[英]With Moq, how can I mock protected methods with out parameter?
For a method like: 对于像这样的方法:
protected virtual bool DoSomething(string str) { }
I usually mock it through: 我经常嘲笑它:
var mockModule = new Mock<MyClass> { CallBase = true };
mockModule.Protected().Setup<bool>("DoSomething", ItExpr.IsAny<string>()).Returns(true);
But for a method like: 但对于像这样的方法:
protected virtual bool DoSomething(out string str) { }
How can I mock it? 我怎么嘲笑它?
It can be done since moq 4.8.0-rc1 (2017-12-08). 这可以从moq 4.8.0-rc1(2017-12-08)开始。 You can use
ItExpr.Ref<string>.IsAny
for match any value for ref
or out
parameters. 您可以使用
ItExpr.Ref<string>.IsAny
来匹配ref
或out
参数的任何值。 In your case: 在你的情况下:
mockModule.Protected().Setup<bool>("DoSomething", ItExpr.Ref<string>.IsAny).Returns(true);
Full example with mocking the out parameter: 模拟out参数的完整示例:
[TestClass]
public class OutProtectedMockFixture
{
delegate void DoSomethingCallback(out string str);
[TestMethod]
public void test()
{
// Arrange
string str;
var classUnderTest = new Mock<SomeClass>();
classUnderTest.Protected().Setup<bool>("DoSomething", ItExpr.Ref<string>.IsAny)
.Callback(new DoSomethingCallback((out string stri) =>
{
stri = "test";
})).Returns(true);
// Act
var res = classUnderTest.Object.foo(out str);
// Assert
Assert.AreEqual("test", str);
Assert.IsTrue(res);
}
}
public class SomeClass
{
public bool foo(out string str)
{
return DoSomething(out str);
}
protected virtual bool DoSomething(out string str)
{
str = "boo";
return false;
}
}
It can be done by using Typemock Isolator , you can mock your non-public methods and change their out and ref parameters easily: 它可以通过使用Typemock Isolator完成 ,您可以模拟非公共方法并轻松更改其out和ref参数:
[TestMethod, Isolated]
public void test()
{
// Arrange
string str;
SomeClass classUnderTest = new SomeClass();
Isolate.NonPublic.WhenCalled(classUnderTest, "DoSomething").AssignRefOut("test").IgnoreCall();
// Act
classUnderTest.foo(out str);
// Assert
Assert.AreEqual("test", str);
}
public class SomeClass
{
public void foo(out string str)
{
DoSomething(out str);
}
protected virtual bool DoSomething(out string str)
{
str = "boo";
return true;
}
}
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