Move ReaderFactory into Common/Creator

tests/Spout/Reader/Common/Creator/ReaderFactoryTest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Box\Spout\Reader\Common\Creator;
+
+use Box\Spout\Common\Exception\UnsupportedTypeException;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Class ReaderFactoryTest
+ */
+class ReaderFactoryTest extends TestCase
+{
+    /**
+     * @return void
+     */
+    public function testCreateReaderShouldThrowWithUnsupportedType()
+    {
+        $this->expectException(UnsupportedTypeException::class);
+
+        ReaderFactory::create('unsupportedType');
+    }
+}