implement removeIndex method

Author: nekufa

src/Repository.php

@@ -257,6 +257,11 @@ public function save($instance)
         }
 
 
+        $this->flushCache();
+    }
+
+    public function flushCache()
+    {
         $this->cache = [];
     }
 }

src/Space.php

@@ -35,6 +35,13 @@ public function addProperty($name, $type)
         $this->parseFormat();
     }
 
+    public function removeIndex($name)
+    {
+        $this->mapper->getClient()->evaluate("box.space[$this->id].index.$name:drop()");
+        $this->indexes = [];
+        $this->mapper->getRepository('_index')->flushCache();
+    }
+
     public function createIndex($config)
     {
 

tests/SchemaTest.php

@@ -6,6 +6,27 @@
 
 class SchemaTest extends TestCase
 {
+    public function testRemoveIndex()
+    {
+        $mapper = $this->createMapper();
+        $this->clean($mapper);
+
+        $space = $mapper->getSchema()->createSpace('tester');
+        $space->addProperty('id', 'unsigned');
+        $space->addProperty('iid', 'unsigned');
+
+        $space->createIndex(['id']);
+        $space->createIndex(['iid']);
+
+        $this->assertCount(2, $space->getIndexes());
+
+        $space->removeIndex('iid');
+        $this->assertCount(1, $space->getIndexes());
+
+        $this->expectException(Exception::class);
+        $space->removeIndex('iid');
+    }
+
     public function testNoSpaceException()
     {
         $mapper = $this->createMapper();