[英]How to Moq Setting an Indexed property
I'm trying to use mock to verify that an index property has been set. 我正在尝试使用mock来验证是否已设置索引属性。 Here's a moq-able object with an index: 这是一个带有索引的moq-able对象:
public class Index
{
IDictionary<object ,object> _backingField
= new Dictionary<object, object>();
public virtual object this[object key]
{
get { return _backingField[key]; }
set { _backingField[key] = value; }
}
}
First, tried using Setup()
: 首先,尝试使用Setup()
:
[Test]
public void MoqUsingSetup()
{
//arrange
var index = new Mock<Index>();
index.Setup(o => o["Key"]).Verifiable();
// act
index.Object["Key"] = "Value";
//assert
index.Verify();
}
...which fails - it must be verifying against get{}
...失败了 - 必须验证get{}
So, I tried using SetupSet()
: 所以,我尝试使用SetupSet()
:
[Test]
public void MoqUsingSetupSet()
{
//arrange
var index = new Mock<Index>();
index.SetupSet(o => o["Key"]).Verifiable();
}
... which gives a runtime exception: ...它给出了运行时异常:
System.ArgumentException : Expression is not a property access: o => o["Key"]
at Moq.ExpressionExtensions.ToPropertyInfo(LambdaExpression expression)
at Moq.Mock.SetupSet(Mock mock, Expression`1 expression)
at Moq.MockExtensions.SetupSet(Mock`1 mock, Expression`1 expression)
What's the correct way to accomplish this? 完成此任务的正确方法是什么?
This should work 这应该工作
[Test]
public void MoqUsingSetup()
{
//arrange
var index = new Mock();
index.SetupSet(o => o["Key"] = "Value").Verifiable();
// act
index.Object["Key"] = "Value";
//assert
index.Verify();
}
You can just treat it like a normal property setter. 您可以像对待普通的属性设置器一样对待它。
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