PHPLIB-71: Collection drop methods

src/Collection.php

@@ -334,11 +334,15 @@ class Collection
     /**
      * Drop this collection.
      *
+     * @see http://docs.mongodb.org/manual/reference/command/drop/
      * @return Result
      */
     public function drop()
     {
-        // TODO
+        $command = new Command(array('drop' => $this->collname));
+        $readPreference = new ReadPreference(ReadPreference::RP_PRIMARY);
+
+        return $this->manager->executeCommand($this->dbname, $command, $readPreference);
     }
 
     /**

src/Database.php

@@ -66,12 +66,17 @@ class Database
     /**
      * Drop a collection within this database.
      *
+     * @see http://docs.mongodb.org/manual/reference/command/drop/
      * @param string $collectionName
      * @return Result
      */
     public function dropCollection($collectionName)
     {
-        // TODO
+        $collectionName = (string) $collectionName;
+        $command = new Command(array('drop' => $collectionName));
+        $readPreference = new ReadPreference(ReadPreference::RP_PRIMARY);
+
+        return $this->manager->executeCommand($this->databaseName, $command, $readPreference);
     }
 
     /**

tests/CollectionFunctionalTest.php

@@ -17,6 +17,16 @@ class CollectionFunctionalTest extends FunctionalTestCase
         $this->collection->deleteMany(array());
     }
 
+    public function testDrop()
+    {
+        $writeResult = $this->collection->insertOne(array('x' => 1));
+        $this->assertEquals(1, $writeResult->getInsertedCount());
+
+        $commandResult = $this->collection->drop();
+        $this->assertCommandSucceeded($commandResult);
+        $this->assertCollectionCount($this->getNamespace(), 0);
+    }
+
     function testInsertAndRetrieve()
     {
         $generator = new FixtureGenerator();

tests/DatabaseFunctionalTest.php

@@ -20,4 +20,15 @@ class DatabaseFunctionalTest extends FunctionalTestCase
         $this->assertCommandSucceeded($commandResult);
         $this->assertCollectionCount($this->getNamespace(), 0);
     }
+
+    public function testDropCollection()
+    {
+        $writeResult = $this->manager->executeInsert($this->getNamespace(), array('x' => 1));
+        $this->assertEquals(1, $writeResult->getInsertedCount());
+
+        $database = new Database($this->manager, $this->getDatabaseName());
+        $commandResult = $database->dropCollection($this->getCollectionName());
+        $this->assertCommandSucceeded($commandResult);
+        $this->assertCollectionCount($this->getNamespace(), 0);
+    }
 }