diff --git a/src/Symfony/Component/Console/Cursor.php b/src/Symfony/Component/Console/Cursor.php
index a6b05d8514f76..ce38c9d89f0e4 100644
--- a/src/Symfony/Component/Console/Cursor.php
+++ b/src/Symfony/Component/Console/Cursor.php
@@ -20,9 +20,12 @@ class Cursor
 {
     private $output;
 
-    public function __construct(OutputInterface $output)
+    private $input;
+
+    public function __construct(OutputInterface $output, $input = STDIN)
     {
         $this->output = $output;
+        $this->input = $input;
     }
 
     public function moveUp(int $lines = 1)
@@ -121,9 +124,9 @@ public function getCurrentPosition(): array
         $sttyMode = shell_exec('stty -g');
         shell_exec('stty -icanon -echo');
 
-        fwrite(STDIN, "\033[6n");
+        fwrite($this->input, "\033[6n");
 
-        $code = trim(fread(STDIN, 1024));
+        $code = trim(fread($this->input, 1024));
 
         shell_exec(sprintf('stty %s', $sttyMode));