diff --git a/tests/Common/MaskPatternTest.php b/tests/Common/MaskPatternTest.php
new file mode 100644
index 000000000..fa3924259
--- /dev/null
+++ b/tests/Common/MaskPatternTest.php
@@ -0,0 +1,123 @@
+<?php
+/**
+ * Class MaskPatternTest
+ *
+ * @created      21.11.2021
+ * @author       ZXing Authors
+ * @author       smiley <smiley@chillerlan.net>
+ * @copyright    2021 smiley
+ * @license      Apache-2.0
+ */
+
+namespace chillerlan\QRCodeTest\Common;
+
+use chillerlan\QRCode\Common\MaskPattern;
+use chillerlan\QRCode\QRCodeException;
+use Closure;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @see https://github.com/zxing/zxing/blob/f4f3c2971dc794346d8b6e14752200008cb90716/core/src/test/java/com/google/zxing/qrcode/encoder/MaskUtilTestCase.java
+ */
+final class MaskPatternTest extends TestCase{
+
+	// See mask patterns on the page 43 of JISX0510:2004.
+	public function maskPatternProvider():array{
+		return [
+			'PATTERN_000' => [MaskPattern::PATTERN_000, [
+				[1, 0, 1, 0, 1, 0],
+				[0, 1, 0, 1, 0, 1],
+				[1, 0, 1, 0, 1, 0],
+				[0, 1, 0, 1, 0, 1],
+				[1, 0, 1, 0, 1, 0],
+				[0, 1, 0, 1, 0, 1],
+			]],
+			'PATTERN_001' => [MaskPattern::PATTERN_001, [
+				[1, 1, 1, 1, 1, 1],
+				[0, 0, 0, 0, 0, 0],
+				[1, 1, 1, 1, 1, 1],
+				[0, 0, 0, 0, 0, 0],
+				[1, 1, 1, 1, 1, 1],
+				[0, 0, 0, 0, 0, 0],
+			]],
+			'PATTERN_010' => [MaskPattern::PATTERN_010, [
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 0, 1, 0, 0],
+			]],
+			'PATTERN_011' => [MaskPattern::PATTERN_011, [
+				[1, 0, 0, 1, 0, 0],
+				[0, 0, 1, 0, 0, 1],
+				[0, 1, 0, 0, 1, 0],
+				[1, 0, 0, 1, 0, 0],
+				[0, 0, 1, 0, 0, 1],
+				[0, 1, 0, 0, 1, 0],
+			]],
+			'PATTERN_100' => [MaskPattern::PATTERN_100, [
+				[1, 1, 1, 0, 0, 0],
+				[1, 1, 1, 0, 0, 0],
+				[0, 0, 0, 1, 1, 1],
+				[0, 0, 0, 1, 1, 1],
+				[1, 1, 1, 0, 0, 0],
+				[1, 1, 1, 0, 0, 0],
+			]],
+			'PATTERN_101' => [MaskPattern::PATTERN_101, [
+				[1, 1, 1, 1, 1, 1],
+				[1, 0, 0, 0, 0, 0],
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 1, 0, 1, 0],
+				[1, 0, 0, 1, 0, 0],
+				[1, 0, 0, 0, 0, 0],
+			]],
+			'PATTERN_110' => [MaskPattern::PATTERN_110, [
+				[1, 1, 1, 1, 1, 1],
+				[1, 1, 1, 0, 0, 0],
+				[1, 1, 0, 1, 1, 0],
+				[1, 0, 1, 0, 1, 0],
+				[1, 0, 1, 1, 0, 1],
+				[1, 0, 0, 0, 1, 1],
+			]],
+			'PATTERN_111' => [MaskPattern::PATTERN_111, [
+				[1, 0, 1, 0, 1, 0],
+				[0, 0, 0, 1, 1, 1],
+				[1, 0, 0, 0, 1, 1],
+				[0, 1, 0, 1, 0, 1],
+				[1, 1, 1, 0, 0, 0],
+				[0, 1, 1, 1, 0, 0],
+			]],
+		];
+	}
+
+	/**
+	 * @dataProvider maskPatternProvider
+	 */
+	public function testMask(int $pattern, array $expected):void{
+		$maskPattern = new MaskPattern($pattern);
+
+		$this::assertTrue($this->assertMask($maskPattern->getMask(), $expected));
+	}
+
+	private function assertMask(Closure $mask, array $expected):bool{
+
+		for($x = 0; $x < 6; $x++){
+			for($y = 0; $y < 6; $y++){
+				if(($expected[$y][$x] === 1) !== $mask($x, $y)){
+					return false;
+				}
+			}
+		}
+
+		return true;
+	}
+
+	public function testInvalidMaskPatternException():void{
+		$this->expectException(QRCodeException::class);
+		$this->expectExceptionMessage('invalid mask pattern');
+
+		$maskPattern = new MaskPattern(42);
+	}
+
+}