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Automocking with simple types

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Software
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Software asked on 14 Nov 2012, 05:49 PM
I am trying to use automocking to test a class that looks something like this:

class X
{
public X(int code, IFoo a, IBar b, IBaz c, ...) { ... } 
}

Using automocking how do I go about getting the int into the class under test?

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Kaloyan
Telerik team
answered on 15 Nov 2012, 01:24 PM
Hello Eric,

 Thank you for contacting Telerik support.

 In order to help you further, I must object that the Automocking container of JustMock is designed to mock non elevated external dependencies(mostly Interfaces). However, we have planned the using of profiler in it for future releases. I would recommend you to check our help documentation about this feature:
 - http://www.telerik.com/help/justmock/basic-usage-automocking.html

 Noting the above, I must say that, with automocking it is not possible to pass a value type along with the external dependencies(the interfaces) into the constructor. Let`s assume we have the following code to be tested:
public interface IFoo
{
    int MyFooProp { get; set; }
}
 
public interface IBar
{
    string MyBarProp { get; set; }
}
 
public interface IBaz
{
    bool MyBazProp { get; set; }
}
 
public class X
{
    public int SampleInt { get; set; }
    public int IntegerValue { get; set; }
    public string StringValue { get; set; }
    public bool BoolValue { get; set; }
 
    public X(int code, IFoo a, IBar b, IBaz c)
    {
        this.SampleInt = code;
        this.IntegerValue = a.MyFooProp;
        this.StringValue = b.MyBarProp;
        this.BoolValue = c.MyBazProp;
    }
}

 Using the automocking feature will make the "code" variable to be passed with it`s default value which is "0" and the following test will behave as expected:  
[TestMethod]
public void TestMethodUsingAutomocking()
{
    var container = new MockingContainer<X>();
 
    container.Arrange<IFoo>((foo) => foo.MyFooProp).IgnoreInstance().Returns(123);
    container.Arrange<IBar>((foo) => foo.MyBarProp).IgnoreInstance().Returns("test");
    container.Arrange<IBaz>((foo) => foo.MyBazProp).IgnoreInstance().Returns(true);
 
    Assert.AreEqual(123, container.Instance.IntegerValue);
    Assert.AreEqual("test", container.Instance.StringValue);
    Assert.AreEqual(true, container.Instance.BoolValue);
    Assert.AreEqual(0, container.Instance.SampleInt);
}

 However, if you need to instantiate your "X" class with concrete value of the "code" variable, I would recommend you to do it the following way:
[TestMethod]
public void TestMethodWithoutAutomocking()
{
    var foo = Mock.Create<IFoo>();
    var bar = Mock.Create<IBar>();
    var baz = Mock.Create<IBaz>();
 
    Mock.Arrange(() => foo.MyFooProp).IgnoreInstance().Returns(123);
    Mock.Arrange(() => bar.MyBarProp).IgnoreInstance().Returns("test");
    Mock.Arrange(() => baz.MyBazProp).IgnoreInstance().Returns(true);
 
    X xInstance = new X(444, foo, bar, baz);
 
    Assert.AreEqual(123, xInstance.IntegerValue);
    Assert.AreEqual("test", xInstance.StringValue);
    Assert.AreEqual(true, xInstance.BoolValue);
    Assert.AreEqual(444, xInstance.SampleInt);
}
 
 I hope this answers your question. Please do not hesitate to contact us again if there is more you wish to know.

Kind regards,
Kaloyan
the Telerik team

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