write some more tests

tests/SettingsTest.php

@@ -27,6 +27,27 @@ use PHPUnit\Framework\TestCase;
 
 class SettingsTest extends TestCase
 {
+	public function testLoadNoFile()
+	{
+		$this->expectException(\ErrorException::class);
+		(new Settings())->load();
+	}
+	
+	public function testLoad()
+	{
+		$cfg = (new Settings())->appPath(dirname(__FILE__).'/')->load();
+		$this->assertNotEmpty($cfg);
+		return $cfg;
+	}
+	
+	/**
+	 * @depends testLoad
+	 */
+	public function testMode(Settings $cfg)
+	{
+		$this->assertEquals('test', $cfg->mode);
+	}
+	
 	public function testBuildFileName()
 	{
 		$path = './config/';

tests/config/VeruA.default.conf.php

@@ -0,0 +1,3 @@
+<?php return [
+	'mode' => 'test'
+];