I am fairly new to unit testing in C# and learning to use Moq. Below is the class that I am trying to test.
class MyClass
{
SomeClass someClass;
public MyClass(SomeClass someClass)
{
this.someClass = someClass;
}
public void MyMethod(string method)
{
method = "test"
someClass.DoSomething(method);
}
}
class Someclass
{
public DoSomething(string method)
{
// do something...
}
}
Below is my TestClass:
class MyClassTest
{
[TestMethod()]
public void MyMethodTest()
{
string action="test";
Mock<SomeClass> mockSomeClass = new Mock<SomeClass>();
mockSomeClass.SetUp(a => a.DoSomething(action));
MyClass myClass = new MyClass(mockSomeClass.Object);
myClass.MyMethod(action);
mockSomeClass.Verify(v => v.DoSomething(It.IsAny<string>()));
}
}
I get the following exception:
Expected invocation on the mock at least once, but was never performed
No setups configured.
No invocations performed..
I just want to verify if the method "MyMethod" is being called or not. Am I missing something?
You're checking the wrong method. Moq requires that you Setup (and then optionally Verify) the method in the dependency class.
You should be doing something more like this:
class MyClassTest
{
[TestMethod]
public void MyMethodTest()
{
string action = "test";
Mock<SomeClass> mockSomeClass = new Mock<SomeClass>();
mockSomeClass.Setup(mock => mock.DoSomething());
MyClass myClass = new MyClass(mockSomeClass.Object);
myClass.MyMethod(action);
// Explicitly verify each expectation...
mockSomeClass.Verify(mock => mock.DoSomething(), Times.Once());
// ...or verify everything.
// mockSomeClass.VerifyAll();
}
}
In other words, you are verifying that calling MyClass#MyMethod, your class will definitely call SomeClass#DoSomething once in that process. Note that you don't need the Times argument; I was just demonstrating its value.
Source: Stackoverflow.com