聖佑愛吃蛋

BadEgg.php

<?php

class BadEgg implements Egg
{
    public function eaten()
    {
        return 'Unsatisfy';
    }
}

Egg.php

<?php

interface Egg
{
    public function eaten();
}

Shengyoufan.php

<?php

class Shengyoufan
{
    public $stomach = [];

    public function eat(Egg $egg)
    {
        $this->stomach[] = $egg->eaten();

        return $this;
    }

    public function use(Toilet $toilet)
    {
        foreach ($this->stomach as $index => $feeling) {
            if ($feeling === 'Unsatisfy') {
                $toilet->occupy();
                unset($this->stomach[$index]);
            }
        }

        return $this;
    }

    public function feeling()
    {
        return count(array_filter($this->stomach, function ($feeling) {
            return $feeling === 'Unsatisfy';
        })) > 0 ? 'bad' : 'good';
    }
}

ShengyoufanTest.php

<?php

use Mockery as m;
use PHPUnit\Framework\TestCase;
use Mockery\Adapter\Phpunit\MockeryPHPUnitIntegration;

class ShengyoufanTest extends TestCase
{
    use MockeryPHPUnitIntegration;

    public function test_shengyoufan_eat_tea_egg_then_feel_satisfy()
    {
        $egg = m::mock(new TeaEgg());
        $egg->shouldReceive('eaten')->times(10)->passthru();

        $shengyoufan = new Shengyoufan();

        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);

        $counts = array_count_values($shengyoufan->stomach);

        $this->assertEquals(10, $counts['Satisfy']);
        $this->assertSame('good', $shengyoufan->feeling());

        return $shengyoufan;
    }

    /**
     * @depends test_shengyoufan_eat_tea_egg_then_feel_satisfy
     */
    public function test_shengyoufan_should_not_occupy_toile(Shengyoufan $shengyoufan)
    {
        $toilet = m::mock(new Toilet());
        $toilet->shouldReceive('occupy')->times(0)->passthru();

        $shengyoufan->use($toilet);
        $this->assertSame('good', $shengyoufan->feeling());
    }

    public function test_shengyoufan_eat_bad_egg_then_feel_unsatisfy()
    {
        $egg = m::mock(new BadEgg());
        $egg->shouldReceive('eaten')->times(10)->passthru();

        $shengyoufan = new Shengyoufan();

        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);
        $shengyoufan->eat($egg);

        $counts = array_count_values($shengyoufan->stomach);

        $this->assertEquals(10, $counts['Unsatisfy']);
        $this->assertSame('bad', $shengyoufan->feeling());

        return $shengyoufan;
    }

    /**
     * @depends test_shengyoufan_eat_bad_egg_then_feel_unsatisfy
     */
    public function test_shengyoufan_occupy_toilet(Shengyoufan $shengyoufan)
    {
        $toilet = m::mock(new Toilet());
        $toilet->shouldReceive('occupy')->times(10)->passthru();

        $shengyoufan->use($toilet);
        $this->assertSame('good', $shengyoufan->feeling());
    }

    public function test_shengyoufan_eat_egg_then_feel_satisfy_or_not()
    {
        $teaEgg = m::mock(new TeaEgg());
        $teaEgg->shouldReceive('eaten')->times(5)->passthru();

        $badEgg = m::mock(new BadEgg());
        $badEgg->shouldReceive('eaten')->times(5)->passthru();

        $shengyoufan = new Shengyoufan();

        $shengyoufan->eat($teaEgg);
        $shengyoufan->eat($teaEgg);
        $shengyoufan->eat($teaEgg);
        $shengyoufan->eat($teaEgg);
        $shengyoufan->eat($teaEgg);

        $shengyoufan->eat($badEgg);
        $shengyoufan->eat($badEgg);
        $shengyoufan->eat($badEgg);
        $shengyoufan->eat($badEgg);
        $shengyoufan->eat($badEgg);

        $counts = array_count_values($shengyoufan->stomach);

        $this->assertEquals(5, $counts['Satisfy']);
        $this->assertEquals(5, $counts['Unsatisfy']);
        $this->assertSame('bad', $shengyoufan->feeling());

        return $shengyoufan;
    }

    /**
     * @depends test_shengyoufan_eat_egg_then_feel_satisfy_or_not
     */
    public function test_shengyoufan_should_occupy_toilet_when_stomach_has_bad_eggs(Shengyoufan $shengyoufan)
    {
        $toilet = m::mock(new Toilet());
        $toilet->shouldReceive('occupy')->times(5)->passthru();

        $shengyoufan->use($toilet);
        $this->assertSame('good', $shengyoufan->feeling());
    }
}

TeaEgg.php

<?php

class TeaEgg implements Egg
{
    public function eaten()
    {
        return 'Satisfy';
    }
}

Toilet.php

<?php

class Toilet
{
    public function occupy()
    {
    }
}