Implement automatic MMF warning.

Tests/Medication/PrescriptionTest.cs

@@ -111,5 +111,18 @@ namespace Tests.Medication
             Assert.AreEqual("alle zwei Tage", p.Comment);
             Assert.AreEqual("Eusaprim forte\talle zwei Tage", p.ToString(), "ToString");
         }
+
+        [Test]
+        [TestCase("CellCept 500 mg", true)]
+        [TestCase("Cell CEpt 500 mg", true)]
+        [TestCase("Myfortic", true)]
+        [TestCase("Mycophenolatmofetil 500 mg", true)]
+        [TestCase("Cellophan 5 g", false)]
+        [TestCase("MMF 500 mg", true)]
+        public void MmfProperty(string drug, bool isMmf)
+        {
+            Prescription p = new Prescription(drug);
+            Assert.AreEqual(isMmf, p.IsMmf);
+        }
     }
 }