public void Exercise01_AnimalGroupName() { Assert.AreEqual("Tower", exercises.AnimalGroupName("giraffe")); Assert.AreEqual("unknown", exercises.AnimalGroupName("")); Assert.AreEqual("unknown", exercises.AnimalGroupName("walrus")); Assert.AreEqual("Crash", exercises.AnimalGroupName("Rhino")); Assert.AreEqual("Crash", exercises.AnimalGroupName("rhino")); Assert.AreEqual("unknown", exercises.AnimalGroupName("elephants")); Assert.AreEqual("unknown", exercises.AnimalGroupName(null)); }