--- /dev/null
+--TEST--
+"abs" filter
+--TEMPLATE--
+{{ (-5.5)|abs }}
+{{ (-5)|abs }}
+{{ (-0)|abs }}
+{{ 0|abs }}
+{{ 5|abs }}
+{{ 5.5|abs }}
+{{ number1|abs }}
+{{ number2|abs }}
+{{ number3|abs }}
+{{ number4|abs }}
+{{ number5|abs }}
+{{ number6|abs }}
+--DATA--
+return array('number1' => -5.5, 'number2' => -5, 'number3' => -0, 'number4' => 0, 'number5' => 5, 'number6' => 5.5)
+--EXPECT--
+5.5
+5
+0
+0
+5
+5.5
+5.5
+5
+0
+0
+5
+5.5