TestContext.DataRow 属性
当在派生类中重写时，如果测试用于数据驱动测试，则获取当前数据行。
命名空间： Microsoft.VisualStudio.TestTools.UnitTesting
程序集： Microsoft.VisualStudio.QualityTools.UnitTestFramework（在 Microsoft.VisualStudio.QualityTools.UnitTestFramework.dll 中）
语法
声明
Public MustOverride ReadOnly Property DataRow As DataRow
public abstract DataRow DataRow { get; }
public:
virtual property DataRow^ DataRow {
DataRow^ get () abstract;
}
abstract DataRow : DataRow with get
abstract function get DataRow () : DataRow
属性值
类型：System.Data.DataRow
DataRow 对象。
备注
DataRow 属性按列返回当前行的值。这将返回按列标识的数据。列是按名称（如以下示例所示）或按索引位置标识的。对于下面的示例节中所显示的示例数据表，索引标识符 DataRow[0] 将返回 Table1 中“Name”列的值。
示例
下面的代码包含要测试的类和方法。
using System;
namespace BankAccountNS
{
public class BankAccount
{
private string m_customerName;
private double m_balance;
public BankAccount(string customerName, double balance)
{
m_customerName = customerName;
m_balance = balance;
}
public double Balance
{ get { return m_balance; } }
public void Debit(double amount)
{
if (amount < 0)
throw new ArgumentOutOfRangeException("amount");
m_balance -= amount;
}
}
}
Imports System
Namespace BankAccountNS
Public Class BankAccount
Private m_customerName As String
Private m_balance As Double
Public Sub New(ByVal customerName As String, ByVal balance As Double)
m_customerName = customerName
m_balance = balance
End Sub
Public ReadOnly Property Balance() As Double
Get
Return m_balance
End Get
End Property
Public Sub Debit(ByVal amount As Double)
If amount < 0 Then
Throw New ArgumentOutOfRangeException("amount")
End If
m_balance -= amount
End Sub
End Class
End Namespace
下面的测试将会通过。它使用包含 Table1 的 sample.mdb Access 数据库，其中 Table1 包含以下数据。
名称 |
Balance |
金额 |
|---|---|---|
Becky |
100 |
25 |
John |
70 |
60 |
Larry |
75 |
71.25 |
Stephanie |
159 |
158 |
Mr.Bryan Walton |
11.99 |
11.22 |
using Microsoft.VisualStudio.TestTools.UnitTesting;
using BankAccountNS;
using System;
namespace TestProject1
{
[TestClass()]
public class BankAccountTest
{
private TestContext testContextInstance;
public TestContext TestContext
{
get { return testContextInstance; }
set { testContextInstance = value; }
}
[TestMethod()]
[DataSource("System.Data.OleDb",
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\"D:\\sample.mdb\"",
"Table1",
DataAccessMethod.Sequential)]
public void DebitTest()
{
string customerName = testContextInstance.DataRow["Name"].ToString();
double balance = Convert.ToDouble(testContextInstance.DataRow["Balance"]);
double amount = Convert.ToDouble(testContextInstance.DataRow["Amount"]);
double newBalance = balance - amount;
BankAccount target = new BankAccount(customerName, balance);
target.Debit(amount);
Assert.AreEqual(newBalance, target.Balance, .00);
}
}
}
Imports Microsoft.VisualStudio.TestTools.UnitTesting
Imports BankAccountNS
Imports System
Namespace TestProject1
<TestClass()> _
Public Class BankAccountTest
Private testContextInstance As TestContext
Public Property TestContext() As TestContext
Get
Return testContextInstance
End Get
Set(ByVal Value As TestContext)
testContextInstance = Value
End Set
End Property
<TestMethod()> _
<DataSource("System.Data.OleDb", _
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=""D:\ sample.mdb""", _
"Table1", DataAccessMethod.Sequential)> _
Public Sub DebitTest()
Dim customerName As String = testContextInstance.DataRow("Name").ToString()
Dim balance As Double = Convert.ToDouble(testContextInstance.DataRow("Balance"))
Dim amount As Double = Convert.ToDouble(testContextInstance.DataRow("Amount"))
Dim NewBalance As Double = balance - amount
Dim target As BankAccount = New BankAccount(customerName, balance)
target.Debit(amount)
Assert.AreEqual(NewBalance, target.Balance, 0.0)
End Sub
End Class
End Namespace
.NET Framework 安全性
- 对直接调用方的完全信任。此成员不能由部分信任的代码使用。有关更多信息，请参见通过部分受信任的代码使用库。
请参见
参考
Microsoft.VisualStudio.TestTools.UnitTesting 命名空间