chromium/third_party/catapult/tracing/tracing/value/histogram_unittest.cc

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "tracing/tracing/value/histogram.h"

#include <cmath>
#include <sstream>

#include "testing/gtest/include/gtest/gtest.h"
#include "tracing/tracing/proto/histogram.pb.h"

namespace catapult {

namespace proto = tracing::tracing::proto;

proto::UnitAndDirection UnitWhatever() { … }

TEST(…) {
  HistogramBuilder builder("my name", UnitWhatever());

  auto histogram = builder.toProto();

  EXPECT_EQ(…);
}

TEST(…) {
  proto::UnitAndDirection unit;
  unit.set_unit(proto::TS_MS);
  unit.set_improvement_direction(proto::BIGGER_IS_BETTER);
  HistogramBuilder builder("", unit);

  auto histogram = builder.toProto();

  EXPECT_EQ(…);
  EXPECT_EQ(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  builder.set_description("desc!");

  auto histogram = builder.toProto();

  EXPECT_EQ(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  proto::Diagnostic diag1;
  proto::GenericSet* set1 = diag1.mutable_generic_set();
  set1->add_values("1234");
  set1->add_values("\"a JSON encoded string\"");
  builder.AddDiagnostic("diag1", diag1);

  proto::Diagnostic diag2;
  proto::GenericSet* set2 = diag2.mutable_generic_set();
  set2->add_values("{}");
  builder.AddDiagnostic("diag2", diag2);

  auto histogram = builder.toProto();

  auto map = histogram->diagnostics().diagnostic_map();
  EXPECT_EQ(…);

  EXPECT_TRUE(…);
  const proto::GenericSet& actual_set1 = map["diag1"].generic_set();
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);

  EXPECT_TRUE(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  builder.AddSample(1.0);
  builder.AddSample(2.0);
  builder.AddSample(3.0);
  builder.AddSample(4.0);

  auto histogram = builder.toProto();

  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  for (int i = 0; i < 100; ++i) {
    builder.AddSample(i);
  }

  auto histogram = builder.toProto();

  EXPECT_EQ(…)
      << "Did not expect num samples to grow beyond 10, which is the default "
      << "max number of samples";

  // Values will get randomly thrown away, but do some spot checks that they
  // at least are in range.
  ASSERT_LE(…);
  ASSERT_GE(…);
  ASSERT_LE(…);
  ASSERT_GE(…);
  ASSERT_LE(…);
  ASSERT_GE(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  builder.AddSample(10.0);
  builder.AddSample(20.0);
  builder.AddSample(30.0);
  builder.AddSample(40.0);

  auto histogram = builder.toProto();

  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_FLOAT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_FLOAT_EQ(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  builder.AddSample(20.0);
  builder.AddSample(-1.0);

  auto histogram = builder.toProto();

  ASSERT_EQ(…);
}

TEST(…) {
  HistogramBuilder builder("", UnitWhatever());

  proto::SummaryOptions options;
  options.set_count(false);
  options.set_avg(true);
  builder.SetSummaryOptions(options);

  auto histogram = builder.toProto();

  ASSERT_EQ(…);
  ASSERT_EQ(…);
  ASSERT_EQ(…);
}

TEST(…) {
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
  EXPECT_EQ(…);
}

TEST(…) {
  EXPECT_EQ(…);
}

TEST(…) {
  EXPECT_EQ(…);
  EXPECT_EQ(…);
}

}  // namespace catapult