测试 Employee Class 已分配和派生的属性

此示例在单元测试中提供了更多测试。

Employee.vb （类库）

''' <summary>
''' Employee Class
''' </summary>
Public Class Employee

    ''' <summary>
    ''' First name of employee
    ''' </summary>
    Public Property FirstName As String = ""

    ''' <summary>
    ''' Last name of employee
    ''' </summary>
    Public Property LastName As String = ""

    ''' <summary>
    ''' Full name of employee
    ''' </summary>
    Public ReadOnly Property FullName As String = ""

    ''' <summary>
    ''' Employee's age
    ''' </summary>
    Public Property Age As Byte

    ''' <summary>
    ''' Instantiate new instance of employee
    ''' </summary>
    ''' <param name="firstName">Employee first name</param>
    ''' <param name="lastName">Employee last name</param>
    Public Sub New(firstName As String, lastName As String, dateofbirth As Date)
        Me.FirstName = firstName
        Me.LastName = lastName
        FullName = Me.FirstName + " " + Me.LastName
        Age = Convert.ToByte(Date.Now.Year - dateofbirth.Year)
    End Sub
End Class

EmployeeTest.vb （测试项目）

Imports HumanResources

<TestClass()>
Public Class EmployeeTests
    ReadOnly _person1 As New Employee("Waleed", "El-Badry", New DateTime(1980, 8, 22))
    ReadOnly _person2 As New Employee("Waleed", "El-Badry", New DateTime(1980, 8, 22))

    <TestMethod>
    Public Sub TestFirstName()
        Assert.AreEqual("Waleed", _person1.FirstName, "First Name Mismatch")
    End Sub

    <TestMethod>
    Public Sub TestLastName()
        Assert.AreNotEqual("", _person1.LastName, "No Last Name Inserted!")
    End Sub

    <TestMethod>
    Public Sub TestFullName()
        Assert.AreEqual("Waleed El-Badry", _person1.FullName, "Error in concatination of names")
    End Sub

    <TestMethod>
    Public Sub TestAge()
        Assert.Fail("Age is not even tested !") 'Force test to fail !
        Assert.AreEqual(Convert.ToByte(36), _person1.Age)
    End Sub

    <TestMethod>
    Public Sub TestObjectReference()
        Assert.AreSame(_person1.FullName, _person2.FullName, "Different objects with same data")
    End Sub
End Class

运行测试后的结果