<!DOCTYPE html>
<!--
Copyright (c) 2015 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.
-->

<link rel="import" href="/tracing/core/test_utils.html">
<link rel="import"
    href="/tracing/metrics/system_health/hazard_metric.html">
<link rel="import" href="/tracing/value/value_set.html">

<script>
'use strict';

tr.b.unittest.testSuite(function() {
  function computeHazardValue(customizeModelCallback) {
    var model = tr.c.TestUtils.newModel(function(model) {
      model.rendererProcess = model.getOrCreateProcess(2);
      model.rendererMain = model.rendererProcess.getOrCreateThread(3);
      model.rendererMain.name = 'CrRendererMain';

      customizeModelCallback(model);
    });
    var values = new tr.v.ValueSet();
    tr.metrics.sh.hazardMetric(values, model);
    return tr.b.getOnlyElement(values);
  }

  test('minimalHazard', function() {
    var duration = 50 + 1e-4;
    var value = computeHazardValue(function(model) {
      model.rendererMain.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
        type: tr.model.ThreadSlice,
        isTopLevel: true,
        start: 0,
        duration: duration
      }));
    });
    assert.notEqual(0, value.average);
    assert.closeTo(value.average, 0.1611, 1e-5);
  });

  test('maximalHazard', function() {
    var value = computeHazardValue(function(model) {
      model.rendererMain.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
        type: tr.model.ThreadSlice,
        isTopLevel: true,
        start: 0,
        duration: 2200
      }));
    });
    assert.closeTo(value.average, 1, 1e-5);
  });

  test('blendedHazards', function() {
    var value = computeHazardValue(function(model) {
      model.rendererMain.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
        type: tr.model.ThreadSlice,
        isTopLevel: true,
        start: 0,
        duration: 100
      }));
      model.rendererMain.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
        type: tr.model.ThreadSlice,
        isTopLevel: true,
        start: 0,
        duration: 200
      }));
      model.rendererMain.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
        type: tr.model.ThreadSlice,
        isTopLevel: true,
        start: 0,
        duration: 300
      }));
      model.rendererMain.sliceGroup.pushSlice(tr.c.TestUtils.newSliceEx({
        type: tr.model.ThreadSlice,
        isTopLevel: true,
        start: 0,
        duration: 400
      }));
    });
    assert.closeTo(0.92144, value.average, 1e-4);
  });
});
</script>