Nunit使用(三)

一对SetUp、TearDown可以达到测试隔离性的目的，SetUp确保共享的资源在每个测试运行前正确初始化，TearDown确保释放运行测试占用的资源等，TestFixtureSetUp、TestFixtureTearDown提供了同样的目的，但是生命周期为整个测试过程，也可节约测试资源

using System; using System.Collections.Generic; using System.Linq; using System.Text; using NUnit.Framework; using BasicSynx; namespace NunitQuickStart { //作为一个测试的类，必须满足：1.必须是public 2.必须有一个缺省构造函数 3.构造函数没有副作用 /// <summary> /// 使用TestFixture标记类，使用Test标记方法 /// </summary> [TestFixture] //标记一个类包含测试 public class NumberFixture { //作为测试的方法，必须满足：1.必须是public 2.不能有参数 3.没有返回值 [Test] //标记一个类的某个方法是可以测试的 public void AddTwoNumbers() { int a = 3; int b = 5; int sum = a + b; Assert.AreEqual(sum, 8); } [Test] public void MultiplyTwoNumbers() { int a = 3; int b = 5; int multiply = a * b; Assert.AreEqual(multiply, 15); } } /// <summary> /// 使用SetUp提取共用方法，Ignore忽略方法，ExpectedException预期的异常类型，Category用于Nunit分类 /// </summary> [TestFixture] public class NumberFixture2 { private int a; private int b; [SetUp] //SetUp初始化，TearDown释放资源 public void InitOperate() { a = 3; b = 5; } [Test] [Category("Number")] public void AddTwoNumbers() { int sum = a + b; Assert.AreEqual(sum, 8); } [Test] [Category("Ignore")] [Ignore("Multiplication is ignored, can't be excuted forever!")] //忽略当前运行方法，当一些代码还没完成不想参与测试，若Ignore加在类上，则忽略该类下的所有方法 public void MultiplyTwoNumbers() { int multiply = a * b; Assert.AreEqual(multiply, 15); Console.WriteLine("Igonred method"); } [Test] [Explicit("当使用Ignore时方法被忽略则无法被调用执行，但是又有可能要调用，使用Explicit可以允许显示调用")] [Category("Exception")] [ExpectedException(typeof(DivideByZeroException))] //捕捉预期的异常类型，经常用于验证边界条件。若发生了预期的异常类型则测试通过 public void DivideByZero() { int zero = 0; int infinity = a / zero; Assert.Fail("Should have gotten an exception"); } /// <summary> /// 测试值类型，引用类型 /// </summary> [Test] public void RefValType() { TestValRefType vrType = new TestValRefType(); int rtnValue = vrType.testType(); Assert.AreEqual(rtnValue, 10); } } /// <summary> /// 测试生命周期合约 /// SetUp/TearDown在每个方法的前后调用，TestFixtureSetUp/TestFixtureTearDown在整个测试期间被调用一次 /// </summary> public class DatabaseFixture { [TestFixtureSetUp] //为整个测试初始化一次 public void OpenConnection() { //open the connnection to the db Console.WriteLine("OpenConnection"); } [TestFixtureTearDown] //为整个测试释放资源一次 public void CloseConnection() { //close the connnection to the db Console.WriteLine("CloseConnection"); } [SetUp] public void CreateDatabaseObjects() { //insert the records into the db table Console.WriteLine("CreateDatabaseObjects"); } [TearDown] public void DeleteDatabaseObjects() { //remove the inserted records from the db table Console.WriteLine("DeleteDatabaseObjects"); } [Test] public void ReadManyObjects() { //load many records using the open db connection Console.WriteLine("ReadManyObjects"); } [Test] public void ReadOneObject() { //load one records using the open db connnection Console.WriteLine("ReadOneObject"); } } }

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