From 74ef259f14ae9296bbdec530c36d95c3175c0d45 Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.com>
Date: Sat, 4 May 2024 11:14:02 +0200
Subject: [PATCH] Add declare(strict_types=1) declarations

---
 src/AbstractBinaryType.php              | 2 ++
 src/AbstractType.php                    | 2 ++
 src/Exceptions/NotMatchingException.php | 2 ++
 src/MimeSniffer.php                     | 2 ++
 src/Types/ApplicationGzip.php           | 2 ++
 src/Types/ApplicationOctetStream.php    | 2 ++
 src/Types/ApplicationOgg.php            | 2 ++
 src/Types/ApplicationPdf.php            | 2 ++
 src/Types/ApplicationRar.php            | 2 ++
 src/Types/ApplicationSqlite.php         | 2 ++
 src/Types/ApplicationTar.php            | 2 ++
 src/Types/ApplicationZip.php            | 2 ++
 src/Types/AudioFlac.php                 | 2 ++
 src/Types/AudioMpeg.php                 | 2 ++
 src/Types/ImageAvif.php                 | 2 ++
 src/Types/ImageBmp.php                  | 2 ++
 src/Types/ImageGif.php                  | 2 ++
 src/Types/ImageHeic.php                 | 2 ++
 src/Types/ImageHeif.php                 | 2 ++
 src/Types/ImageIco.php                  | 2 ++
 src/Types/ImageJpeg.php                 | 2 ++
 src/Types/ImagePng.php                  | 2 ++
 src/Types/ImagePsd.php                  | 2 ++
 src/Types/ImageSvg.php                  | 2 ++
 src/Types/ImageTiff.php                 | 2 ++
 src/Types/ImageWebp.php                 | 2 ++
 src/Types/TextPlain.php                 | 2 ++
 src/Types/VideoMpeg.php                 | 2 ++
 src/Types/VideoXmatroska.php            | 2 ++
 src/Types/VideoXmsvideo.php             | 2 ++
 tests/AbstractBinaryTypeTest.php        | 2 ++
 tests/AbstractTypeTest.php              | 2 ++
 tests/ApplicationGzipTest.php           | 2 ++
 tests/ApplicationOggTest.php            | 2 ++
 tests/ApplicationPdfTest.php            | 2 ++
 tests/ApplicationRarTest.php            | 2 ++
 tests/ApplicationSqliteTest.php         | 2 ++
 tests/ApplicationTarTest.php            | 2 ++
 tests/ApplicationZipTest.php            | 2 ++
 tests/AudioFlacTest.php                 | 2 ++
 tests/AudioMpegId3v2Test.php            | 2 ++
 tests/AudioMpegTest.php                 | 2 ++
 tests/ImageAvifTest.php                 | 2 ++
 tests/ImageBmpTest.php                  | 2 ++
 tests/ImageGifTest.php                  | 2 ++
 tests/ImageHeicTest.php                 | 2 ++
 tests/ImageHeifTest.php                 | 2 ++
 tests/ImageIcoTest.php                  | 2 ++
 tests/ImageJpegTest.php                 | 2 ++
 tests/ImagePngTest.php                  | 2 ++
 tests/ImagePsdTest.php                  | 2 ++
 tests/ImageSvgTest.php                  | 2 ++
 tests/ImageTiffTest.php                 | 2 ++
 tests/ImageWebpTest.php                 | 2 ++
 tests/MimeSnifferTest.php               | 2 ++
 tests/VideoMpegTest.php                 | 2 ++
 tests/VideoXmatroskaTest.php            | 2 ++
 tests/VideoXmsvideoTest.php             | 2 ++
 58 files changed, 116 insertions(+)

diff --git a/src/AbstractBinaryType.php b/src/AbstractBinaryType.php
index 3cad5d5..020c1f7 100644
--- a/src/AbstractBinaryType.php
+++ b/src/AbstractBinaryType.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer;
 
 abstract class AbstractBinaryType extends AbstractType
diff --git a/src/AbstractType.php b/src/AbstractType.php
index 0bb2a52..08787bd 100644
--- a/src/AbstractType.php
+++ b/src/AbstractType.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer;
 
 abstract class AbstractType
diff --git a/src/Exceptions/NotMatchingException.php b/src/Exceptions/NotMatchingException.php
index dd98edb..db164bb 100644
--- a/src/Exceptions/NotMatchingException.php
+++ b/src/Exceptions/NotMatchingException.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Exceptions;
 
 use RuntimeException;
diff --git a/src/MimeSniffer.php b/src/MimeSniffer.php
index e8046d4..7b4cf27 100644
--- a/src/MimeSniffer.php
+++ b/src/MimeSniffer.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer;
 
 class MimeSniffer
diff --git a/src/Types/ApplicationGzip.php b/src/Types/ApplicationGzip.php
index 4a0a103..6ae2423 100644
--- a/src/Types/ApplicationGzip.php
+++ b/src/Types/ApplicationGzip.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ApplicationOctetStream.php b/src/Types/ApplicationOctetStream.php
index 798853c..f856e56 100644
--- a/src/Types/ApplicationOctetStream.php
+++ b/src/Types/ApplicationOctetStream.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractType;
diff --git a/src/Types/ApplicationOgg.php b/src/Types/ApplicationOgg.php
index 77b8dad..d57e5c9 100644
--- a/src/Types/ApplicationOgg.php
+++ b/src/Types/ApplicationOgg.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ApplicationPdf.php b/src/Types/ApplicationPdf.php
index 374f3ca..bc41f7d 100644
--- a/src/Types/ApplicationPdf.php
+++ b/src/Types/ApplicationPdf.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ApplicationRar.php b/src/Types/ApplicationRar.php
index ed0af47..203e3b7 100644
--- a/src/Types/ApplicationRar.php
+++ b/src/Types/ApplicationRar.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ApplicationSqlite.php b/src/Types/ApplicationSqlite.php
index 5d839c6..17d96bc 100644
--- a/src/Types/ApplicationSqlite.php
+++ b/src/Types/ApplicationSqlite.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ApplicationTar.php b/src/Types/ApplicationTar.php
index 4da8590..964431f 100644
--- a/src/Types/ApplicationTar.php
+++ b/src/Types/ApplicationTar.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ApplicationZip.php b/src/Types/ApplicationZip.php
index 9cb6354..e6f3b65 100644
--- a/src/Types/ApplicationZip.php
+++ b/src/Types/ApplicationZip.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/AudioFlac.php b/src/Types/AudioFlac.php
index f176960..0d2ac15 100644
--- a/src/Types/AudioFlac.php
+++ b/src/Types/AudioFlac.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/AudioMpeg.php b/src/Types/AudioMpeg.php
index 1dd0929..b706e03 100644
--- a/src/Types/AudioMpeg.php
+++ b/src/Types/AudioMpeg.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageAvif.php b/src/Types/ImageAvif.php
index f9c1321..3cb40b0 100644
--- a/src/Types/ImageAvif.php
+++ b/src/Types/ImageAvif.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageBmp.php b/src/Types/ImageBmp.php
index f7f6dbe..6f4b3cd 100644
--- a/src/Types/ImageBmp.php
+++ b/src/Types/ImageBmp.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageGif.php b/src/Types/ImageGif.php
index 04a7e10..a4421e7 100644
--- a/src/Types/ImageGif.php
+++ b/src/Types/ImageGif.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageHeic.php b/src/Types/ImageHeic.php
index b80a693..950b754 100644
--- a/src/Types/ImageHeic.php
+++ b/src/Types/ImageHeic.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageHeif.php b/src/Types/ImageHeif.php
index 4216bf4..c9967c2 100644
--- a/src/Types/ImageHeif.php
+++ b/src/Types/ImageHeif.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageIco.php b/src/Types/ImageIco.php
index bf1fae8..66466e5 100644
--- a/src/Types/ImageIco.php
+++ b/src/Types/ImageIco.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageJpeg.php b/src/Types/ImageJpeg.php
index 6558369..57c0405 100644
--- a/src/Types/ImageJpeg.php
+++ b/src/Types/ImageJpeg.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImagePng.php b/src/Types/ImagePng.php
index c0a4f85..85c9259 100644
--- a/src/Types/ImagePng.php
+++ b/src/Types/ImagePng.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImagePsd.php b/src/Types/ImagePsd.php
index 4a7d6f4..1bc674d 100644
--- a/src/Types/ImagePsd.php
+++ b/src/Types/ImagePsd.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageSvg.php b/src/Types/ImageSvg.php
index 887e189..9d49169 100644
--- a/src/Types/ImageSvg.php
+++ b/src/Types/ImageSvg.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractType;
diff --git a/src/Types/ImageTiff.php b/src/Types/ImageTiff.php
index 22fb48f..c86455d 100644
--- a/src/Types/ImageTiff.php
+++ b/src/Types/ImageTiff.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/ImageWebp.php b/src/Types/ImageWebp.php
index 1c389be..3cabdaa 100644
--- a/src/Types/ImageWebp.php
+++ b/src/Types/ImageWebp.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/TextPlain.php b/src/Types/TextPlain.php
index 5f3071c..4d12388 100644
--- a/src/Types/TextPlain.php
+++ b/src/Types/TextPlain.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractType;
diff --git a/src/Types/VideoMpeg.php b/src/Types/VideoMpeg.php
index 50644db..3a42531 100644
--- a/src/Types/VideoMpeg.php
+++ b/src/Types/VideoMpeg.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/VideoXmatroska.php b/src/Types/VideoXmatroska.php
index 90fae5a..a996553 100644
--- a/src/Types/VideoXmatroska.php
+++ b/src/Types/VideoXmatroska.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/src/Types/VideoXmsvideo.php b/src/Types/VideoXmsvideo.php
index 23b6a13..c8fec3e 100644
--- a/src/Types/VideoXmsvideo.php
+++ b/src/Types/VideoXmsvideo.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Types;
 
 use Intervention\MimeSniffer\AbstractBinaryType;
diff --git a/tests/AbstractBinaryTypeTest.php b/tests/AbstractBinaryTypeTest.php
index 97862a9..e2cb247 100644
--- a/tests/AbstractBinaryTypeTest.php
+++ b/tests/AbstractBinaryTypeTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/AbstractTypeTest.php b/tests/AbstractTypeTest.php
index 5359652..f6982de 100644
--- a/tests/AbstractTypeTest.php
+++ b/tests/AbstractTypeTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationGzipTest.php b/tests/ApplicationGzipTest.php
index ba85ff0..b57020e 100644
--- a/tests/ApplicationGzipTest.php
+++ b/tests/ApplicationGzipTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationOggTest.php b/tests/ApplicationOggTest.php
index 055f99c..9e8da56 100644
--- a/tests/ApplicationOggTest.php
+++ b/tests/ApplicationOggTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationPdfTest.php b/tests/ApplicationPdfTest.php
index 6de9e67..26dc1b2 100644
--- a/tests/ApplicationPdfTest.php
+++ b/tests/ApplicationPdfTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationRarTest.php b/tests/ApplicationRarTest.php
index 1eb1e22..21bc8d4 100644
--- a/tests/ApplicationRarTest.php
+++ b/tests/ApplicationRarTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationSqliteTest.php b/tests/ApplicationSqliteTest.php
index aa46eff..ff02aa9 100644
--- a/tests/ApplicationSqliteTest.php
+++ b/tests/ApplicationSqliteTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationTarTest.php b/tests/ApplicationTarTest.php
index e093dae..aaaabd9 100644
--- a/tests/ApplicationTarTest.php
+++ b/tests/ApplicationTarTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ApplicationZipTest.php b/tests/ApplicationZipTest.php
index 2094218..dcc7965 100644
--- a/tests/ApplicationZipTest.php
+++ b/tests/ApplicationZipTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/AudioFlacTest.php b/tests/AudioFlacTest.php
index aef7672..26f02be 100644
--- a/tests/AudioFlacTest.php
+++ b/tests/AudioFlacTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/AudioMpegId3v2Test.php b/tests/AudioMpegId3v2Test.php
index d5d5f16..5860eb5 100644
--- a/tests/AudioMpegId3v2Test.php
+++ b/tests/AudioMpegId3v2Test.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/AudioMpegTest.php b/tests/AudioMpegTest.php
index 0c51525..b40d3b4 100644
--- a/tests/AudioMpegTest.php
+++ b/tests/AudioMpegTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageAvifTest.php b/tests/ImageAvifTest.php
index f760e80..915f8a4 100644
--- a/tests/ImageAvifTest.php
+++ b/tests/ImageAvifTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageBmpTest.php b/tests/ImageBmpTest.php
index a4c23cc..a939408 100644
--- a/tests/ImageBmpTest.php
+++ b/tests/ImageBmpTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageGifTest.php b/tests/ImageGifTest.php
index 3c94b20..7d4522b 100644
--- a/tests/ImageGifTest.php
+++ b/tests/ImageGifTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageHeicTest.php b/tests/ImageHeicTest.php
index 4ef493f..6e91a38 100644
--- a/tests/ImageHeicTest.php
+++ b/tests/ImageHeicTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageHeifTest.php b/tests/ImageHeifTest.php
index e9ec917..812b36f 100644
--- a/tests/ImageHeifTest.php
+++ b/tests/ImageHeifTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageIcoTest.php b/tests/ImageIcoTest.php
index 37eb486..aa77f17 100644
--- a/tests/ImageIcoTest.php
+++ b/tests/ImageIcoTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageJpegTest.php b/tests/ImageJpegTest.php
index 7b8ebcf..ad6b413 100644
--- a/tests/ImageJpegTest.php
+++ b/tests/ImageJpegTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImagePngTest.php b/tests/ImagePngTest.php
index 4e73a6a..c121d2a 100644
--- a/tests/ImagePngTest.php
+++ b/tests/ImagePngTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImagePsdTest.php b/tests/ImagePsdTest.php
index 3203b44..eabe663 100644
--- a/tests/ImagePsdTest.php
+++ b/tests/ImagePsdTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageSvgTest.php b/tests/ImageSvgTest.php
index fa048b3..26d6fb1 100644
--- a/tests/ImageSvgTest.php
+++ b/tests/ImageSvgTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use Intervention\MimeSniffer\MimeSniffer;
diff --git a/tests/ImageTiffTest.php b/tests/ImageTiffTest.php
index 2a23dc8..b4b140a 100644
--- a/tests/ImageTiffTest.php
+++ b/tests/ImageTiffTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/ImageWebpTest.php b/tests/ImageWebpTest.php
index 14727c3..a900935 100644
--- a/tests/ImageWebpTest.php
+++ b/tests/ImageWebpTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/MimeSnifferTest.php b/tests/MimeSnifferTest.php
index 6ad4081..d5778fb 100644
--- a/tests/MimeSnifferTest.php
+++ b/tests/MimeSnifferTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use Intervention\MimeSniffer\MimeSniffer;
diff --git a/tests/VideoMpegTest.php b/tests/VideoMpegTest.php
index 4912f26..00722fd 100644
--- a/tests/VideoMpegTest.php
+++ b/tests/VideoMpegTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/VideoXmatroskaTest.php b/tests/VideoXmatroskaTest.php
index b42dc38..4f05bff 100644
--- a/tests/VideoXmatroskaTest.php
+++ b/tests/VideoXmatroskaTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/VideoXmsvideoTest.php b/tests/VideoXmsvideoTest.php
index 7456d7f..f3e1717 100644
--- a/tests/VideoXmsvideoTest.php
+++ b/tests/VideoXmsvideoTest.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace Intervention\MimeSniffer\Tests;
 
 use PHPUnit\Framework\TestCase;