+ Test for division by zero

tests/MathTest.php

@@ -27,6 +27,12 @@ class MathTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals($calculator->execute($expression), $phpResult);
     }
 
+    public function testZeroDevision()
+    {
+        $calculator = new MathExecutor();
+        $this->assertEquals($calculator->execute('1 / 0'), 0);
+    }
+
     /**
      * Expressions data provider
      */
@@ -62,4 +68,4 @@ class MathTest extends \PHPUnit_Framework_TestCase
             array('100500 * 3.5E-5')
         );
     }
-}
+}