Trying with Mocking in Unit test case

Question

I am trying with Simple Multiplication application ,

public virtual int Multi(int a, int b) { return a * b; }

I am trying to Mock it using Moq. But in the

namespace UnitTestProject1 { [TestClass] public class UnitTest1 { [TestMethod] public void TestMethod1() { int a = 5; int b = 10; Mock<WebForm1> Titi = new Mock<WebForm1>(); // WebForm1 obj = new WebForm1(); //int Real= obj.Multi(a, b); // Titi.Setup(x => x.data()).Returns(true); Titi.CallBase = true; var data= Titi.Setup(x => x.Multi(a, b)).Returns(50); Assert.AreEqual(true, Titi.Object); //Assert.AreEqual(50, Titi.Object); } } }

Where as in the Mocking output I am getting

Assert.AreEqual failed. Expected:<True (System.Boolean)>. Actual:<Castle.Proxies.WebForm1Proxy (Castle.Proxies.WebForm1Proxy)>

It means the actual & Expected are not matching, But why I am getting this error? where as it's a simple logic.

Nkosi · Accepted Answer · 2016-08-08 13:33:18Z

You are not using the mock correctly

[TestMethod] public void TestMethod1() { int a = 5; int b = 10; int expected = 50; Mock<WebForm1> mockWebForm = new Mock<WebForm1>(); mockWebForm.Setup(x => x.Multi(a, b)).Returns(expected); var webForm = mockWebForm.Object; var data = webForm.Multi(a, b); Assert.AreEqual(50, data); }

Normally mocks are used for dependencies.

for example say you have

public interface IMultiply { int Multiply(int a, int b); }

and your web form depends on that interface

public class WebForm1 { IMultiply multiplier; public WebForm1(IMultiply multiplier) { this.multiplier = multiplier; } public virtual int Multi(int a, int b) { return multiplier.Multiply(a, b); } }

then a unit test can look like this

[TestMethod] public void TestMethod1() { //Arrange int a = 5; int b = 10; int expected = 50; var mockMultiplier = new Mock<IMultiply>(); mockMultiplier.Setup(x => x.Multiply(a, b)).Returns(expected); //your web form is the system under test var webForm = new WebForm1(mockMultiplier.Object); //Act var actual = webForm.Multi(a, b); Assert.AreEqual(expected, actual); }

@lokanathdas has you issue been resolved? If this resolved you problem, mark it as the answer.

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