Why??

<?php

class Counter
{
    public function testTick()
    {
        $counter = new Counter();
        $count = $counter->tick();
        $this->assertEquals($count, 1);
    }
}

<?php

class Counter
{
    public function shouldIncrementCounterByOneByDefault()
    {
        $counter = new Counter();
        
        $expectedCount = $counter->current() + 1;
        $this->checkThat($expectedCount, equalTo($counter->tick()));
    }
    
    public function shouldIncrementCounterByDefinedStep()
    {
        $step = 2;
        $counter = new Counter($step);
        
        $expectedCount = $counter->current() + $step;
        $this->checkThat($expectedCount, equalTo($counter->tick()));
    }
}

class GameTest extends UnitTest
{
    public function testGamePlayerWins()
    {
        $deck = m::mock(Deck::class);
        $deck->shouldReceive('draw')->once()->andReturn([new Card(10), new Card(7), 
            new Card(9), new Card(8), new Card(2)]);
        
        $dealerHand = m::mock(Hand::class);
        $playerHand = m::mock(Hand::class);
        
        $player = m::mock(Player::class);
        $dealer = m::mock(Dealer::class);
        
        $dealerHand->shouldReceive('addCards')->once()->with([new Card(10), new Card(7)]);
        $playerHand->shouldReceive('addCards')->once()->with([new Card(9), new Card(8)]);
        $playerHand->shouldReceive('addCards')->once()->with([new Card(2)]);
        
        $player->shouldReceive('setHand')->once()->with($playerHand);
        $dealer->shouldReceive('setHand')->once()->with($dealerHand);
        
        $game = new Game($dealerHand, $playerHand);
        $game->start();
        $game->hit($dealer, $deck, 2);
        $game->hit($player, $deck, 3);
        
        $this->assertSame($game->getWinner(), $player);
    }
}

class GameTest extends UnitTest
{
    public function shouldStartGame....????()
    {
        
    }

    public function shouldDetermineWinner...????()
    {

    }
}

namespace Unit\Blackjack;

/**
 * @method Game uut()
 *
 * @property Dealer|m\MockInterface dealer
 * @property Player|m\MockInterface player
 */
class GameTest extends UnitTest
{
    protected $uut;

    protected function setUp()
    {
        $this->dealer = m::spy(Dealer::class);
        $this->player = m::spy(Player::class);

        parent::setUp();
    }

    protected function createUnitUnderTest()
    {
        $game = new Game();
        $game->setDealer($this->dealer);
        $game->setPlayer($this->player);

        return $game;
    }

<?php

namespace Unit\Blackjack;

class GameTest extends UnitTest
{
    public function testTellsIfDealerWon()
    {
        $this->uut()->dealerWins();
        $this->verifyThat($this->uut()->hasDealerWon(), is(true));
        $this->verifyThat($this->uut()->hasPlayerWon(), is(false));
    }

    public function testTellsIfGameIsADraw()
    {
        $this->uut()->setIsDraw();
        $this->verifyThat($this->uut()->isDraw(), is(true));
    }

    public function testTellsIfPlayerWon()
    {
        $this->uut()->playerWins();
        $this->verifyThat($this->uut()->hasPlayerWon(), is(true));
        $this->verifyThat($this->uut()->hasDealerWon(), is(false));
    }
}

<?php
$I = new AcceptanceTester($scenario);
$I->wantTo('sign in');
$I->amOnPage('/login');
$I->fillField('username', 'Steven');
$I->fillField('password', 'qwerty');
$I->click('LOGIN');
$I->see('Welcome, Steven!');
?>

@navigation
Feature:
  As a user
  I should be able to navigate the different pages of this site

  @homepage
  Scenario: Navigate the homepage
    Given I am on the homepage
    Then I take a screenshot or save last response named "homepage"

  @section
  Scenario: Navigate to a section page
    Given I visited the "Homepage"
    When I navigate to the "Section 1" section within the menu
    Then I should see a top stories widget
    And I should see a 2x2 layout widget
    And I should see a slideshow widget
    And I should see a multi layout widget
    And I should see a videos widget
    Then I take a screenshot or save last response named "section"

class ConfigDeploymentCommandCest extends DeploymentCommandCest
{
    const COMMAND_TO_RUN = 'ez:legacy:desktop-apps:config';

    /**
     * @param FunctionalTester $tester
     */
    public function seeTheModifiedConfigFileWithNewValues(FunctionalTester $tester)
    {
        $this->deleteTestFile($tester, DataConfiguration::scannerAppConfigOutput());

        $optionName = DesktopAppsDeploymentCommand::SCANNER_APP_OPTION_NAME;

        $tester->runCommand(static::COMMAND_TO_RUN, array('--' . $optionName => null));
        $tester->seeCommandOutput(sprintf(
            DesktopAppsDeploymentCommand::MESSAGE_DEPLOYMENT_SUCCESSFUL, 
            $optionName
        ));
        $tester->dontSeeAnException();
        $this->checkThatFileWasChanged(
            $tester, 
            DataConfiguration::scannerAppConfigInput(), 
            DataConfiguration::scannerAppConfigOutput()
        );
    }
}

@functional @blackjack
Feature:
  As a player
  I should be able to play a game of Blackjack through the Symfony2 CLI

  Background:
    Given I trick the deck
    And I register the Blackjack command

  Scenario: Dealer wins by outscoring player
    Given the deck returns the following cards in a FILO order:
      #dealer cards
      |  6 |
      |  6 |

      #player cards
      |  5 |
      |  5 |

      |  5 |

    And I call "stand" when asked for my move
    When I run the blackjack game command
    Then the player score should be "10"
    And the dealer score should be "17"
    And the dealer should have won

class BlackJackGameTest extends ComponentTest
{   
    public function testDealerLosesIfHeBusts()
    {
        $this->initialDealerCards(new Card(10), new Card(3));
        $this->initialPlayerCards(new Card(10), new Card(8));
        $this->nextPlayerCards([new Card(3)]);
        $this->nextDealerCards([new Card(9)]);

        $this->playerWillHitTimes(1);
        $game = $this->playEntireGame();

        $this->verifyThat($game->getDealer()->hasBusted(), is(true));
        $this->verifyThat($game->hasPlayerWon(), is(true));
    }

    public function testDealerShouldTryToStopAt17()
    {
        $this->initialDealerCards(new Card(10), new Card(3));
        $this->initialPlayerCards(new Card(10), new Card(8));
        $this->nextDealerCards([new Card(4), new Card(10)]);

        $game = $this->playEntireGame();

        $this->verifyThat($game->getDealer()->getBestScore(), is(equalTo(17)));
        $this->verifyThat($game->hasPlayerWon(), is(true));
    }

    //...
}

class BlackJackGameTest extends ComponentTest
{   
    public function testGameDrawWhenBothPlayersHaveABlackjack()
    {
        $this->nextCardsFormABlackjack();
        $this->nextCardsFormABlackjack();

        $game = $this->coordinateGame();
        $this->verifyThat($game->isDraw(), is(true));
    }

    public function testPlayerWillUseBestScoreInOrderToWin()
    {
        $this->initialDealerCards(new Card(10), new Card(8));
        $this->initialDealerCards(new Card(5), new Card(Card::RANK_ACE));
        $this->nextDealerCards([new Card(3)]);

        $this->playerWillHitTimes(1);
        $game = $this->playEntireGame();

        $this->verifyThat($game->hasPlayerWon(), is(true));
    }
}

<?php

namespace Unit\Blackjack;

/**
 * @method Dealer uut()
 *
 * @property Deck|m\MockInterface deck
 * @property Player|m\MockInterface player
 */
class DealerTest extends PlayerTest
{
    protected function setUp()
    {
        $this->player = m::mock(Player::class);

        $this->deck = m::mock(Deck::class);
        $this->deck->shouldReceive('draw')->andReturn(new Card())->byDefault();

        parent::setUp();
    }

    protected function createUnitUnderTest()
    {
        return new Dealer($this->deck);
    }  
}

class DealerTest extends PlayerTest
{
    public function testCanGiveCardsToPlayer()
    {
        $player = m::mock(Player::class);
        $player->shouldReceive('receiveCard')
            ->times(2)
            ->with(anInstanceOf(Card::class));

        $this->uut()->hit($player, 2);
    }

    public function testDealerCannotDrawIfHeHasMoreThanSixteen()
    {
        $handCalculator = new HandCalculator();

        $this->deck->shouldReceive('draw')->andReturn(new Card(1));
        $this->uut()->receiveCards([
            new Card(10),
            new Card(6),
        ]);
        $this->uut()->calculateHand($handCalculator);

        $this->player->shouldReceive('getBestScore')->andReturn(18);

        $this->uut()->play($handCalculator);
        $this->verifyThat($this->uut()->getBestScore(), equalTo(17));
    }

    //todo: dealer can hit on a soft 17? Maybe add it as an optional rule (Rulebook object?)
}

/**
 * @author Steven Rosato <steven.rosato@majisti.com>
 * @group mail
 */
class MailSendingTest extends IntegrationTest
{
    /**
     * @test
     * @group mail.messageCount
     */
    public function itShouldSendAContactEmailToUserAndAdmin()
    {
        $this->fireMailer();
        $collector = $this->getCollector();

        $this->checkThat($collector, is(notNullValue()));
        $this->checkThat($collector->getMessageCount(), is(equalTo(2)));
    }

    /**
     * @return MessageDataCollector
     */
    private function getCollector()
    {
        return $this->getClient()->getProfile()->getCollector('swiftmailer');
    }
}

class Card
{
    public static function createRandom(): Card
    {
        $types = self::SUITS;

        $randomType = $types[rand(0, count($types) - 1)];
        $randomValue = rand(1, static::CARDS_PER_TYPE_COUNT);

        return new static($randomValue, $randomType);
    }
}

class CardTest extends UnitTest    
{    
    public function testCanCreateRandomCard()
    {
        $phpRandFunction = Test::func($this->getUutNamespace(), 
            'rand', Card::RANK_ACE);

        $card = $this->uut()->createRandom();
        $this->verifyThat($card, is(anInstanceOf(Card::class)));
        $this->verifyThat($card->getRank(), is(equalTo(Card::RANK_ACE)));

        $phpRandFunction->verifyInvoked([Card::RANK_ACE]);
    }
}