<!DOCTYPE html>
<!--
Copyright 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/base/units/units.html">
<link rel="import" href="/tracing/base/units/time_stamp.html">

<script>
'use strict';

tr.b.unittest.testSuite(function() {
  var Units = tr.b.u.Units;
  var TimeStamp = tr.b.u.TimeStamp;

  function checkFormat(timestamp, expectedString) {
    assert.equal(TimeStamp.format(timestamp), expectedString);
    assert.equal(new TimeStamp(timestamp).toString(), expectedString);
  }

  test('format', function() {
    try {
      // Use milliseconds to display time (default behavior).
      Units.currentTimeDisplayMode = tr.b.u.TimeDisplayModes.ms;

      checkFormat(0, '0.000 ms');
      checkFormat(0.02, '0.020 ms');
      checkFormat(0.001, '0.001 ms');
      checkFormat(0.0005, '0.001 ms');
      checkFormat(0.00049, '0.000 ms');
      checkFormat(999.999, '999.999 ms');
      checkFormat(1000.001, '1,000.001 ms');
      checkFormat(123456789, '123,456,789.000 ms');
      checkFormat(-0.00051, '-0.001 ms');
      checkFormat(-123456789, '-123,456,789.000 ms');

      // Change the unit to nanoseconds.
      Units.currentTimeDisplayMode = tr.b.u.TimeDisplayModes.ns;

      checkFormat(0, '0 ns');
      checkFormat(1, '1,000,000 ns');
      checkFormat(0.000042, '42 ns');
      checkFormat(0.000001, '1 ns');
      checkFormat(0.0000005, '1 ns');
      checkFormat(0.00000049, '0 ns');
      checkFormat(123.456, '123,456,000 ns');
      checkFormat(-0.07, '-70,000 ns');
    } finally {
      Units.reset();
    }
  });
});
</script>