Make MimeType::isType case-insensitive

Updated the isType method in MimeType to perform case-insensitive checks by converting the input to lowercase. Adjusted and expanded unit tests to verify case insensitivity and improved test coverage.

Author: JosephGabito

src/Files/ValueObjects/MimeType.php

@@ -181,7 +181,7 @@ public static function isValid(string $mimeType): bool
      */
     public function isType(string $mimeType): bool
     {
-        return strpos($this->value, $mimeType . '/') === 0;
+        return strpos($this->value, strtolower($mimeType) . '/') === 0;
     }
 
     /**

tests/unit/Files/ValueObjects/MimeTypeTest.php

@@ -283,15 +283,21 @@ public function testNormalizesValues(): void
         $this->assertEquals('image/jpeg', (string) $mimeType);
     }
 
-    public function testHasMimeType(): void
+    public function testIsType(): void
     {
-        $mimeType = new MimeType('image/jpeg');
+        $imageType = new MimeType('image/jpeg');
         $fontType = new MimeType('font/ttf');
 
-        $this->assertTrue($mimeType->isType('image'));
-        $this->assertFalse($mimeType->isType('video'));
+        $this->assertTrue($imageType->isType('image'));
+        $this->assertFalse($imageType->isType('video'));
 
         $this->assertTrue($fontType->isType('font'));
         $this->assertFalse($fontType->isType('image'));
+
+        // Case insensitive.
+        $this->assertTrue($fontType->isType('Font'));
+        $this->assertTrue($fontType->isType('FONT'));
+        $this->assertTrue($imageType->isType('image'));
+        $this->assertTrue($imageType->isType('IMAGE'));
     }
 }