Merge branch 'stable'

tests/phpunit/world/format/io/LevelProviderManagerTest.php

@@ -0,0 +1,53 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+declare(strict_types=1);
+
+namespace pocketmine\world\format\io;
+
+use PHPUnit\Framework\TestCase;
+
+class LevelProviderManagerTest extends TestCase{
+
+	public function testAddNonClassProvider() : void{
+		$this->expectException(\InvalidArgumentException::class);
+
+		WorldProviderManager::addProvider("lol", "nope");
+	}
+
+	public function testAddAbstractClassProvider() : void{
+		$this->expectException(\InvalidArgumentException::class);
+
+		WorldProviderManager::addProvider(AbstractWorldProvider::class, "abstract");
+	}
+
+	public function testAddInterfaceProvider() : void{
+		$this->expectException(\InvalidArgumentException::class);
+
+		WorldProviderManager::addProvider(InterfaceWorldProvider::class, "interface");
+	}
+
+	public function testAddWrongClassProvider() : void{
+		$this->expectException(\InvalidArgumentException::class);
+
+		WorldProviderManager::addProvider(LevelProviderManagerTest::class, "bad_class");
+	}
+}