How to return object in NSubstitute with Substitute parameters

Question

I am new to NSubstitute and have previously worked with Moq. I want to call a function with any arguments and return an object that I create with any constructor args except one that I want to set.

In Moq i can write this:

new TestObject(It.IsAny<string>(), It.IsAny<bool>(), aValueIWantToControle)

In NSubstistute I tried:

var mySubstitute = Substitute.For<IMySubstitute>();

mySubstitute.DoSomething(Arg.Any<bool>(), Arg.Any<string>())
    .Returns(new TestObject(Substitute.For<string>(), Substitute.For<bool>(), aValueIWantToControle));

How can i create an object like this in NSubstitute?

score 2 · Accepted Answer · answered Dec 05 '16 at 02:36

NSubstitute doesn't have any special support for constructor arguments. I think something like the following would work for this case:

var mySubstitute = Substitute.For<IMySubstitute>();

mySubstitute.DoSomething(Arg.Any<bool>(), Arg.Any<string>())
    .Returns(new TestObject(default(string), default(bool), aValueIWantToControle));

How to return object in NSubstitute with Substitute parameters

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