diff --git a/tst/Bootstrap.php b/tst/Bootstrap.php
index 28b56422..8d8e61c6 100644
--- a/tst/Bootstrap.php
+++ b/tst/Bootstrap.php
@@ -238,6 +238,17 @@ class Helper
         return json_encode(self::getCommentPost());
     }
 
+    /**
+     * Returns 16 random hexadecimal characters.
+     *
+     * @return string
+     */
+    public static function getRandomId()
+    {
+        // 8 binary bytes are 16 characters long in hex
+        return bin2hex(random_bytes(8));
+    }
+
     /**
      * delete directory and all its contents recursively
      *
diff --git a/tst/Data/FilesystemTest.php b/tst/Data/FilesystemTest.php
index 390cb66d..1e4f2b93 100644
--- a/tst/Data/FilesystemTest.php
+++ b/tst/Data/FilesystemTest.php
@@ -141,9 +141,7 @@ class FilesystemTest extends TestCase
         $commentid = Helper::getCommentId();
         $ids       = array();
         for ($i = 0, $max = 10; $i < $max; ++$i) {
-            // PHPs mt_rand only supports 32 bit or up 0x7fffffff on 64 bit systems to be precise :-/
-            $dataid = str_pad(dechex(mt_rand(0, mt_getrandmax())), 8, '0', STR_PAD_LEFT) .
-                str_pad(dechex(mt_rand(0, mt_getrandmax())), 8, '0', STR_PAD_LEFT);
+            $dataid = Helper::getRandomId();
             $storagedir = $this->_path . DIRECTORY_SEPARATOR . substr($dataid, 0, 2) .
                 DIRECTORY_SEPARATOR . substr($dataid, 2, 2) . DIRECTORY_SEPARATOR;
             $ids[$dataid] = $storagedir;
diff --git a/tst/RequestTest.php b/tst/RequestTest.php
index 2207fa7e..eb22655f 100644
--- a/tst/RequestTest.php
+++ b/tst/RequestTest.php
@@ -12,18 +12,6 @@ class RequestTest extends TestCase
         $_POST   = array();
     }
 
-    /**
-     * Returns 16 random hexadecimal characters.
-     *
-     * @access public
-     * @return string
-     */
-    public function getRandomId()
-    {
-        // 8 binary bytes are 16 characters long in hex
-        return bin2hex(random_bytes(8));
-    }
-
     /**
      * Returns random query safe characters.
      *
@@ -54,7 +42,25 @@ class RequestTest extends TestCase
     public function testRead()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
+        $_SERVER['REQUEST_METHOD'] = 'GET';
+        $_SERVER['QUERY_STRING']   = $id;
+        $_GET[$id]                 = '';
+        $request                   = new Request;
+        $this->assertFalse($request->isJsonApiCall(), 'is HTML call');
+        $this->assertEquals($id, $request->getParam('pasteid'));
+        $this->assertEquals('read', $request->getOperation());
+    }
+
+    /**
+     * paste IDs are 8 bytes hex encoded strings, if unlucky, this turns into
+     * a numeric string that PHP will cast to an int, for example in array keys
+     * @see https://www.php.net/manual/en/language.types.array.php
+     */
+    public function testReadNumeric()
+    {
+        $this->reset();
+        $id                        = '1234567812345678';
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['QUERY_STRING']   = $id;
         $_GET[$id]                 = '';
@@ -67,7 +73,7 @@ class RequestTest extends TestCase
     public function testDelete()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_GET['pasteid']           = $id;
         $_GET['deletetoken']       = 'bar';
@@ -110,7 +116,7 @@ class RequestTest extends TestCase
     public function testApiRead()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['HTTP_ACCEPT']    = 'application/json, text/javascript, */*; q=0.01';
         $_SERVER['QUERY_STRING']   = $id;
@@ -124,7 +130,7 @@ class RequestTest extends TestCase
     public function testApiDelete()
     {
         $this->reset();
-        $id                               = $this->getRandomId();
+        $id                               = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD']        = 'POST';
         $_SERVER['HTTP_X_REQUESTED_WITH'] = 'JSONHttpRequest';
         $_SERVER['QUERY_STRING']          = $id;
@@ -155,7 +161,7 @@ class RequestTest extends TestCase
     public function testReadWithNegotiation()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['HTTP_ACCEPT']    = 'text/html,text/html; charset=UTF-8,application/xhtml+xml, application/xml;q=0.9,*/*;q=0.8, text/csv,application/json';
         $_SERVER['QUERY_STRING']   = $id;
@@ -169,7 +175,7 @@ class RequestTest extends TestCase
     public function testReadWithXhtmlNegotiation()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['HTTP_ACCEPT']    = 'application/xhtml+xml,text/html,text/html; charset=UTF-8, application/xml;q=0.9,*/*;q=0.8, text/csv,application/json';
         $_SERVER['QUERY_STRING']   = $id;
@@ -183,7 +189,7 @@ class RequestTest extends TestCase
     public function testApiReadWithNegotiation()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['HTTP_ACCEPT']    = 'text/plain,text/csv, application/xml;q=0.9, application/json, text/html,text/html; charset=UTF-8,application/xhtml+xml, */*;q=0.8';
         $_SERVER['QUERY_STRING']   = $id;
@@ -197,7 +203,7 @@ class RequestTest extends TestCase
     public function testReadWithFailedNegotiation()
     {
         $this->reset();
-        $id                        = $this->getRandomId();
+        $id                        = Helper::getRandomId();
         $_SERVER['REQUEST_METHOD'] = 'GET';
         $_SERVER['HTTP_ACCEPT']    = 'text/plain,text/csv, application/xml;q=0.9, */*;q=0.8';
         $_SERVER['QUERY_STRING']   = $id;
@@ -211,7 +217,7 @@ class RequestTest extends TestCase
     public function testPasteIdExtraction()
     {
         $this->reset();
-        $id              = $this->getRandomId();
+        $id              = Helper::getRandomId();
         $queryParams     = array($id);
         $queryParamCount = random_int(1, 5);
         for ($i = 0; $i < $queryParamCount; ++$i) {