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First TwoPlayerTrueSkillCalculator unit test passed

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Jeff Moser
2010-08-28 22:05:41 -04:00
commit 12a02b8403
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UnitTests/TrueSkill/TrueSkillCalculatorTests.php Normal file
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<?php
require_once(dirname(__FILE__) . "/../../PHPSkills/GameInfo.php");
require_once(dirname(__FILE__) . "/../../PHPSkills/Player.php");
require_once(dirname(__FILE__) . "/../../PHPSkills/Team.php");
require_once(dirname(__FILE__) . "/../../PHPSkills/Teams.php");
require_once(dirname(__FILE__) . "/../../PHPSkills/SkillCalculator.php");
use Moserware\Skills\GameInfo;
use Moserware\Skills\Player;
use Moserware\Skills\Team;
use Moserware\Skills\Teams;
use Moserware\Skills\SkillCalculator;
class TrueSkillCalculatorTests
{
const ERROR_TOLERANCE_TRUESKILL = 0.085;
const ERROR_TOLERANCE_MATCH_QUALITY = 0.0005;
// These are the roll-up ones
public static function testAllTwoPlayerScenarios($testClass, SkillCalculator $calculator)
{
self::twoPlayerTestNotDrawn($testClass, $calculator);
//self::twoPlayerTestDrawn($testClass, $calculator);
//self::oneOnOneMassiveUpsetDrawTest($testClass, $calculator);
//self::twoPlayerChessTestNotDrawn($testClass, $calculator);
}
//------------------- Actual Tests ---------------------------
// If you see more than 3 digits of precision in the decimal point, then the expected values calculated from
// F# RalfH's implementation with the same input. It didn't support teams, so team values all came from the
// online calculator at http://atom.research.microsoft.com/trueskill/rankcalculator.aspx
//
// All match quality expected values came from the online calculator
// In both cases, there may be some discrepancy after the first decimal point. I think this is due to my implementation
// using slightly higher precision in GaussianDistribution.
//------------------------------------------------------------------------------
// Two Player Tests
//------------------------------------------------------------------------------
private static function twoPlayerTestNotDrawn($testClass, SkillCalculator $calculator)
{
$player1 = new Player(1);
$player2 = new Player(2);
$gameInfo = new GameInfo();
$team1 = new Team($player1, $gameInfo->getDefaultRating());
$team2 = new Team($player2, $gameInfo->getDefaultRating());;
$teams = Teams::concat($team1, $team2);
$newRatings = $calculator->calculateNewRatings($gameInfo, $teams, array(1, 2));
$player1NewRating = $newRatings->getRating($player1);
self::assertRating($testClass, 29.39583201999924, 7.171475587326186, $player1NewRating);
$player2NewRating = $newRatings->getRating($player2);
self::assertRating($testClass, 20.60416798000076, 7.171475587326186, $player2NewRating);
self::assertMatchQuality($testClass, 0.447, $calculator->calculateMatchQuality($gameInfo, $teams));
}
private static function assertRating($testClass, $expectedMean, $expectedStandardDeviation, $actual)
{
$testClass->assertEquals($expectedMean, $actual->getMean(), '', self::ERROR_TOLERANCE_TRUESKILL);
$testClass->assertEquals($expectedStandardDeviation, $actual->getStandardDeviation(), '', self::ERROR_TOLERANCE_TRUESKILL);
}
private static function assertMatchQuality($testClass, $expectedMatchQuality, $actualMatchQuality)
{
$testClass->assertEquals($expectedMatchQuality, $actualMatchQuality, '', self::ERROR_TOLERANCE_MATCH_QUALITY);
}
}
?>