Fixes

src/Engine.php

@@ -37,6 +37,9 @@ class Engine
     /** @var float */
     protected $price = 0;
 
+    /** @var float */
+    protected $tax = 0;
+
     /** @var bool */
     protected $dirty = true;
 
@@ -224,6 +227,17 @@ class Engine
         return round($this->price,2);
     }
 
+    /**
+     * @return mixed
+     */
+    public function getTaxPrice()
+    {
+        if($this->dirty) {
+            $this->calc();
+        }
+        return round($this->price+($this->price/100*$this->tax),2);
+    }
+
     /**
      * @param mixed $price
      */
@@ -253,4 +267,20 @@ class Engine
         $this->variables[$var] = $value;
     }
 
+    /**
+     * @return float
+     */
+    public function getTax()
+    {
+        return $this->tax;
+    }
+
+    /**
+     * @param float $tax
+     */
+    public function setTax($tax)
+    {
+        $this->tax = $tax;
+    }
+
 }

tests/Calc/PriceMinTest.php

@@ -33,6 +33,8 @@ class PriceMinTest extends \PHPUnit_Framework_TestCase
         $this->engine->calc();
 
         $this->assertEquals(2500, $this->engine->getPrice());
+        $this->engine->setTax(19);
+        $this->assertEquals(2975, $this->engine->getTaxPrice());
     }
 
     public function testIfCalcReturnsGrenzeWithFormular()