add keys endpoint "/keys/:id" (GitLabPHP#162)

Author: rasj

lib/Gitlab/Api/Keys.php

@@ -0,0 +1,13 @@
+<?php namespace Gitlab\Api;
+
+class Keys extends AbstractApi
+{
+    /**
+     * @param int $id
+     * @return mixed
+     */
+    public function show($id)
+    {
+        return $this->get('keys/'.$this->encodePath($id));
+    }
+}

lib/Gitlab/Client.php

@@ -30,6 +30,7 @@
  * @property-read \Gitlab\Api\SystemHooks $hooks
  * @property-read \Gitlab\Api\SystemHooks $system_hooks
  * @property-read \Gitlab\Api\Users $users
+ * @property-read \Gitlab\Api\Keys $keys
  */
 class Client
 {
@@ -155,6 +156,10 @@ public function api($name)
                 $api = new Api\Users($this);
                 break;
 
+            case 'keys':
+                $api = new Api\Keys($this);
+                break;
+
             default:
                 throw new InvalidArgumentException('Invalid endpoint: "'.$name.'"');
 

test/Gitlab/Tests/Api/KeysTest.php

@@ -0,0 +1,26 @@
+<?php namespace Gitlab\Tests\Api;
+
+use Gitlab\Api\AbstractApi;
+
+class KeysTest extends ApiTestCase
+{
+    /**
+     * @test
+     */
+    public function shouldShowKey()
+    {
+        $expectedArray = array('id' => 1, 'title' => 'A key', 'key' => 'ssh-rsa key', 'created_at' => '2016-01-01T01:00:00.000Z');
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('get')
+            ->with('keys/1')
+            ->will($this->returnValue($expectedArray));
+
+        $this->assertEquals($expectedArray, $api->show(1));
+    }
+
+    protected function getApiClass()
+    {
+        return 'Gitlab\Api\Keys';
+    }
+}