public void NewCoolantModelHasBlankTypeTest()
    {
        CoolantModel model    = new CoolantModel();
        string       expected = "";

        Assert.AreEqual(expected, model.GetCoolantType());
    }
    public void NewCoolantWithTypeShouldHaveThatTypeTest()
    {
        string       type  = "test-type";
        CoolantModel model = new CoolantModel(type);

        Assert.AreEqual(type, model.GetCoolantType());
    }
    public void SetCoolantTypeShouldSetCoolantTypeTest()
    {
        string type1       = "test-type-1",
               type2       = "test-type-2";
        CoolantModel model = new CoolantModel(type1);

        model.SetCoolantType(type2);
        Assert.AreEqual(type2, model.GetCoolantType());
    }