diff --git a/tests/QROptionsTest.php b/tests/QROptionsTest.php
new file mode 100644
index 000000000..d6208bfda
--- /dev/null
+++ b/tests/QROptionsTest.php
@@ -0,0 +1,69 @@
+<?php
+/**
+ * Class QROptionsTest
+ *
+ * @filesource   QROptionsTest.php
+ * @created      08.11.2018
+ * @package      chillerlan\QRCodeTest
+ * @author       smiley <smiley@chillerlan.net>
+ * @copyright    2018 smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCodeTest;
+
+use chillerlan\QRCode\{QRCode,QROptions};
+use PHPUnit\Framework\TestCase;
+
+class QROptionsTest extends TestCase{
+
+	/**
+	 * @var \chillerlan\QRCode\QROptions
+	 */
+	protected $options;
+
+	public function testVersionClamp(){
+		$this->assertSame(40, (new QROptions(['version' => 42]))->version);
+		$this->assertSame(1, (new QROptions(['version' => -42]))->version);
+		$this->assertSame(21, (new QROptions(['version' => 21]))->version);
+	}
+
+	public function testVersionMinMaxClamp(){
+		// normal clamp
+		$o = new QROptions(['versionMin' => 5, 'versionMax' => 10]);
+		$this->assertSame(5, $o->versionMin);
+		$this->assertSame(10, $o->versionMax);
+		// exceeding values
+		$o = new QROptions(['versionMin' => -42, 'versionMax' => 42]);
+		$this->assertSame(1, $o->versionMin);
+		$this->assertSame(40, $o->versionMax);
+
+		// min > max
+		$o = new QROptions(['versionMin' => 10, 'versionMax' => 5]);
+		$this->assertSame(5, $o->versionMin);
+		$this->assertSame(10, $o->versionMax);
+
+		$o = new QROptions(['versionMin' => 42, 'versionMax' => -42]);
+		$this->assertSame(1, $o->versionMin);
+		$this->assertSame(40, $o->versionMax);
+	}
+
+	public function testMaskPatternClamp(){
+		$o = new QROptions(['maskPattern' => 42]);
+		$this->assertSame(7, $o->maskPattern);
+
+		$o = new QROptions(['maskPattern' => -42]);
+		$this->assertSame(0, $o->maskPattern);
+
+		$o = new QROptions(['maskPattern' => QRCode::MASK_PATTERN_AUTO]); // -1
+		$this->assertSame(QRCode::MASK_PATTERN_AUTO, $o->maskPattern);
+	}
+
+	/**
+	 * @expectedException \chillerlan\QRCode\QRCodeException
+	 * @expectedExceptionMessage Invalid error correct level: 42
+	 */
+	public function testInvalidEccLevelException(){
+		new QROptions(['eccLevel' => 42]);
+	}
+}