使用 Moq 测试.NET Core 应用

第一篇文章, 关于Mock的概念介绍: https://www.cnblogs.com/cgzl/p/9294431.html

第二篇文章, 关于方法Mock的介绍: https://www.cnblogs.com/cgzl/p/9300356.html

第三篇文章, 关于属性Mock的介绍: https://www.cnblogs.com/cgzl/p/9304567.html

第四篇文章, 关于行为Mock的介绍: https://www.cnblogs.com/cgzl/p/9306728.html

本文介绍使用Moq其它一些功能.

使用的代码: https://github.com/solenovex/Moq4-Tutorial-Code 里面的 05 Before 部分.

https://segmentfault.com/a/1190000017569492   .NET Core单元测试之搞死开发的覆盖率统计

__________________________________________________________________________________

2 3 使用 Moq 测试.NET Core 应用 -- Mock 属性

[Fact]
public void ApproveYoungCheapPlayerTransfer()
{
//递归Mock
Mock<IPhysicalExamination> mockExamination = new Mock<IPhysicalExamination>();
//使用嵌套 子
Mock<IMedicalRoomStatus> medicalRoomStatus = new Mock<IMedicalRoomStatus>();
medicalRoomStatus.Setup(x => x.IsAvailable).Returns("PASS"); //.Returns(true);
//使用嵌套 父
Mock<IMedicalRoom> medicalRoom = new Mock<IMedicalRoom>();
medicalRoom.Setup(x => x.Status).Returns(medicalRoomStatus.Object);
//使用嵌套 父父
mockExamination.Setup(x => x.MedicalRoom).Returns(medicalRoom.Object);
//mockExamination.Setup(x =>
// x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>())).Returns(true);
mockExamination.Setup(x => x.IsMedicalRoomAvailable).Returns(true);
mockExamination.Setup(x =>
x.IsHealthy(
It.Is<int>(age => age < 30),
It.IsIn<int>(80, 85, 90),
It.IsInRange<int>(75, 99, Range.Inclusive)))
.Returns(true);

var approval = new TransferApproval(mockExamination.Object);

var emreTransfer = new TransferApplication
{
PlayerName = "Emre Can",
PlayerAge = 24,
TransferFee = 0,
AnnualSalary = 4.52m,
ContractYears = 4,
IsSuperStar = false,
PlayerStrength = 80,
PlayerSpeed = 75,
};

var result = approval.Evaluate(emreTransfer);

Assert.Equal(TransferResult.Approved, result);
}

[Fact]
public void ApproveYoungCheapPlayerTransfer01()
{
//递归Mock可以为Mock对象设定默认值
Mock<IPhysicalExamination> mockExamination = new Mock<IPhysicalExamination>() {
DefaultValue= DefaultValue.Mock
};
//使用嵌套
mockExamination.Setup(x => x.MedicalRoom.Status.IsAvailable).Returns("PASS");//.Returns(true);
//mockExamination.Setup(x =>
// x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>())).Returns(true);
mockExamination.Setup(x => x.IsMedicalRoomAvailable).Returns(true);
mockExamination.Setup(x =>
x.IsHealthy(
It.Is<int>(age => age < 30),
It.IsIn<int>(80, 85, 90),
It.IsInRange<int>(75, 99, Range.Inclusive)))
.Returns(true);

var approval = new TransferApproval(mockExamination.Object);

var emreTransfer = new TransferApplication
{
PlayerName = "Emre Can",
PlayerAge = 24,
TransferFee = 0,
AnnualSalary = 4.52m,
ContractYears = 4,
IsSuperStar = false,
PlayerStrength = 80,
PlayerSpeed = 75,
};

var result = approval.Evaluate(emreTransfer);

Assert.Equal(TransferResult.Approved, result);
}

[Fact]
public void PhysicalGradeShouldPassWhenTransferringSuperStar()
{
var mockExamination = new Mock<IPhysicalExamination>
{
DefaultValue = DefaultValue.Mock
};

mockExamination.SetupAllProperties();

// 开始追踪PhysicalGrade属性
mockExamination.SetupProperty(x => x.PhysicalGrade, PhysicalGrade.Failed);

mockExamination.Setup(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>())).Returns(true);

var approval = new TransferApproval(mockExamination.Object);

var cr7Transfer = new TransferApplication
{
PlayerName = "Cristiano Ronaldo",
PlayerAge = 33,
TransferFee = 112m,
AnnualSalary = 30m,
ContractYears = 4,
IsSuperStar = true,
PlayerStrength = 90,
PlayerSpeed = 90
};

var result = approval.Evaluate(cr7Transfer);

Assert.Equal(PhysicalGrade.Passed, mockExamination.Object.PhysicalGrade);
}

[Fact]
public void ReferredToBossWhenTransferringSuperStar()
{
var mockExamination = new Mock<IPhysicalExamination>(MockBehavior.Strict);

mockExamination.SetupAllProperties();

mockExamination.Setup(x => x.MediacalRoom.Status.IsAvailable).Returns("Available");
//mockExamination.SetupProperty(x => x.PhysicalGrade, PhysicalGrade.Passed);

//追踪属性配置默认值 追踪所有属性 mockExamination.SetupAllProperties() 必须放在第一行;
//mockExamination.SetupProperty(x => x.PhysicalGrade, PhysicalGrade.Failed);

mockExamination.Setup(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>())).Returns(true);
var approval = new TransferApproval(mockExamination.Object);

var cr7Transfer = new TransferApplication
{
PlayerName = "Cristiano Ronaldo",
PlayerAge = 33,
TransferFee = 112m,
AnnualSalary = 30m,
ContractYears = 4,
IsSuperStar = true,
PlayerStrength = 90,
PlayerSpeed = 90
};

var result = approval.Evaluate(cr7Transfer);

// Assert.Equal(TransferResult.ReferredToBoss, result);
Assert.Equal(PhysicalGrade.Passed, mockExamination.Object.PhysicalGrade);
}

4 使用Moq 测试.NET Core 应用 -- Mock 行为
[Fact]
public void ShouldPhysicalExamineWhenTransferringSuperStar()
{
var mockExamination = new Mock<IPhysicalExamination>();

mockExamination.Setup(x => x.MediacalRoom.Status.IsAvailable).Returns("Available");
mockExamination.SetupProperty(x => x.PhysicalGrade, PhysicalGrade.Passed);
mockExamination.Setup(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>())).Returns(true);

var approval = new TransferApproval(mockExamination.Object);

var cr7Transfer = new TransferApplication
{
PlayerName = "Cristiano Ronaldo",
PlayerAge = 33,
TransferFee = 112m,
AnnualSalary = 30m,
ContractYears = 4,
IsSuperStar = true,
PlayerStrength = 90,
PlayerSpeed = 90
};

var result = approval.Evaluate(cr7Transfer);
result = approval.Evaluate(cr7Transfer);
// Assert.Equal(TransferResult.ReferredToBoss, result);
// mockExamination.Verify(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>())); //判断指定的事件是否执行
// mockExamination.Verify(x => x.IsHealthy(33, 95, 88), "Arguments not match !!!!"); //判断指定的事件是否执行
//mockExamination.Verify(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>()), Times.Exactly(2)); //判断指定的事件执行次数
//mockExamination.VerifyGet(x => x.MediacalRoom.Status.IsAvailable);
mockExamination.VerifySet(x => x.PhysicalGrade = PhysicalGrade.Passed);//判断PhysicalGrade属性已经被赋值了 PhysicalGrade.Passed
}

5. 使用 Moq 测试.NET Core 应用 -- 其它
[Fact]
public void PostponedWhenTransferringChildPlayer()
{
//mockExamination.Setup(x => x.IsHealthy(It.Is<int>(age => age < 16), It.IsAny<int>(), It.IsAny<int>()))
// .Throws<Exception>();
mockExamination.Setup(x => x.IsHealthy(It.Is<int>(age => age < 16), It.IsAny<int>(), It.IsAny<int>()))
.Throws(new Exception("The player is still a child"));

var childTransfer = new TransferApplication
{
PlayerName = "Some Child Player",
PlayerAge = 13,
TransferFee = 0,
AnnualSalary = 0.01m,
ContractYears = 3,
IsSuperStar = false,
PlayerStrength = 40,
PlayerSpeed = 50
};

var result = approval.Evaluate(childTransfer);

Assert.Equal(TransferResult.Postponed, result);
}

[Fact]
public void ShouldPlayerHealthCheckedWhenTransferringSuperStar()
{
//事件是否调用
mockExamination.DefaultValue = DefaultValue.Mock;
mockExamination.Setup(x => x.MediacalRoom.Status.IsAvailable).Returns("Avaliable");
mockExamination.SetupProperty(x => x.PhysicalGrade, PhysicalGrade.Passed);
mockExamination.Setup(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>()))
.Returns(true)
.Raises(x => x.HealthChecked += null, EventArgs.Empty);

//mockExamination.Setup(x => x.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>()))
// .Returns(true)
// .Raises(x => x.HealthChecked += null, EventArgs.Empty);

var cr7Transfer = new TransferApplication
{
PlayerName = "Cristiano Ronaldo",
PlayerAge = 33,
TransferFee = 112m,
AnnualSalary = 30m,
ContractYears = 4,
IsSuperStar = true,
PlayerStrength = 90,
PlayerSpeed = 90
};

var result = approval.Evaluate(cr7Transfer);

//mockExamination.Raise(x => x.HealthChecked+=null, EventArgs.Empty);

Assert.True(approval.PlayerHealthChecked);
}

[Fact]
public void ShouldPostponedWhenNotInTransferPeriod()
{
//使用没有实现接口的方法, 注意这个方法必须是 virtual
mockTransferPolicy.Setup(x => x.IsInTransferPeriod()).Returns(false);
mockTransferPolicy.Protected().Setup<bool>("IsBannedFromTransferring") //Protected() 注意 protected
//.Setup<bool>("IsBannedFromTransferring",ItExpr.IsAny<String>()) //有参数的话, 需要用到ItExpr类.
.Returns(true);

//mockTransferPolicy.Protected()
// .Setup<bool>("IsBannedFromTransferring")
// // .Setup<bool>("IsBannedFromTransferring", ItExpr.IsAny<string>())
// .Returns(true);

var cr7Transfer = new TransferApplication
{
PlayerName = "Cristiano Ronaldo",
PlayerAge = 33,
TransferFee = 112m,
AnnualSalary = 30m,
ContractYears = 4,
IsSuperStar = true,
PlayerStrength = 90,
PlayerSpeed = 90
};

var result = approval.Evaluate(cr7Transfer);
Assert.Equal(TransferResult.Postponed, result);
}

[Fact]
public void LinqToMocks()
{
//Linq to Mocks 一次性为测试Mock对象配置返回值
var mockExamination = Mock.Of<IPhysicalExamination>
(
me => me.MediacalRoom.Status.IsAvailable == "Available" &&
me.PhysicalGrade == PhysicalGrade.Passed &&
me.IsHealthy(It.IsAny<int>(), It.IsAny<int>(), It.IsAny<int>()) == true
);

var mockTransferPolicy = Mock.Of<TransferPolicyEvaluator>
(
mt => mt.IsInTransferPeriod() == false
);

approval = new TransferApproval(mockExamination, mockTransferPolicy);

var cr7Transfer = new TransferApplication
{
PlayerName = "Cristiano Ronaldo",
PlayerAge = 33,
TransferFee = 112m,
AnnualSalary = 30m,
ContractYears = 4,
IsSuperStar = true,
PlayerStrength = 90,
PlayerSpeed = 90
};

var result = approval.Evaluate(cr7Transfer);
Assert.Equal(TransferResult.Postponed, result);
}