diff --git a/.github/workflows/phpstan.yml b/.github/workflows/phpstan.yml
new file mode 100644
index 0000000..71e81d9
--- /dev/null
+++ b/.github/workflows/phpstan.yml
@@ -0,0 +1,14 @@
+name: PHPStan (Static Analysis)
+
+on: [push]
+
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: php-actions/composer@v6 # or alternative dependency management
+      - uses: php-actions/phpstan@v3
+        with:
+          path: src/
diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
new file mode 100644
index 0000000..40f6292
--- /dev/null
+++ b/.github/workflows/phpunit.yml
@@ -0,0 +1,17 @@
+name: PHPUnit (Unit Tests)
+
+on: [push]
+
+jobs:
+  build-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: php-actions/composer@v6 # or alternative dependency management
+
+      - name: Install QPDF & Run PHPUnit
+        run: |
+          sudo apt install -y qpdf
+          vendor/bin/phpunit --color=always
\ No newline at end of file
diff --git a/src/Pdf.php b/src/Pdf.php
index 087feb8..c178604 100644
--- a/src/Pdf.php
+++ b/src/Pdf.php
@@ -115,6 +115,14 @@ public function getPages()
         return $this->pages;
     }
 
+    private function checkFolderIfExists($target)
+    {
+        $folder = dirname($target);
+        if (!empty($folder) && $folder !== '.' && !file_exists($folder)) {
+            mkdir($folder);
+        }
+    }
+
     /**
      * Merge all added pages in the object into a single output file.
      *
@@ -124,6 +132,11 @@ public function getPages()
      */
     public function merge($target)
     {
+        if (empty($target)) {
+            return false;
+        }
+        $this->checkFolderIfExists($target);
+
         $cmd = $this->getCommand();
         $cmd->addArg('--empty', null, false);
         $cmd->addArg('--pages', $this->pages);
@@ -148,6 +161,11 @@ public function split($target, $pagesPerGroup=1)
             throw new \Exception("Error! Currently unable to split when more than one PDF file is specified.");
         }
 
+        if (empty($target)) {
+            return false;
+        }
+        $this->checkFolderIfExists($target);
+
         $cmd = $this->getCommand();
         $cmd->addArg('--split-pages=', $pagesPerGroup, false);
         $cmd->addArg('', $this->pages, false);
@@ -180,6 +198,11 @@ public function rotate($target, $direction='+90', $pageString=null)
             throw new \Exception("Error! Currently unable to rotate when more than one PDF file is specified.");
         }
 
+        if (empty($target)) {
+            return false;
+        }
+        $this->checkFolderIfExists($target);
+
         $cmd = $this->getCommand();
         $cmd->addArg('--rotate=', $rotationCmd, false);
         $cmd->addArg('', $this->pages, false);
diff --git a/tests/PdfTest.php b/tests/PdfTest.php
index d000126..f4f2f3b 100644
--- a/tests/PdfTest.php
+++ b/tests/PdfTest.php
@@ -23,33 +23,44 @@ public function testGetVersion()
     public function testMerge()
     {
         $pdf = new Pdf();
+
         $pdf->addPage(__DIR__ . "/files/TestPdf.pdf");
         $pdf->addPage(__DIR__ . "/files/TestPdf2.pdf");
-        $pdf->merge(__DIR__ . "/output/test-merge.pdf");
+
+        $result = $pdf->merge(__DIR__ . "/output/test-merge.pdf");
+        $this->assertTrue($result);
         $this->assertEmpty($pdf->getError());
     }
 
     public function testSplit()
     {
         $pdf = new Pdf();
+
         $pdf->addPage(__DIR__ . "/files/TestPdfTwoPage.pdf");
-        $pdf->split(__DIR__."/output/test-split.pdf");
+
+        $result = $pdf->split(__DIR__."/output/test-split.pdf");
+        $this->assertTrue($result);
         $this->assertEmpty($pdf->getError());
     }
 
     public function testRotate()
     {
         $pdf = new Pdf();
+
         $pdf->addPage(__DIR__ . "/files/TestPdfTwoPage.pdf");
-        $pdf->rotate(__DIR__ . "/output/rotated.pdf", "+90", "1");
+
+        $result = $pdf->rotate(__DIR__ . "/output/rotated.pdf", "+90", "1");
+        $this->assertTrue($result);
         $this->assertEmpty($pdf->getError());
     }
 
     public function testGetPageCount()
     {
         $pdf = new Pdf();
+
         $pdf->addPage(__DIR__ . "/files/TestPdfTwoPage.pdf");
         $pdf->addPage(__DIR__ . "/files/TestPdf.pdf");
+
         $count = $pdf->getPageCount();
         $this->assertEmpty($pdf->getError());
         $this->assertEquals(3, $count);