Added a test and cleaned up some other tests a bit

tests/APCuTest.php

@@ -12,4 +12,9 @@ public function setUp()
     {
         $this->stash = new Stash\Drivers\APCu();
     }
+
+    public function tearDown()
+    {
+        $this->stash->flush();
+    }
 }

tests/FileTest.php

@@ -6,16 +6,31 @@ class FileTest extends PHPUnit_Framework_TestCase
 {
     use Cacheable;
 
+    protected $dirPath;
     protected $stash;
 
     public function setUp()
     {
-        $this->stash = new Stash\Drivers\File(__DIR__ . '/cache');
+        $this->dirPath = __DIR__ . '/cache';
+        $this->stash = new Stash\Drivers\File($this->dirPath);
+    }
+
+    public function tearDown()
+    {
+        $this->stash->flush();
     }
 
     public function test_it_returns_false_for_an_expired_item()
     {
         $this->stash->put('expired', 'qwerty', -5);
+
         $this->assertFalse($this->stash->get('expired'));
     }
+
+    public function test_it_creates_a_cache_file_with_a_php_extension()
+    {
+        $this->stash->put('extension-test', 'asdf', 5);
+
+        $this->assertTrue(file_exists("{$this->dirPath}/27ab9a58aa0a5ed06a7935b9a8a8b1edf2d2ba70.cache.php"));
+    }
 }

tests/ItemTest.php

@@ -11,22 +11,44 @@ public function setUp()
         $this->item = new Stash\Item('Test data');
     }
 
-    public function test_it_has_data()
+    public function test_it_can_contain_a_string()
     {
         $item = new Stash\Item('Some string');
+
         $this->assertEquals('Some string', $item->data);
+    }
 
+    public function test_it_can_contain_an_integer()
+    {
         $item = new Stash\Item(1337);
+
         $this->assertEquals(1337, $item->data);
+    }
 
+    public function test_it_can_contain_an_array()
+    {
         $item = new Stash\Item(['alice', 1337, false]);
+
         $this->assertEquals(['alice', 1337, false], $item->data);
+    }
+
+    public function test_it_can_contain_booleans()
+    {
+        $trueItem = new Stash\Item(true);
+        $falseItem = new Stash\Item(false);
+
+        $this->assertTrue($trueItem->data);
+        $this->assertFalse($falseItem->data);
+    }
+
+    public function test_it_can_contain_an_object()
+    {
+        $class = new stdClass;
+        $class->boolean = true;
 
-        $item = new Stash\Item(true);
-        $this->assertTrue($item->data);
+        $item = new Stash\Item($class);
 
-        $item = new Stash\Item(false);
-        $this->assertFalse($item->data);
+        $this->assertTrue($item->data->boolean);
     }
 
     public function test_it_has_an_expiration()

tests/MemcachedTest.php

@@ -15,9 +15,15 @@ public function setUp()
         ]);
     }
 
+    public function tearDown()
+    {
+        $this->stash->flush();
+    }
+
     public function test_it_returns_false_for_an_expired_item()
     {
         $this->stash->put('expired', 'qwerty', -5);
+
         $this->assertFalse($this->stash->get('expired'));
     }
 }