Add tests

tests/DCC/GP_DCC_Temperature_Simplified/AdministrativeData.CalibrationLaboratory.test.ts

@@ -42,6 +42,10 @@ describe("GP_DCC_Temperature_Simplified: CalibrationLaboratoryType", () => {
     expect(calibrationLaboratory.contact.phone._text).toBe(select(xpath.phone, dom));
   });
 
+  test("should get correct fax from XML", () => {
+    expect(calibrationLaboratory.contact.fax._text).toBe(select(xpath.fax, dom));
+  });
+
   test("should get correct city from XML", () => {
     // get expected list from example xml
     const expected = <Element[]>select(xpath.location.city, dom);