Add archive/unarchive functionality (#142)

* Added the archive & unarchive methods to API.

* Added the archive/unarchive calls to the Project Model.

* Added test for Archiving

* Added Unarchive Test

Author: Anthony Lawrence

lib/Gitlab/Api/Projects.php

@@ -126,6 +126,22 @@ public function remove($project_id)
     {
         return $this->delete('projects/'.$this->encodePath($project_id));
     }
+    
+    /**
+     * @param int $project_id
+     * @return mixed
+     */
+    public function archive($project_id){
+        return $this->post("projects/".$this->encodePath($project_id)."/archive");
+    }
+    
+    /**
+     * @param int $project_id
+     * @return mixed
+     */
+    public function unarchive($project_id){
+        return $this->post("projects/".$this->encodePath($project_id)."/unarchive");
+    }
 
     /**
      * @param int $project_id

lib/Gitlab/Model/Project.php

@@ -141,6 +141,26 @@ public function update(array $params)
 
         return static::fromArray($this->getClient(), $data);
     }
+    
+    /**
+     * @return Project
+     */
+    public function archive()
+    {
+        $data = $this->api("projects")->archive($this->id);
+        
+        return static::fromArray($this->getClient(), $data);
+    }
+    
+    /**
+     * @return Project
+     */
+    public function unarchive()
+    {
+        $data = $this->api("projects")->unarchive($this->id);
+        
+        return static::fromArray($this->getClient(), $data);
+    }
 
     /**
      * @return bool

test/Gitlab/Tests/Api/ProjectsTest.php

@@ -142,6 +142,40 @@ public function shouldUpdateProject()
             'issues_enabled' => true
         )));
     }
+    
+    /**
+     * @test
+     */
+    public function shouldArchiveProject()
+    {
+        $expectedArray = array('id' => 1, 'archived' => true);
+
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('post')
+            ->with('projects/1/archive')
+            ->will($this->returnValue($expectedArray))
+        ;
+
+        $this->assertEquals($expectedArray, $api->archive(1));
+    }
+    
+    /**
+     * @test
+     */
+    public function shouldUnarchiveProject()
+    {
+        $expectedArray = array('id' => 1, 'archived' => false);
+
+        $api = $this->getApiMock();
+        $api->expects($this->once())
+            ->method('post')
+            ->with('projects/1/unarchive')
+            ->will($this->returnValue($expectedArray))
+        ;
+
+        $this->assertEquals($expectedArray, $api->unarchive(1));
+    }
 
     /**
      * @test