmptyDefaults) {
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DummyConfig exp;
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auto encoded = DummyConfig::Parser()->EncodeChanged(exp);
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// Unchanged parameters are not encoded.
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EXPECT_EQ(encoded, "");
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}
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TEST(StructParametersParserTest, EncodeAll) {
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DummyConfig exp;
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auto encoded = DummyConfig::Parser()->EncodeAll(exp);
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// All parameters are encoded.
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EXPECT_EQ(encoded, "d:,e:false,f:0.5,h:a80,l:100 ms,p:false,r:5");
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}
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TEST(StructParametersParserTest, EncodeChanged) {
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DummyConfig exp;
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exp.ping = true;
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exp.retries = 4;
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auto encoded = DummyConfig::Parser()->EncodeChanged(exp);
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// We expect the changed parameters to be encoded in alphabetical order.
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EXPECT_EQ(encoded, "p:true,r:4");
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}
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} // namespace webrtc
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