Merge branch 'feature/service-manager-provides' into develop

lib/Proem/Api/Service/Asset/Generic.php

@@ -58,6 +58,27 @@ class Generic
      */
     private $asset;
 
+    /**
+     * Store a flag indicating what object this Asset provides.
+     *
+     * @var string $provides
+     */
+    private $provides;
+
+    /**
+     * Get or Set a flag indicating what object this Asset provides.
+     *
+     */
+    public function provides($provides = null)
+    {
+        if ($provides !== null) {
+            $this->provides = $provides;
+            return $this;
+        }
+
+        return $this->provides;
+    }
+
     /**
      * Set a parameters by named index
      *
@@ -71,7 +92,7 @@ public function setParam($index, $value)
     }
 
     /**
-     * A maigic method shortcut that proxies setParam()
+     * A magic method shortcut that proxies setParam()
      *
      * @param string $index
      * @param mixed $value
@@ -102,7 +123,7 @@ public function getParam($index)
     }
 
     /**
-     * A maigic method shortcut that proxies getParam()
+     * A magic method shortcut that proxies getParam()
      *
      * @param string $index
      */

lib/Proem/Api/Service/Manager.php

@@ -54,6 +54,12 @@ class Manager
      */
     private $assets = [];
 
+    /**
+     * Store an array containing information about what
+     * Assets this manager provides
+     */
+    private $provides = [];
+
     /**
      * Store an Asset container by named index.
      *
@@ -63,6 +69,9 @@ class Manager
     public function set($index, Asset $asset)
     {
         $this->assets[$index] = $asset;
+        if ($provides = $asset->provides()) {
+            $this->provides[] = $provides;
+        }
         return $this;
     }
 
@@ -96,4 +105,28 @@ public function has($index)
         return isset($this->assets[$index]);
     }
 
+    /**
+     * Retrieve a "provides" flag
+     *
+     * @param string $provides
+     */
+    public function provides($provides)
+    {
+        return in_array($provides, $this->provides);
+    }
+
+    /**
+     * Retrieve an Asset by what it provides
+     *
+     * @param string $provides
+     */
+    public function getProvided($provides)
+    {
+        foreach ($this->assets as $asset) {
+            if ($asset->provides() == $provides) {
+                return $asset->get($this);
+            }
+        }
+    }
+
 }

tests/lib/Proem/Tests/ServiceTest.php

@@ -137,6 +137,41 @@ public function testAssetManagerCanStoreAndRetrieve()
         $this->assertInstanceOf('Proem\Service\Asset\Bar', $am->get('bar'));
     }
 
+    public function testAssetProvides()
+    {
+        $bar = new Asset;
+        $bar->provides('foo');
+        $this->assertEquals('foo', $bar->provides());
+    }
+
+    public function testManagerProvides()
+    {
+        $bar = new Asset;
+        $bar->provides('foo');
+
+        $am = new Manager;
+        $am->set('bar', $bar);
+        $this->assertTrue($am->provides('foo'));
+    }
+
+    public function testRetrieveByProvides()
+    {
+        $bar = new Asset;
+        $bar->provides('Bar')->set(function() {
+            return new Bar;
+        });
+
+        $foo = new Asset;
+        $foo->provides('Foo')->set(function() {
+            return new Foo;
+        });
+
+        $am = new Manager;
+        $am->set('bar', $bar)->set('foo', $foo);
+
+        $this->assertInstanceOf('Proem\Service\Asset\Bar', $am->getProvided('Bar'));
+    }
+
     public function testCanGetDepsThroughManager()
     {
         $bar = new Asset;