diff --git a/src/Rotation.php b/src/Rotation.php
index 3d94791..bd286c6 100644
--- a/src/Rotation.php
+++ b/src/Rotation.php
@@ -154,6 +154,10 @@ private function sucessfull(string $filenameSource, ?string $filenameRotated): v
      */
     private function canRotate(string $filename): bool
     {
+        if (!is_file($filename)) {
+            return false;
+        }
+
         if (!$this->fileIsValid($filename)) {
             $this->exception(
                 new Exception(sprintf('the file %s not is valid.', $filename), 10)
@@ -176,9 +180,9 @@ private function initProcessorFile(string $filename): void
     /**
      * check if file is valid to rotate.
      */
-    private function fileIsValid(?string $filename): bool
+    private function fileIsValid(string $filename): bool
     {
-        return $filename && is_file($filename) && is_writable($filename);
+        return is_writable($filename);
     }
 
     /**
diff --git a/tests/ErrorHandlerTest.php b/tests/ErrorHandlerTest.php
index 9b754fa..825e684 100644
--- a/tests/ErrorHandlerTest.php
+++ b/tests/ErrorHandlerTest.php
@@ -13,6 +13,9 @@ public function testThrowsException()
 
         $rotation = new Rotation();
 
+        touch(self::DIR_WORK.'/file.log');
+        chmod(self::DIR_WORK.'/file.log', 0444);
+
         $result = $rotation->rotate(self::DIR_WORK.'file.log');
 
         $this->assertFalse($result);
@@ -22,6 +25,9 @@ public function testCatchException()
     {
         $rotation = new Rotation();
 
+        touch(self::DIR_WORK.'/file.log');
+        chmod(self::DIR_WORK.'/file.log', 0444);
+
         $result = $rotation
             ->catch(function (RotationFailed $exception) {
                 $this->assertEquals(
diff --git a/tests/RotationTest.php b/tests/RotationTest.php
index 0d04162..5aaf5e7 100644
--- a/tests/RotationTest.php
+++ b/tests/RotationTest.php
@@ -2,16 +2,12 @@
 
 namespace Cesargb\Log\Test;
 
-use Exception;
 use Cesargb\Log\Rotation;
-use Cesargb\Log\Test\TestCase;
 
 class RotationTest extends TestCase
 {
-    public function test_log_rotating_if_file_not_exists()
+    public function testLogRotatingIfFileNotExists()
     {
-        $this->expectException(Exception::class);
-
         $rotation = new Rotation();
 
         $result = $rotation->rotate(self::DIR_WORK.'file.log');
@@ -19,7 +15,7 @@ public function test_log_rotating_if_file_not_exists()
         $this->assertFalse($result);
     }
 
-    public function test_not_rotate_if_file_is_empty()
+    public function testNotRotateIfFileIsEmpty()
     {
         touch(self::DIR_WORK.'file.log');
 
@@ -32,7 +28,7 @@ public function test_not_rotate_if_file_is_empty()
         $this->assertFileDoesNotExist(self::DIR_WORK.'file.log.1');
     }
 
-    public function test_option_nocompress()
+    public function testOptionNocompress()
     {
         file_put_contents(self::DIR_WORK.'file.log', microtime(true));
 
@@ -45,7 +41,7 @@ public function test_option_nocompress()
         $this->assertFileExists(self::DIR_WORK.'file.log.1');
     }
 
-    public function test_option_compress()
+    public function testOptionCompress()
     {
         file_put_contents(self::DIR_WORK.'file.log', microtime(true));
 
@@ -56,7 +52,7 @@ public function test_option_compress()
         $this->assertFileExists(self::DIR_WORK.'file.log.1.gz');
     }
 
-    public function test_option_files()
+    public function testOptionFiles()
     {
         $maxFiles = 5;
 
@@ -74,10 +70,9 @@ public function test_option_files()
         }
 
         $this->assertFileDoesNotExist(self::DIR_WORK.'file.log.'.($maxFiles + 1));
-
     }
 
-    public function test_option_files_only_one()
+    public function testOptionFilesOnlyOne()
     {
         $filesToCreate = 5;
 
@@ -95,7 +90,7 @@ public function test_option_files_only_one()
         $this->assertFileDoesNotExist(self::DIR_WORK.'file.log.2');
     }
 
-    public function test_option_minsize()
+    public function testOptionMinsize()
     {
         file_put_contents(self::DIR_WORK.'file.log', microtime(true));