diff --git a/src/Option/Type/Select.php b/src/Option/Type/Select.php
index b7f817e..406f6e0 100644
--- a/src/Option/Type/Select.php
+++ b/src/Option/Type/Select.php
@@ -91,4 +91,15 @@ class Select extends Base
         }
     }
 
+    public function getValidOptions()
+    {
+        $tmp = [];
+        /** @var Opt $opt */
+        foreach($this->getOptions() as $opt) {
+            if($opt->isValid()) $tmp[] = $opt;
+        }
+
+        return $tmp;
+    }
+
 }
\ No newline at end of file
diff --git a/tests/Customer/J/CalcTest.php b/tests/Customer/J/CalcTest.php
new file mode 100644
index 0000000..8c3792f
--- /dev/null
+++ b/tests/Customer/J/CalcTest.php
@@ -0,0 +1,48 @@
+<?php
+namespace PSC\Library\Calc\Tests\Customer\J;
+
+use PSC\Library\Calc\Article;
+use PSC\Library\Calc\Engine;
+use PSC\Library\Calc\Option\Type\Select;
+use PSC\Library\Calc\PaperContainer;
+use PSC\Library\Calc\Tests\Mock\PaperRepostory;
+
+class CalcTest extends \PHPUnit_Framework_TestCase
+{
+
+    /** @var Engine */
+    protected $engine = null;
+
+    public function setUp()
+    {
+        $repository = new PaperRepostory();
+
+        $paperContainer = new PaperContainer();
+        $paperContainer->parse(simplexml_load_string(file_get_contents(__DIR__ . '/papierContainer.xml')));
+
+        $this->engine = new Engine();
+        $this->engine->setPaperContainer($paperContainer);
+        $this->engine->setPaperRepository($repository);
+        $this->engine->setFormulas(file_get_contents(__DIR__ . '/formels.txt'));
+        $this->engine->setParameters(file_get_contents(__DIR__ . '/parameters.txt'));
+        $this->engine->setTemplates(file_get_contents(__DIR__ . '/calcTemplates.xml'));
+
+        $this->engine->loadString(file_get_contents(__DIR__ . '/calc.xml'));
+
+    }
+
+    public function tearDown()
+    {
+        $this->engine = null;
+    }
+
+    public function testIfDefaultPriceIsOk()
+    {
+
+        /** @var Select $option */
+        $option = $this->engine->getArticle()->getOptionById('auflage');
+        foreach($option->getValidOptions() as $option) {
+            $this->assertTrue($option->isValid());
+    }
+    }
+}
\ No newline at end of file
diff --git a/tests/Customer/J/calc.xml b/tests/Customer/J/calc.xml
new file mode 100644
index 0000000..8cdafe4
--- /dev/null
+++ b/tests/Customer/J/calc.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<kalkulation>
+
+    <artikel>
+        <name>Visitenkarten CCEP</name>
+        <kommentar>Visitenkarten</kommentar>
+
+
+        <option id="auflage" name="Auflage" type="Select" default="100" require="true" help="Wählen Sie hier bitte Ihre Auflage">
+            <opt id="100" name="100 Stück">
+                <auflage>
+                    <grenze pauschale="40.85">1-100</grenze>
+                </auflage>
+            </opt>
+            <opt id="200" name="200 Stück">
+                <auflage>
+                    <grenze pauschale="51.30">101-200</grenze>
+                </auflage>
+            </opt>
+            <opt id="300" name="300 Stück">
+                <auflage>
+                    <grenze pauschale="66.09">201-300</grenze>
+                </auflage>
+            </opt>
+            <opt id="400" name="400 Stück">
+                <auflage>
+                    <grenze pauschale="77.20">301-</grenze>
+                </auflage>
+            </opt>
+        </option>
+
+
+    </artikel>
+</kalkulation>
\ No newline at end of file
diff --git a/tests/Customer/J/calcTemplates.xml b/tests/Customer/J/calcTemplates.xml
new file mode 100644
index 0000000..093d936
--- /dev/null
+++ b/tests/Customer/J/calcTemplates.xml
@@ -0,0 +1,2 @@
+<root>
+</root>
diff --git a/tests/Customer/J/formels.txt b/tests/Customer/J/formels.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/Customer/J/papierContainer.xml b/tests/Customer/J/papierContainer.xml
new file mode 100644
index 0000000..8ec6de3
--- /dev/null
+++ b/tests/Customer/J/papierContainer.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<container>
+
+</container>
\ No newline at end of file
diff --git a/tests/Customer/J/parameters.txt b/tests/Customer/J/parameters.txt
new file mode 100644
index 0000000..e69de29