Test Collection::getBuilderEncoder() and getCodec()

Also fixes the return type for getBuilderEncoder()

Author: jmikola

src/Collection.php

@@ -753,7 +753,7 @@ public function findOneAndUpdate(array|object $filter, array|object $update, arr
         return $operation->execute(select_server_for_write($this->manager, $options));
     }
 
-    public function getBuilderEncoder(): BuilderEncoder
+    public function getBuilderEncoder(): Encoder
     {
         return $this->builderEncoder;
     }

tests/Collection/CollectionFunctionalTest.php

@@ -77,6 +77,22 @@ public static function provideInvalidConstructorOptions(): array
         ]);
     }
 
+    public function testGetBuilderEncoder(): void
+    {
+        $collectionOptions = ['builderEncoder' => $this->createMock(Encoder::class)];
+        $collection = new Collection($this->manager, $this->getDatabaseName(), $this->getCollectionName(), $collectionOptions);
+
+        $this->assertSame($collectionOptions['builderEncoder'], $collection->getBuilderEncoder());
+    }
+
+    public function testGetCodec(): void
+    {
+        $collectionOptions = ['codec' => $this->createMock(DocumentCodec::class)];
+        $collection = new Collection($this->manager, $this->getDatabaseName(), $this->getCollectionName(), $collectionOptions);
+
+        $this->assertSame($collectionOptions['codec'], $collection->getCodec());
+    }
+
     public function testGetManager(): void
     {
         $this->assertSame($this->manager, $this->collection->getManager());