diff --git a/tests/Unit/Http/Middleware/NormalizeLineEndingTest.php b/tests/Unit/Http/Middleware/NormalizeLineEndingTest.php
new file mode 100644
index 0000000..7d16f0b
--- /dev/null
+++ b/tests/Unit/Http/Middleware/NormalizeLineEndingTest.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Tests\Unit\Http\Middleware;
+
+use App\Http\Middleware\NormalizeLineEnding;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Foundation\Testing\WithFaker;
+use Illuminate\Http\Request;
+use Tests\TestCase;
+
+class NormalizeLineEndingTest extends TestCase
+{
+    public function testCRLFtoLF()
+    {
+        $request = Request::create('/');
+        $request->replace([
+            'test' => "foo\r\nbar"
+        ]);
+
+        $middleware = new NormalizeLineEnding();
+
+        $middleware->handle($request, function (Request $request) {
+            $this->assertEquals("foo\nbar", $request->input('test'));
+        });
+    }
+
+    public function testCRtoLF()
+    {
+        $request = Request::create('/');
+        $request->replace([
+            'test' => "foo\rbar"
+        ]);
+
+        $middleware = new NormalizeLineEnding();
+
+        $middleware->handle($request, function (Request $request) {
+            $this->assertEquals("foo\nbar", $request->input('test'));
+        });
+    }
+
+    public function testLFtoLF()
+    {
+        $request = Request::create('/');
+        $request->replace([
+            'test' => "foo\nbar"
+        ]);
+
+        $middleware = new NormalizeLineEnding();
+
+        $middleware->handle($request, function (Request $request) {
+            $this->assertEquals("foo\nbar", $request->input('test'));
+        });
+    }
+
+    public function testArrayRequest()
+    {
+        $request = Request::create('/');
+        $request->replace([
+            'test' => "foo\r\nbar",
+            'hash' => [
+                'yuzuki' => "yuzuki\r\nyukari",
+                'miku' => "hatsune\r\nmiku",
+            ],
+            'array' => [
+                "kagamine\r\nrin",
+                "kagamine\r\nlen"
+            ]
+        ]);
+
+        $middleware = new NormalizeLineEnding();
+
+        $middleware->handle($request, function (Request $request) {
+            $this->assertEquals("foo\nbar", $request->input('test'));
+            $this->assertEquals("yuzuki\nyukari", $request->input('hash.yuzuki'));
+            $this->assertEquals("hatsune\nmiku", $request->input('hash.miku'));
+            $this->assertEquals("kagamine\nrin", $request->input('array.0'));
+            $this->assertEquals("kagamine\nlen", $request->input('array.1'));
+        });
+    }
+}