??α?д?????????????

    ????????8?????????????ζ??????????FirstName??????????????????????????????????????????????????????б??????????????????????ζ???????????????????????????????????????????????????ChangeAssert?????????HasErrors?????
   
    [TestMethod]
    public void Person_FirstName_Set_Nothing_Unexpected_Changed????
   
    {
   
    var person = new Person??"Adam"?? "Smith"????
   
    var changeAssert = new ChangeAssert??person????
   
    person.FirstName = "Bob";
   
    changeAssert.AssertOnlyChangesAre??"FirstName"?? "FullName"?? "IsChanged"????
   
    }
   
    ChangeAssert????????????????????????????????????????????????????????????????????
   
    ????????????????????????????????????????к????????
   
    ??????"???"??????????
   
    ??8?????????????????FirstName?????"Adam"????"Bob"????????????????????????????????LastName???null??????????????????????????????????嵥??
   
    ??FirstName??????"Adam"
   
    ??FirstName??????null
   
    ??FirstName ??????
   
    ????LastName??null??????￡????case1-3
   
    ????LastName ??????????￡????case1-3
   
    ????FirstName???null?????????￡????case1-5
   
    ????FirstName??????????????￡????case1-5
   
    ???????????27?????????????????????????8???????????????????????????????????????216????????????????·???????????????δ???????????????????
   
    ??????д???ζ??
   
    ??????????????????8??????????????????????ú???????????????д??????????????????????????ζ???????????????????????е??????????????????ζ????
   
    ??Duplicated code
   
    ??????????
   
    ??Excessively long identifiers
   
    ???????????
   
    ????????????????????????????????????????????????ζ????
   
    [TestMethod]
   
    public void Person_FirstName_Set????
   
    {
   
    var person = new Person??"Adam"?? "Smith"????
   
    var eventAssert = new PropertyChangedEventAssert??person????
   
    var errorsChangedAssert = new ErrorsChangedEventAssert??person????
   
    var changeAssert = new ChangeAssert??person????
   
    person.FirstName = "Bob";
   
    Assert.AreEqual??"Bob"?? person.FirstName?? "FirstName setter failed"????
   
    Assert.AreEqual??"Bob Smith"?? person.FullName?? "FullName not updated with FirstName changed"????
   
    Assert.IsTrue??person.IsChanged?? "IsChanged flag was not set when FirstName changed"????
   
    eventAssert.Expect??"IsChanged"????
   
    eventAssert.Expect??"FirstName"????
   
    eventAssert.Expect??"FullName"????
   
    errorsChangedAssert.ExpectNothing??"Expected no ErrorsChanged events"????
   
    changeAssert.AssertOnlyChangesAre??"FirstName"?? "FullName"?? "IsChanged"????
   
    }
   
    ????????2?????????????????????????????????????????
   
    ???????????????
   
    ?????27?????????????????????????FirstName?null???????????????????????????????????????
   
    [TestMethod]
    public void Person_FirstName_Set_Empty????
   
    {
   
    Person_FirstName_Set_Invalid??String.Empty????
   
    }
   
    [TestMethod]
    public void Person_FirstName_Set_Null????
   
    {
   
    Person_FirstName_Set_Invalid??null????
   
    }
   
    public void Person_FirstName_Set_Invalid??string firstName??
   
    {
   
    var person = new Person??"Adam"?? "Smith"????
   
    var eventAssert = new PropertyChangedEventAssert??person????
   
    var errorsChangedAssert = new ErrorsChangedEventAssert??person????
   
    var changeAssert = new ChangeAssert??person????
   
    Assert.IsFalse??person.IsChanged?? "Test setup failed?? IsChanged is not false"????
   
    Assert.AreEqual??"Adam"?? person.FirstName?? "Test setup failed?? FirstName is not Adam"????
   
    Assert.AreEqual??"Smith"?? person.LastName?? "Test setup failed?? LastName is not Smith"????
   
    person.FirstName = firstName;
   
    Assert.AreEqual??firstName ?? person.FirstName?? "FirstName setter failed"????
   
    Assert.AreEqual??"Smith"?? person.FullName?? "FullName not updated with FirstName changed"????
   
    Assert.IsTrue??person.IsChanged?? "IsChanged flag was not set when FirstName changed"????
   
    eventAssert.Expect??"IsChanged"????
   
    eventAssert.Expect??"FirstName"????
   
    eventAssert.Expect??"FullName"????
   
    Assert.IsTrue??person.HasErrors?? "HasErrors should have remained false"????
   
    errorsChangedAssert.ExpectCountEquals??1?? "Expected an ErrorsChanged event"????
   
    changeAssert.AssertOnlyChangesAre??"FirstName"?? "FullName"?? "IsChanged"?? "HasErrors"????
   
    }
   
    ???????Person_FirstName_Set??Person_FirstName_Set_Invalid??????С???????????????????????
   
    [TestMethod]
   
    public void Person_FirstName_Set_Valid????
   
    {
   
    Person_FirstName_Set??"Bob"?? false????
   
    }
   
    [TestMethod]
    
    public void Person_FirstName_Set_Empty????
   
    {
   
    Person_FirstName_Set??String.Empty?? true????
   
    }
   
    [TestMethod]
   
     public void Person_FirstName_Set_Null????
   
    {
   
    Person_FirstName_Set??null?? true????
   
    }
   
    public void Person_FirstName_Set??string firstName?? bool shouldHaveErrors??
   
    {
   
    var person = new Person??"Adam"?? "Smith"????
   
    var eventAssert = new PropertyChangedEventAssert??person????
   
    var errorsChangedAssert = new ErrorsChangedEventAssert??person????
   
    var changeAssert = new ChangeAssert??person????
   
    Assert.IsFalse??person.IsChanged?? "Test setup failed?? IsChanged is not false"????
   
    Assert.AreEqual??"Adam"?? person.FirstName?? "Test setup failed?? FirstName is not Adam"????
   
    Assert.AreEqual??"Smith"?? person.LastName?? "Test setup failed?? LastName is not Smith"????
   
    person.FirstName = firstName;
   
    Assert.AreEqual??firstName?? person.FirstName?? "FirstName setter failed"????
   
    Assert.AreEqual????firstName + " Smith"????Trim?????? person.FullName?? "FullName not updated with FirstName changed"????
   
    Assert.AreEqual??true?? person.IsChanged?? "IsChanged flag was not set when FirstName changed"????
   
    eventAssert.Expect??"IsChanged"????
   
    eventAssert.Expect??"FirstName"????
   
    eventAssert.Expect??"FullName"????
   
    if ??shouldHaveErrors??
   
    {
   
    Assert.IsTrue??person.HasErrors?? "HasErrors should have remained false"????
   
    errorsChangedAssert.ExpectCountEquals??1?? "Expected an ErrorsChanged event"????
   
    changeAssert.AssertOnlyChangesAre??"FirstName"?? "FullName"?? "IsChanged"?? "HasErrors"????
   
    }
   
    else
   
    {
   
    errorsChangedAssert.ExpectNothing??"Expected no ErrorsChanged events"????
   
    changeAssert.AssertOnlyChangesAre??"FirstName"?? "FullName"?? "IsChanged"????
   
    }
   
    }